1 /*
2 * Copyright (c) 1994, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.lang;
27
28 import java.lang.reflect.AnnotatedElement;
29 import java.lang.reflect.Array;
30 import java.lang.reflect.GenericArrayType;
31 import java.lang.reflect.GenericDeclaration;
32 import java.lang.reflect.Member;
33 import java.lang.reflect.Field;
34 import java.lang.reflect.Executable;
35 import java.lang.reflect.Method;
36 import java.lang.reflect.Constructor;
37 import java.lang.reflect.Modifier;
38 import java.lang.reflect.Type;
39 import java.lang.reflect.TypeVariable;
40 import java.lang.reflect.InvocationTargetException;
41 import java.lang.reflect.AnnotatedType;
42 import java.lang.ref.SoftReference;
43 import java.io.InputStream;
44 import java.io.ObjectStreamField;
45 import java.security.AccessController;
46 import java.security.PrivilegedAction;
47 import java.util.ArrayList;
48 import java.util.Arrays;
49 import java.util.Collection;
50 import java.util.HashSet;
51 import java.util.List;
52 import java.util.Set;
53 import java.util.Map;
54 import java.util.HashMap;
55 import java.util.Objects;
56 import sun.misc.Unsafe;
57 import sun.reflect.CallerSensitive;
58 import sun.reflect.ConstantPool;
59 import sun.reflect.Reflection;
60 import sun.reflect.ReflectionFactory;
61 import sun.reflect.generics.factory.CoreReflectionFactory;
62 import sun.reflect.generics.factory.GenericsFactory;
63 import sun.reflect.generics.repository.ClassRepository;
64 import sun.reflect.generics.repository.MethodRepository;
65 import sun.reflect.generics.repository.ConstructorRepository;
66 import sun.reflect.generics.scope.ClassScope;
67 import sun.security.util.SecurityConstants;
68 import java.lang.annotation.Annotation;
69 import java.lang.reflect.Proxy;
70 import sun.reflect.annotation.*;
71 import sun.reflect.misc.ReflectUtil;
72
73 /**
74 * Instances of the class {@code Class} represent classes and
75 * interfaces in a running Java application. An enum is a kind of
76 * class and an annotation is a kind of interface. Every array also
77 * belongs to a class that is reflected as a {@code Class} object
78 * that is shared by all arrays with the same element type and number
79 * of dimensions. The primitive Java types ({@code boolean},
80 * {@code byte}, {@code char}, {@code short},
81 * {@code int}, {@code long}, {@code float}, and
82 * {@code double}), and the keyword {@code void} are also
83 * represented as {@code Class} objects.
84 *
85 * <p> {@code Class} has no public constructor. Instead {@code Class}
86 * objects are constructed automatically by the Java Virtual Machine as classes
87 * are loaded and by calls to the {@code defineClass} method in the class
88 * loader.
89 *
90 * <p> The following example uses a {@code Class} object to print the
91 * class name of an object:
92 *
93 * <p> <blockquote><pre>
94 * void printClassName(Object obj) {
95 * System.out.println("The class of " + obj +
96 * " is " + obj.getClass().getName());
97 * }
98 * </pre></blockquote>
99 *
100 * <p> It is also possible to get the {@code Class} object for a named
101 * type (or for void) using a class literal. See Section 15.8.2 of
102 * <cite>The Java™ Language Specification</cite>.
103 * For example:
104 *
105 * <p> <blockquote>
106 * {@code System.out.println("The name of class Foo is: "+Foo.class.getName());}
107 * </blockquote>
108 *
109 * @param <T> the type of the class modeled by this {@code Class}
110 * object. For example, the type of {@code String.class} is {@code
111 * Class<String>}. Use {@code Class<?>} if the class being modeled is
112 * unknown.
113 *
114 * @author unascribed
115 * @see java.lang.ClassLoader#defineClass(byte[], int, int)
116 * @since JDK1.0
117 */
118 public final class Class<T> implements java.io.Serializable,
119 GenericDeclaration,
120 Type,
121 AnnotatedElement {
122 private static final int ANNOTATION= 0x00002000;
123 private static final int ENUM = 0x00004000;
124 private static final int SYNTHETIC = 0x00001000;
125
126 private static native void registerNatives();
127 static {
128 registerNatives();
129 }
130
131 /*
132 * Constructor. Only the Java Virtual Machine creates Class
133 * objects.
134 */
135 private Class() {}
136
137
138 /**
139 * Converts the object to a string. The string representation is the
140 * string "class" or "interface", followed by a space, and then by the
141 * fully qualified name of the class in the format returned by
142 * {@code getName}. If this {@code Class} object represents a
143 * primitive type, this method returns the name of the primitive type. If
144 * this {@code Class} object represents void this method returns
145 * "void".
146 *
147 * @return a string representation of this class object.
148 */
149 public String toString() {
150 return (isInterface() ? "interface " : (isPrimitive() ? "" : "class "))
151 + getName();
152 }
153
154 /**
155 * Returns a string describing this {@code Class}, including
156 * information about modifiers and type parameters.
157 *
158 * The string is formatted as a list of type modifiers, if any,
159 * followed by the kind of type (empty string for primitive types
160 * and {@code class}, {@code enum}, {@code interface}, or {@code
161 * @interface}, as appropriate), followed by the type's name,
162 * followed by an angle-bracketed comma-separated list of the
163 * type's type parameters, if any.
164 *
165 * A space is used to separate modifiers from one another and to
166 * separate any modifiers from the kind of type. The modifiers
167 * occur in canonical order. If there are no type parameters, the
168 * type parameter list is elided.
169 *
170 * <p>Note that since information about the runtime representation
171 * of a type is being generated, modifiers not present on the
172 * originating source code or illegal on the originating source
173 * code may be present.
174 *
175 * @return a string describing this {@code Class}, including
176 * information about modifiers and type parameters
177 *
178 * @since 1.8
179 */
180 public String toGenericString() {
181 if (isPrimitive()) {
182 return toString();
183 } else {
184 StringBuilder sb = new StringBuilder();
185
186 // Class modifiers are a superset of interface modifiers
187 int modifiers = getModifiers() & Modifier.classModifiers();
188 if (modifiers != 0) {
189 sb.append(Modifier.toString(modifiers));
190 sb.append(' ');
191 }
192
193 if (isAnnotation()) {
194 sb.append('@');
195 }
196 if (isInterface()) { // Note: all annotation types are interfaces
197 sb.append("interface");
198 } else {
199 if (isEnum())
200 sb.append("enum");
201 else
202 sb.append("class");
203 }
204 sb.append(' ');
205 sb.append(getName());
206
207 TypeVariable<?>[] typeparms = getTypeParameters();
208 if (typeparms.length > 0) {
209 boolean first = true;
210 sb.append('<');
211 for(TypeVariable<?> typeparm: typeparms) {
212 if (!first)
213 sb.append(',');
214 sb.append(typeparm.getTypeName());
215 first = false;
216 }
217 sb.append('>');
218 }
219
220 return sb.toString();
221 }
222 }
223
224 /**
225 * Returns the {@code Class} object associated with the class or
226 * interface with the given string name. Invoking this method is
227 * equivalent to:
228 *
229 * <blockquote>
230 * {@code Class.forName(className, true, currentLoader)}
231 * </blockquote>
232 *
233 * where {@code currentLoader} denotes the defining class loader of
234 * the current class.
235 *
236 * <p> For example, the following code fragment returns the
237 * runtime {@code Class} descriptor for the class named
238 * {@code java.lang.Thread}:
239 *
240 * <blockquote>
241 * {@code Class t = Class.forName("java.lang.Thread")}
242 * </blockquote>
243 * <p>
244 * A call to {@code forName("X")} causes the class named
245 * {@code X} to be initialized.
246 *
247 * @param className the fully qualified name of the desired class.
248 * @return the {@code Class} object for the class with the
249 * specified name.
250 * @exception LinkageError if the linkage fails
251 * @exception ExceptionInInitializerError if the initialization provoked
252 * by this method fails
253 * @exception ClassNotFoundException if the class cannot be located
254 */
255 @CallerSensitive
256 public static Class<?> forName(String className)
257 throws ClassNotFoundException {
258 return forName0(className, true,
259 ClassLoader.getClassLoader(Reflection.getCallerClass()));
260 }
261
262
263 /**
264 * Returns the {@code Class} object associated with the class or
265 * interface with the given string name, using the given class loader.
266 * Given the fully qualified name for a class or interface (in the same
267 * format returned by {@code getName}) this method attempts to
268 * locate, load, and link the class or interface. The specified class
269 * loader is used to load the class or interface. If the parameter
270 * {@code loader} is null, the class is loaded through the bootstrap
271 * class loader. The class is initialized only if the
272 * {@code initialize} parameter is {@code true} and if it has
273 * not been initialized earlier.
274 *
275 * <p> If {@code name} denotes a primitive type or void, an attempt
276 * will be made to locate a user-defined class in the unnamed package whose
277 * name is {@code name}. Therefore, this method cannot be used to
278 * obtain any of the {@code Class} objects representing primitive
279 * types or void.
280 *
281 * <p> If {@code name} denotes an array class, the component type of
282 * the array class is loaded but not initialized.
283 *
284 * <p> For example, in an instance method the expression:
285 *
286 * <blockquote>
287 * {@code Class.forName("Foo")}
288 * </blockquote>
289 *
290 * is equivalent to:
291 *
292 * <blockquote>
293 * {@code Class.forName("Foo", true, this.getClass().getClassLoader())}
294 * </blockquote>
295 *
296 * Note that this method throws errors related to loading, linking or
297 * initializing as specified in Sections 12.2, 12.3 and 12.4 of <em>The
298 * Java Language Specification</em>.
299 * Note that this method does not check whether the requested class
300 * is accessible to its caller.
301 *
302 * <p> If the {@code loader} is {@code null}, and a security
303 * manager is present, and the caller's class loader is not null, then this
304 * method calls the security manager's {@code checkPermission} method
305 * with a {@code RuntimePermission("getClassLoader")} permission to
306 * ensure it's ok to access the bootstrap class loader.
307 *
308 * @param name fully qualified name of the desired class
309 * @param initialize if {@code true} the class will be initialized.
310 * See Section 12.4 of <em>The Java Language Specification</em>.
311 * @param loader class loader from which the class must be loaded
312 * @return class object representing the desired class
313 *
314 * @exception LinkageError if the linkage fails
315 * @exception ExceptionInInitializerError if the initialization provoked
316 * by this method fails
317 * @exception ClassNotFoundException if the class cannot be located by
318 * the specified class loader
319 *
320 * @see java.lang.Class#forName(String)
321 * @see java.lang.ClassLoader
322 * @since 1.2
323 */
324 @CallerSensitive
325 public static Class<?> forName(String name, boolean initialize,
326 ClassLoader loader)
327 throws ClassNotFoundException
328 {
329 if (sun.misc.VM.isSystemDomainLoader(loader)) {
330 SecurityManager sm = System.getSecurityManager();
331 if (sm != null) {
332 ClassLoader ccl = ClassLoader.getClassLoader(Reflection.getCallerClass());
333 if (!sun.misc.VM.isSystemDomainLoader(ccl)) {
334 sm.checkPermission(
335 SecurityConstants.GET_CLASSLOADER_PERMISSION);
336 }
337 }
338 }
339 return forName0(name, initialize, loader);
340 }
341
342 /** Called after security checks have been made. */
343 private static native Class<?> forName0(String name, boolean initialize,
344 ClassLoader loader)
345 throws ClassNotFoundException;
346
347 /**
348 * Creates a new instance of the class represented by this {@code Class}
349 * object. The class is instantiated as if by a {@code new}
350 * expression with an empty argument list. The class is initialized if it
351 * has not already been initialized.
352 *
353 * <p>Note that this method propagates any exception thrown by the
354 * nullary constructor, including a checked exception. Use of
355 * this method effectively bypasses the compile-time exception
356 * checking that would otherwise be performed by the compiler.
357 * The {@link
358 * java.lang.reflect.Constructor#newInstance(java.lang.Object...)
359 * Constructor.newInstance} method avoids this problem by wrapping
360 * any exception thrown by the constructor in a (checked) {@link
361 * java.lang.reflect.InvocationTargetException}.
362 *
363 * @return a newly allocated instance of the class represented by this
364 * object.
365 * @throws IllegalAccessException if the class or its nullary
366 * constructor is not accessible.
367 * @throws InstantiationException
368 * if this {@code Class} represents an abstract class,
369 * an interface, an array class, a primitive type, or void;
370 * or if the class has no nullary constructor;
371 * or if the instantiation fails for some other reason.
372 * @throws ExceptionInInitializerError if the initialization
373 * provoked by this method fails.
374 * @throws SecurityException
375 * If a security manager, <i>s</i>, is present and
376 * the caller's class loader is not the same as or an
377 * ancestor of the class loader for the current class and
378 * invocation of {@link SecurityManager#checkPackageAccess
379 * s.checkPackageAccess()} denies access to the package
380 * of this class.
381 */
382 @CallerSensitive
383 public T newInstance()
384 throws InstantiationException, IllegalAccessException
385 {
386 if (System.getSecurityManager() != null) {
387 checkMemberAccess(Member.PUBLIC, Reflection.getCallerClass(), false);
388 }
389
390 // NOTE: the following code may not be strictly correct under
391 // the current Java memory model.
392
393 // Constructor lookup
394 if (cachedConstructor == null) {
395 if (this == Class.class) {
396 throw new IllegalAccessException(
397 "Can not call newInstance() on the Class for java.lang.Class"
398 );
399 }
400 try {
401 Class<?>[] empty = {};
402 final Constructor<T> c = getConstructor0(empty, Member.DECLARED);
403 // Disable accessibility checks on the constructor
404 // since we have to do the security check here anyway
405 // (the stack depth is wrong for the Constructor's
406 // security check to work)
407 java.security.AccessController.doPrivileged(
408 new java.security.PrivilegedAction<Void>() {
409 public Void run() {
410 c.setAccessible(true);
411 return null;
412 }
413 });
414 cachedConstructor = c;
415 } catch (NoSuchMethodException e) {
416 throw (InstantiationException)
417 new InstantiationException(getName()).initCause(e);
418 }
419 }
420 Constructor<T> tmpConstructor = cachedConstructor;
421 // Security check (same as in java.lang.reflect.Constructor)
422 int modifiers = tmpConstructor.getModifiers();
423 if (!Reflection.quickCheckMemberAccess(this, modifiers)) {
424 Class<?> caller = Reflection.getCallerClass();
425 if (newInstanceCallerCache != caller) {
426 Reflection.ensureMemberAccess(caller, this, null, modifiers);
427 newInstanceCallerCache = caller;
428 }
429 }
430 // Run constructor
431 try {
432 return tmpConstructor.newInstance((Object[])null);
433 } catch (InvocationTargetException e) {
434 Unsafe.getUnsafe().throwException(e.getTargetException());
435 // Not reached
436 return null;
437 }
438 }
439 private volatile transient Constructor<T> cachedConstructor;
440 private volatile transient Class<?> newInstanceCallerCache;
441
442
443 /**
444 * Determines if the specified {@code Object} is assignment-compatible
445 * with the object represented by this {@code Class}. This method is
446 * the dynamic equivalent of the Java language {@code instanceof}
447 * operator. The method returns {@code true} if the specified
448 * {@code Object} argument is non-null and can be cast to the
449 * reference type represented by this {@code Class} object without
450 * raising a {@code ClassCastException.} It returns {@code false}
451 * otherwise.
452 *
453 * <p> Specifically, if this {@code Class} object represents a
454 * declared class, this method returns {@code true} if the specified
455 * {@code Object} argument is an instance of the represented class (or
456 * of any of its subclasses); it returns {@code false} otherwise. If
457 * this {@code Class} object represents an array class, this method
458 * returns {@code true} if the specified {@code Object} argument
459 * can be converted to an object of the array class by an identity
460 * conversion or by a widening reference conversion; it returns
461 * {@code false} otherwise. If this {@code Class} object
462 * represents an interface, this method returns {@code true} if the
463 * class or any superclass of the specified {@code Object} argument
464 * implements this interface; it returns {@code false} otherwise. If
465 * this {@code Class} object represents a primitive type, this method
466 * returns {@code false}.
467 *
468 * @param obj the object to check
469 * @return true if {@code obj} is an instance of this class
470 *
471 * @since JDK1.1
472 */
473 public native boolean isInstance(Object obj);
474
475
476 /**
477 * Determines if the class or interface represented by this
478 * {@code Class} object is either the same as, or is a superclass or
479 * superinterface of, the class or interface represented by the specified
480 * {@code Class} parameter. It returns {@code true} if so;
481 * otherwise it returns {@code false}. If this {@code Class}
482 * object represents a primitive type, this method returns
483 * {@code true} if the specified {@code Class} parameter is
484 * exactly this {@code Class} object; otherwise it returns
485 * {@code false}.
486 *
487 * <p> Specifically, this method tests whether the type represented by the
488 * specified {@code Class} parameter can be converted to the type
489 * represented by this {@code Class} object via an identity conversion
490 * or via a widening reference conversion. See <em>The Java Language
491 * Specification</em>, sections 5.1.1 and 5.1.4 , for details.
492 *
493 * @param cls the {@code Class} object to be checked
494 * @return the {@code boolean} value indicating whether objects of the
495 * type {@code cls} can be assigned to objects of this class
496 * @exception NullPointerException if the specified Class parameter is
497 * null.
498 * @since JDK1.1
499 */
500 public native boolean isAssignableFrom(Class<?> cls);
501
502
503 /**
504 * Determines if the specified {@code Class} object represents an
505 * interface type.
506 *
507 * @return {@code true} if this object represents an interface;
508 * {@code false} otherwise.
509 */
510 public native boolean isInterface();
511
512
513 /**
514 * Determines if this {@code Class} object represents an array class.
515 *
516 * @return {@code true} if this object represents an array class;
517 * {@code false} otherwise.
518 * @since JDK1.1
519 */
520 public native boolean isArray();
521
522
523 /**
524 * Determines if the specified {@code Class} object represents a
525 * primitive type.
526 *
527 * <p> There are nine predefined {@code Class} objects to represent
528 * the eight primitive types and void. These are created by the Java
529 * Virtual Machine, and have the same names as the primitive types that
530 * they represent, namely {@code boolean}, {@code byte},
531 * {@code char}, {@code short}, {@code int},
532 * {@code long}, {@code float}, and {@code double}.
533 *
534 * <p> These objects may only be accessed via the following public static
535 * final variables, and are the only {@code Class} objects for which
536 * this method returns {@code true}.
537 *
538 * @return true if and only if this class represents a primitive type
539 *
540 * @see java.lang.Boolean#TYPE
541 * @see java.lang.Character#TYPE
542 * @see java.lang.Byte#TYPE
543 * @see java.lang.Short#TYPE
544 * @see java.lang.Integer#TYPE
545 * @see java.lang.Long#TYPE
546 * @see java.lang.Float#TYPE
547 * @see java.lang.Double#TYPE
548 * @see java.lang.Void#TYPE
549 * @since JDK1.1
550 */
551 public native boolean isPrimitive();
552
553 /**
554 * Returns true if this {@code Class} object represents an annotation
555 * type. Note that if this method returns true, {@link #isInterface()}
556 * would also return true, as all annotation types are also interfaces.
557 *
558 * @return {@code true} if this class object represents an annotation
559 * type; {@code false} otherwise
560 * @since 1.5
561 */
562 public boolean isAnnotation() {
563 return (getModifiers() & ANNOTATION) != 0;
564 }
565
566 /**
567 * Returns {@code true} if this class is a synthetic class;
568 * returns {@code false} otherwise.
569 * @return {@code true} if and only if this class is a synthetic class as
570 * defined by the Java Language Specification.
571 * @jls 13.1 The Form of a Binary
572 * @since 1.5
573 */
574 public boolean isSynthetic() {
575 return (getModifiers() & SYNTHETIC) != 0;
576 }
577
578 /**
579 * Returns the name of the entity (class, interface, array class,
580 * primitive type, or void) represented by this {@code Class} object,
581 * as a {@code String}.
582 *
583 * <p> If this class object represents a reference type that is not an
584 * array type then the binary name of the class is returned, as specified
585 * by
586 * <cite>The Java™ Language Specification</cite>.
587 *
588 * <p> If this class object represents a primitive type or void, then the
589 * name returned is a {@code String} equal to the Java language
590 * keyword corresponding to the primitive type or void.
591 *
592 * <p> If this class object represents a class of arrays, then the internal
593 * form of the name consists of the name of the element type preceded by
594 * one or more '{@code [}' characters representing the depth of the array
595 * nesting. The encoding of element type names is as follows:
596 *
597 * <blockquote><table summary="Element types and encodings">
598 * <tr><th> Element Type <th> <th> Encoding
599 * <tr><td> boolean <td> <td align=center> Z
600 * <tr><td> byte <td> <td align=center> B
601 * <tr><td> char <td> <td align=center> C
602 * <tr><td> class or interface
603 * <td> <td align=center> L<i>classname</i>;
604 * <tr><td> double <td> <td align=center> D
605 * <tr><td> float <td> <td align=center> F
606 * <tr><td> int <td> <td align=center> I
607 * <tr><td> long <td> <td align=center> J
608 * <tr><td> short <td> <td align=center> S
609 * </table></blockquote>
610 *
611 * <p> The class or interface name <i>classname</i> is the binary name of
612 * the class specified above.
613 *
614 * <p> Examples:
615 * <blockquote><pre>
616 * String.class.getName()
617 * returns "java.lang.String"
618 * byte.class.getName()
619 * returns "byte"
620 * (new Object[3]).getClass().getName()
621 * returns "[Ljava.lang.Object;"
622 * (new int[3][4][5][6][7][8][9]).getClass().getName()
623 * returns "[[[[[[[I"
624 * </pre></blockquote>
625 *
626 * @return the name of the class or interface
627 * represented by this object.
628 */
629 public String getName() {
630 String name = this.name;
631 if (name == null)
632 this.name = name = getName0();
633 return name;
634 }
635
636 // cache the name to reduce the number of calls into the VM
637 private transient String name;
638 private native String getName0();
639
640 /**
641 * Returns the class loader for the class. Some implementations may use
642 * null to represent the bootstrap class loader. This method will return
643 * null in such implementations if this class was loaded by the bootstrap
644 * class loader.
645 *
646 * <p> If a security manager is present, and the caller's class loader is
647 * not null and the caller's class loader is not the same as or an ancestor of
648 * the class loader for the class whose class loader is requested, then
649 * this method calls the security manager's {@code checkPermission}
650 * method with a {@code RuntimePermission("getClassLoader")}
651 * permission to ensure it's ok to access the class loader for the class.
652 *
653 * <p>If this object
654 * represents a primitive type or void, null is returned.
655 *
656 * @return the class loader that loaded the class or interface
657 * represented by this object.
658 * @throws SecurityException
659 * if a security manager exists and its
660 * {@code checkPermission} method denies
661 * access to the class loader for the class.
662 * @see java.lang.ClassLoader
663 * @see SecurityManager#checkPermission
664 * @see java.lang.RuntimePermission
665 */
666 @CallerSensitive
667 public ClassLoader getClassLoader() {
668 ClassLoader cl = getClassLoader0();
669 if (cl == null)
670 return null;
671 SecurityManager sm = System.getSecurityManager();
672 if (sm != null) {
673 ClassLoader.checkClassLoaderPermission(cl, Reflection.getCallerClass());
674 }
675 return cl;
676 }
677
678 // Package-private to allow ClassLoader access
679 native ClassLoader getClassLoader0();
680
681
682 /**
683 * Returns an array of {@code TypeVariable} objects that represent the
684 * type variables declared by the generic declaration represented by this
685 * {@code GenericDeclaration} object, in declaration order. Returns an
686 * array of length 0 if the underlying generic declaration declares no type
687 * variables.
688 *
689 * @return an array of {@code TypeVariable} objects that represent
690 * the type variables declared by this generic declaration
691 * @throws java.lang.reflect.GenericSignatureFormatError if the generic
692 * signature of this generic declaration does not conform to
693 * the format specified in
694 * <cite>The Java™ Virtual Machine Specification</cite>
695 * @since 1.5
696 */
697 @SuppressWarnings("unchecked")
698 public TypeVariable<Class<T>>[] getTypeParameters() {
699 ClassRepository info = getGenericInfo();
700 if (info != null)
701 return (TypeVariable<Class<T>>[])info.getTypeParameters();
702 else
703 return (TypeVariable<Class<T>>[])new TypeVariable<?>[0];
704 }
705
706
707 /**
708 * Returns the {@code Class} representing the superclass of the entity
709 * (class, interface, primitive type or void) represented by this
710 * {@code Class}. If this {@code Class} represents either the
711 * {@code Object} class, an interface, a primitive type, or void, then
712 * null is returned. If this object represents an array class then the
713 * {@code Class} object representing the {@code Object} class is
714 * returned.
715 *
716 * @return the superclass of the class represented by this object.
717 */
718 public native Class<? super T> getSuperclass();
719
720
721 /**
722 * Returns the {@code Type} representing the direct superclass of
723 * the entity (class, interface, primitive type or void) represented by
724 * this {@code Class}.
725 *
726 * <p>If the superclass is a parameterized type, the {@code Type}
727 * object returned must accurately reflect the actual type
728 * parameters used in the source code. The parameterized type
729 * representing the superclass is created if it had not been
730 * created before. See the declaration of {@link
731 * java.lang.reflect.ParameterizedType ParameterizedType} for the
732 * semantics of the creation process for parameterized types. If
733 * this {@code Class} represents either the {@code Object}
734 * class, an interface, a primitive type, or void, then null is
735 * returned. If this object represents an array class then the
736 * {@code Class} object representing the {@code Object} class is
737 * returned.
738 *
739 * @throws java.lang.reflect.GenericSignatureFormatError if the generic
740 * class signature does not conform to the format specified in
741 * <cite>The Java™ Virtual Machine Specification</cite>
742 * @throws TypeNotPresentException if the generic superclass
743 * refers to a non-existent type declaration
744 * @throws java.lang.reflect.MalformedParameterizedTypeException if the
745 * generic superclass refers to a parameterized type that cannot be
746 * instantiated for any reason
747 * @return the superclass of the class represented by this object
748 * @since 1.5
749 */
750 public Type getGenericSuperclass() {
751 ClassRepository info = getGenericInfo();
752 if (info == null) {
753 return getSuperclass();
754 }
755
756 // Historical irregularity:
757 // Generic signature marks interfaces with superclass = Object
758 // but this API returns null for interfaces
759 if (isInterface()) {
760 return null;
761 }
762
763 return info.getSuperclass();
764 }
765
766 /**
767 * Gets the package for this class. The class loader of this class is used
768 * to find the package. If the class was loaded by the bootstrap class
769 * loader the set of packages loaded from CLASSPATH is searched to find the
770 * package of the class. Null is returned if no package object was created
771 * by the class loader of this class.
772 *
773 * <p> Packages have attributes for versions and specifications only if the
774 * information was defined in the manifests that accompany the classes, and
775 * if the class loader created the package instance with the attributes
776 * from the manifest.
777 *
778 * @return the package of the class, or null if no package
779 * information is available from the archive or codebase.
780 */
781 public Package getPackage() {
782 return Package.getPackage(this);
783 }
784
785
786 /**
787 * Determines the interfaces implemented by the class or interface
788 * represented by this object.
789 *
790 * <p> If this object represents a class, the return value is an array
791 * containing objects representing all interfaces implemented by the
792 * class. The order of the interface objects in the array corresponds to
793 * the order of the interface names in the {@code implements} clause
794 * of the declaration of the class represented by this object. For
795 * example, given the declaration:
796 * <blockquote>
797 * {@code class Shimmer implements FloorWax, DessertTopping { ... }}
798 * </blockquote>
799 * suppose the value of {@code s} is an instance of
800 * {@code Shimmer}; the value of the expression:
801 * <blockquote>
802 * {@code s.getClass().getInterfaces()[0]}
803 * </blockquote>
804 * is the {@code Class} object that represents interface
805 * {@code FloorWax}; and the value of:
806 * <blockquote>
807 * {@code s.getClass().getInterfaces()[1]}
808 * </blockquote>
809 * is the {@code Class} object that represents interface
810 * {@code DessertTopping}.
811 *
812 * <p> If this object represents an interface, the array contains objects
813 * representing all interfaces extended by the interface. The order of the
814 * interface objects in the array corresponds to the order of the interface
815 * names in the {@code extends} clause of the declaration of the
816 * interface represented by this object.
817 *
818 * <p> If this object represents a class or interface that implements no
819 * interfaces, the method returns an array of length 0.
820 *
821 * <p> If this object represents a primitive type or void, the method
822 * returns an array of length 0.
823 *
824 * @return an array of interfaces implemented by this class.
825 */
826 public Class<?>[] getInterfaces() {
827 ReflectionData<T> rd = reflectionData();
828 if (rd == null) {
829 // no cloning required
830 return getInterfaces0();
831 } else {
832 Class<?>[] interfaces = rd.interfaces;
833 if (interfaces == null) {
834 interfaces = getInterfaces0();
835 rd.interfaces = interfaces;
836 }
837 // defensively copy before handing over to user code
838 return interfaces.clone();
839 }
840 }
841
842 private native Class<?>[] getInterfaces0();
843
844 /**
845 * Returns the {@code Type}s representing the interfaces
846 * directly implemented by the class or interface represented by
847 * this object.
848 *
849 * <p>If a superinterface is a parameterized type, the
850 * {@code Type} object returned for it must accurately reflect
851 * the actual type parameters used in the source code. The
852 * parameterized type representing each superinterface is created
853 * if it had not been created before. See the declaration of
854 * {@link java.lang.reflect.ParameterizedType ParameterizedType}
855 * for the semantics of the creation process for parameterized
856 * types.
857 *
858 * <p> If this object represents a class, the return value is an
859 * array containing objects representing all interfaces
860 * implemented by the class. The order of the interface objects in
861 * the array corresponds to the order of the interface names in
862 * the {@code implements} clause of the declaration of the class
863 * represented by this object. In the case of an array class, the
864 * interfaces {@code Cloneable} and {@code Serializable} are
865 * returned in that order.
866 *
867 * <p>If this object represents an interface, the array contains
868 * objects representing all interfaces directly extended by the
869 * interface. The order of the interface objects in the array
870 * corresponds to the order of the interface names in the
871 * {@code extends} clause of the declaration of the interface
872 * represented by this object.
873 *
874 * <p>If this object represents a class or interface that
875 * implements no interfaces, the method returns an array of length
876 * 0.
877 *
878 * <p>If this object represents a primitive type or void, the
879 * method returns an array of length 0.
880 *
881 * @throws java.lang.reflect.GenericSignatureFormatError
882 * if the generic class signature does not conform to the format
883 * specified in
884 * <cite>The Java™ Virtual Machine Specification</cite>
885 * @throws TypeNotPresentException if any of the generic
886 * superinterfaces refers to a non-existent type declaration
887 * @throws java.lang.reflect.MalformedParameterizedTypeException
888 * if any of the generic superinterfaces refer to a parameterized
889 * type that cannot be instantiated for any reason
890 * @return an array of interfaces implemented by this class
891 * @since 1.5
892 */
893 public Type[] getGenericInterfaces() {
894 ClassRepository info = getGenericInfo();
895 return (info == null) ? getInterfaces() : info.getSuperInterfaces();
896 }
897
898
899 /**
900 * Returns the {@code Class} representing the component type of an
901 * array. If this class does not represent an array class this method
902 * returns null.
903 *
904 * @return the {@code Class} representing the component type of this
905 * class if this class is an array
906 * @see java.lang.reflect.Array
907 * @since JDK1.1
908 */
909 public native Class<?> getComponentType();
910
911
912 /**
913 * Returns the Java language modifiers for this class or interface, encoded
914 * in an integer. The modifiers consist of the Java Virtual Machine's
915 * constants for {@code public}, {@code protected},
916 * {@code private}, {@code final}, {@code static},
917 * {@code abstract} and {@code interface}; they should be decoded
918 * using the methods of class {@code Modifier}.
919 *
920 * <p> If the underlying class is an array class, then its
921 * {@code public}, {@code private} and {@code protected}
922 * modifiers are the same as those of its component type. If this
923 * {@code Class} represents a primitive type or void, its
924 * {@code public} modifier is always {@code true}, and its
925 * {@code protected} and {@code private} modifiers are always
926 * {@code false}. If this object represents an array class, a
927 * primitive type or void, then its {@code final} modifier is always
928 * {@code true} and its interface modifier is always
929 * {@code false}. The values of its other modifiers are not determined
930 * by this specification.
931 *
932 * <p> The modifier encodings are defined in <em>The Java Virtual Machine
933 * Specification</em>, table 4.1.
934 *
935 * @return the {@code int} representing the modifiers for this class
936 * @see java.lang.reflect.Modifier
937 * @since JDK1.1
938 */
939 public native int getModifiers();
940
941
942 /**
943 * Gets the signers of this class.
944 *
945 * @return the signers of this class, or null if there are no signers. In
946 * particular, this method returns null if this object represents
947 * a primitive type or void.
948 * @since JDK1.1
949 */
950 public native Object[] getSigners();
951
952
953 /**
954 * Set the signers of this class.
955 */
956 native void setSigners(Object[] signers);
957
958
959 /**
960 * If this {@code Class} object represents a local or anonymous
961 * class within a method, returns a {@link
962 * java.lang.reflect.Method Method} object representing the
963 * immediately enclosing method of the underlying class. Returns
964 * {@code null} otherwise.
965 *
966 * In particular, this method returns {@code null} if the underlying
967 * class is a local or anonymous class immediately enclosed by a type
968 * declaration, instance initializer or static initializer.
969 *
970 * @return the immediately enclosing method of the underlying class, if
971 * that class is a local or anonymous class; otherwise {@code null}.
972 *
973 * @throws SecurityException
974 * If a security manager, <i>s</i>, is present and any of the
975 * following conditions is met:
976 *
977 * <ul>
978 *
979 * <li> the caller's class loader is not the same as the
980 * class loader of the enclosing class and invocation of
981 * {@link SecurityManager#checkPermission
982 * s.checkPermission} method with
983 * {@code RuntimePermission("accessDeclaredMembers")}
984 * denies access to the methods within the enclosing class
985 *
986 * <li> the caller's class loader is not the same as or an
987 * ancestor of the class loader for the enclosing class and
988 * invocation of {@link SecurityManager#checkPackageAccess
989 * s.checkPackageAccess()} denies access to the package
990 * of the enclosing class
991 *
992 * </ul>
993 * @since 1.5
994 */
995 @CallerSensitive
996 public Method getEnclosingMethod() throws SecurityException {
997 EnclosingMethodInfo enclosingInfo = getEnclosingMethodInfo();
998
999 if (enclosingInfo == null)
1000 return null;
1001 else {
1002 if (!enclosingInfo.isMethod())
1003 return null;
1004
1005 MethodRepository typeInfo = MethodRepository.make(enclosingInfo.getDescriptor(),
1006 getFactory());
1007 Class<?> returnType = toClass(typeInfo.getReturnType());
1008 Type [] parameterTypes = typeInfo.getParameterTypes();
1009 Class<?>[] parameterClasses = new Class<?>[parameterTypes.length];
1010
1011 // Convert Types to Classes; returned types *should*
1012 // be class objects since the methodDescriptor's used
1013 // don't have generics information
1014 for(int i = 0; i < parameterClasses.length; i++)
1015 parameterClasses[i] = toClass(parameterTypes[i]);
1016
1017 // Perform access check
1018 Class<?> enclosingCandidate = enclosingInfo.getEnclosingClass();
1019 if (System.getSecurityManager() != null) {
1020 enclosingCandidate.checkMemberAccess(Member.DECLARED,
1021 Reflection.getCallerClass(), true);
1022 }
1023 /*
1024 * Loop over all declared methods; match method name,
1025 * number of and type of parameters, *and* return
1026 * type. Matching return type is also necessary
1027 * because of covariant returns, etc.
1028 */
1029 for(Method m: enclosingCandidate.getDeclaredMethods()) {
1030 if (m.getName().equals(enclosingInfo.getName()) ) {
1031 Class<?>[] candidateParamClasses = m.getParameterTypes();
1032 if (candidateParamClasses.length == parameterClasses.length) {
1033 boolean matches = true;
1034 for(int i = 0; i < candidateParamClasses.length; i++) {
1035 if (!candidateParamClasses[i].equals(parameterClasses[i])) {
1036 matches = false;
1037 break;
1038 }
1039 }
1040
1041 if (matches) { // finally, check return type
1042 if (m.getReturnType().equals(returnType) )
1043 return m;
1044 }
1045 }
1046 }
1047 }
1048
1049 throw new InternalError("Enclosing method not found");
1050 }
1051 }
1052
1053 private native Object[] getEnclosingMethod0();
1054
1055 private EnclosingMethodInfo getEnclosingMethodInfo() {
1056 Object[] enclosingInfo = getEnclosingMethod0();
1057 if (enclosingInfo == null)
1058 return null;
1059 else {
1060 return new EnclosingMethodInfo(enclosingInfo);
1061 }
1062 }
1063
1064 private final static class EnclosingMethodInfo {
1065 private Class<?> enclosingClass;
1066 private String name;
1067 private String descriptor;
1068
1069 private EnclosingMethodInfo(Object[] enclosingInfo) {
1070 if (enclosingInfo.length != 3)
1071 throw new InternalError("Malformed enclosing method information");
1072 try {
1073 // The array is expected to have three elements:
1074
1075 // the immediately enclosing class
1076 enclosingClass = (Class<?>) enclosingInfo[0];
1077 assert(enclosingClass != null);
1078
1079 // the immediately enclosing method or constructor's
1080 // name (can be null).
1081 name = (String) enclosingInfo[1];
1082
1083 // the immediately enclosing method or constructor's
1084 // descriptor (null iff name is).
1085 descriptor = (String) enclosingInfo[2];
1086 assert((name != null && descriptor != null) || name == descriptor);
1087 } catch (ClassCastException cce) {
1088 throw new InternalError("Invalid type in enclosing method information", cce);
1089 }
1090 }
1091
1092 boolean isPartial() {
1093 return enclosingClass == null || name == null || descriptor == null;
1094 }
1095
1096 boolean isConstructor() { return !isPartial() && "<init>".equals(name); }
1097
1098 boolean isMethod() { return !isPartial() && !isConstructor() && !"<clinit>".equals(name); }
1099
1100 Class<?> getEnclosingClass() { return enclosingClass; }
1101
1102 String getName() { return name; }
1103
1104 String getDescriptor() { return descriptor; }
1105
1106 }
1107
1108 private static Class<?> toClass(Type o) {
1109 if (o instanceof GenericArrayType)
1110 return Array.newInstance(toClass(((GenericArrayType)o).getGenericComponentType()),
1111 0)
1112 .getClass();
1113 return (Class<?>)o;
1114 }
1115
1116 /**
1117 * If this {@code Class} object represents a local or anonymous
1118 * class within a constructor, returns a {@link
1119 * java.lang.reflect.Constructor Constructor} object representing
1120 * the immediately enclosing constructor of the underlying
1121 * class. Returns {@code null} otherwise. In particular, this
1122 * method returns {@code null} if the underlying class is a local
1123 * or anonymous class immediately enclosed by a type declaration,
1124 * instance initializer or static initializer.
1125 *
1126 * @return the immediately enclosing constructor of the underlying class, if
1127 * that class is a local or anonymous class; otherwise {@code null}.
1128 * @throws SecurityException
1129 * If a security manager, <i>s</i>, is present and any of the
1130 * following conditions is met:
1131 *
1132 * <ul>
1133 *
1134 * <li> the caller's class loader is not the same as the
1135 * class loader of the enclosing class and invocation of
1136 * {@link SecurityManager#checkPermission
1137 * s.checkPermission} method with
1138 * {@code RuntimePermission("accessDeclaredMembers")}
1139 * denies access to the constructors within the enclosing class
1140 *
1141 * <li> the caller's class loader is not the same as or an
1142 * ancestor of the class loader for the enclosing class and
1143 * invocation of {@link SecurityManager#checkPackageAccess
1144 * s.checkPackageAccess()} denies access to the package
1145 * of the enclosing class
1146 *
1147 * </ul>
1148 * @since 1.5
1149 */
1150 @CallerSensitive
1151 public Constructor<?> getEnclosingConstructor() throws SecurityException {
1152 EnclosingMethodInfo enclosingInfo = getEnclosingMethodInfo();
1153
1154 if (enclosingInfo == null)
1155 return null;
1156 else {
1157 if (!enclosingInfo.isConstructor())
1158 return null;
1159
1160 ConstructorRepository typeInfo = ConstructorRepository.make(enclosingInfo.getDescriptor(),
1161 getFactory());
1162 Type [] parameterTypes = typeInfo.getParameterTypes();
1163 Class<?>[] parameterClasses = new Class<?>[parameterTypes.length];
1164
1165 // Convert Types to Classes; returned types *should*
1166 // be class objects since the methodDescriptor's used
1167 // don't have generics information
1168 for(int i = 0; i < parameterClasses.length; i++)
1169 parameterClasses[i] = toClass(parameterTypes[i]);
1170
1171 // Perform access check
1172 Class<?> enclosingCandidate = enclosingInfo.getEnclosingClass();
1173 if (System.getSecurityManager() != null) {
1174 enclosingCandidate.checkMemberAccess(Member.DECLARED,
1175 Reflection.getCallerClass(), true);
1176 }
1177 /*
1178 * Loop over all declared constructors; match number
1179 * of and type of parameters.
1180 */
1181 for(Constructor<?> c: enclosingCandidate.getDeclaredConstructors()) {
1182 Class<?>[] candidateParamClasses = c.getParameterTypes();
1183 if (candidateParamClasses.length == parameterClasses.length) {
1184 boolean matches = true;
1185 for(int i = 0; i < candidateParamClasses.length; i++) {
1186 if (!candidateParamClasses[i].equals(parameterClasses[i])) {
1187 matches = false;
1188 break;
1189 }
1190 }
1191
1192 if (matches)
1193 return c;
1194 }
1195 }
1196
1197 throw new InternalError("Enclosing constructor not found");
1198 }
1199 }
1200
1201
1202 /**
1203 * If the class or interface represented by this {@code Class} object
1204 * is a member of another class, returns the {@code Class} object
1205 * representing the class in which it was declared. This method returns
1206 * null if this class or interface is not a member of any other class. If
1207 * this {@code Class} object represents an array class, a primitive
1208 * type, or void,then this method returns null.
1209 *
1210 * @return the declaring class for this class
1211 * @since JDK1.1
1212 */
1213 public native Class<?> getDeclaringClass();
1214
1215
1216 /**
1217 * Returns the immediately enclosing class of the underlying
1218 * class. If the underlying class is a top level class this
1219 * method returns {@code null}.
1220 * @return the immediately enclosing class of the underlying class
1221 * @exception SecurityException
1222 * If a security manager, <i>s</i>, is present and the caller's
1223 * class loader is not the same as or an ancestor of the class
1224 * loader for the enclosing class and invocation of {@link
1225 * SecurityManager#checkPackageAccess s.checkPackageAccess()}
1226 * denies access to the package of the enclosing class
1227 * @since 1.5
1228 */
1229 @CallerSensitive
1230 public Class<?> getEnclosingClass() throws SecurityException {
1231 // There are five kinds of classes (or interfaces):
1232 // a) Top level classes
1233 // b) Nested classes (static member classes)
1234 // c) Inner classes (non-static member classes)
1235 // d) Local classes (named classes declared within a method)
1236 // e) Anonymous classes
1237
1238
1239 // JVM Spec 4.8.6: A class must have an EnclosingMethod
1240 // attribute if and only if it is a local class or an
1241 // anonymous class.
1242 EnclosingMethodInfo enclosingInfo = getEnclosingMethodInfo();
1243 Class<?> enclosingCandidate;
1244
1245 if (enclosingInfo == null) {
1246 // This is a top level or a nested class or an inner class (a, b, or c)
1247 enclosingCandidate = getDeclaringClass();
1248 } else {
1249 Class<?> enclosingClass = enclosingInfo.getEnclosingClass();
1250 // This is a local class or an anonymous class (d or e)
1251 if (enclosingClass == this || enclosingClass == null)
1252 throw new InternalError("Malformed enclosing method information");
1253 else
1254 enclosingCandidate = enclosingClass;
1255 }
1256
1257 if (enclosingCandidate != null)
1258 enclosingCandidate.checkPackageAccess(
1259 ClassLoader.getClassLoader(Reflection.getCallerClass()), true);
1260 return enclosingCandidate;
1261 }
1262
1263 /**
1264 * Returns the simple name of the underlying class as given in the
1265 * source code. Returns an empty string if the underlying class is
1266 * anonymous.
1267 *
1268 * <p>The simple name of an array is the simple name of the
1269 * component type with "[]" appended. In particular the simple
1270 * name of an array whose component type is anonymous is "[]".
1271 *
1272 * @return the simple name of the underlying class
1273 * @since 1.5
1274 */
1275 public String getSimpleName() {
1276 if (isArray())
1277 return getComponentType().getSimpleName()+"[]";
1278
1279 String simpleName = getSimpleBinaryName();
1280 if (simpleName == null) { // top level class
1281 simpleName = getName();
1282 return simpleName.substring(simpleName.lastIndexOf(".")+1); // strip the package name
1283 }
1284 // According to JLS3 "Binary Compatibility" (13.1) the binary
1285 // name of non-package classes (not top level) is the binary
1286 // name of the immediately enclosing class followed by a '$' followed by:
1287 // (for nested and inner classes): the simple name.
1288 // (for local classes): 1 or more digits followed by the simple name.
1289 // (for anonymous classes): 1 or more digits.
1290
1291 // Since getSimpleBinaryName() will strip the binary name of
1292 // the immediatly enclosing class, we are now looking at a
1293 // string that matches the regular expression "\$[0-9]*"
1294 // followed by a simple name (considering the simple of an
1295 // anonymous class to be the empty string).
1296
1297 // Remove leading "\$[0-9]*" from the name
1298 int length = simpleName.length();
1299 if (length < 1 || simpleName.charAt(0) != '$')
1300 throw new InternalError("Malformed class name");
1301 int index = 1;
1302 while (index < length && isAsciiDigit(simpleName.charAt(index)))
1303 index++;
1304 // Eventually, this is the empty string iff this is an anonymous class
1305 return simpleName.substring(index);
1306 }
1307
1308 /**
1309 * Return an informative string for the name of this type.
1310 *
1311 * @return an informative string for the name of this type
1312 * @since 1.8
1313 */
1314 public String getTypeName() {
1315 if (isArray()) {
1316 try {
1317 Class<?> cl = this;
1318 int dimensions = 0;
1319 while (cl.isArray()) {
1320 dimensions++;
1321 cl = cl.getComponentType();
1322 }
1323 StringBuilder sb = new StringBuilder();
1324 sb.append(cl.getName());
1325 for (int i = 0; i < dimensions; i++) {
1326 sb.append("[]");
1327 }
1328 return sb.toString();
1329 } catch (Throwable e) { /*FALLTHRU*/ }
1330 }
1331 return getName();
1332 }
1333
1334 /**
1335 * Character.isDigit answers {@code true} to some non-ascii
1336 * digits. This one does not.
1337 */
1338 private static boolean isAsciiDigit(char c) {
1339 return '0' <= c && c <= '9';
1340 }
1341
1342 /**
1343 * Returns the canonical name of the underlying class as
1344 * defined by the Java Language Specification. Returns null if
1345 * the underlying class does not have a canonical name (i.e., if
1346 * it is a local or anonymous class or an array whose component
1347 * type does not have a canonical name).
1348 * @return the canonical name of the underlying class if it exists, and
1349 * {@code null} otherwise.
1350 * @since 1.5
1351 */
1352 public String getCanonicalName() {
1353 if (isArray()) {
1354 String canonicalName = getComponentType().getCanonicalName();
1355 if (canonicalName != null)
1356 return canonicalName + "[]";
1357 else
1358 return null;
1359 }
1360 if (isLocalOrAnonymousClass())
1361 return null;
1362 Class<?> enclosingClass = getEnclosingClass();
1363 if (enclosingClass == null) { // top level class
1364 return getName();
1365 } else {
1366 String enclosingName = enclosingClass.getCanonicalName();
1367 if (enclosingName == null)
1368 return null;
1369 return enclosingName + "." + getSimpleName();
1370 }
1371 }
1372
1373 /**
1374 * Returns {@code true} if and only if the underlying class
1375 * is an anonymous class.
1376 *
1377 * @return {@code true} if and only if this class is an anonymous class.
1378 * @since 1.5
1379 */
1380 public boolean isAnonymousClass() {
1381 return "".equals(getSimpleName());
1382 }
1383
1384 /**
1385 * Returns {@code true} if and only if the underlying class
1386 * is a local class.
1387 *
1388 * @return {@code true} if and only if this class is a local class.
1389 * @since 1.5
1390 */
1391 public boolean isLocalClass() {
1392 return isLocalOrAnonymousClass() && !isAnonymousClass();
1393 }
1394
1395 /**
1396 * Returns {@code true} if and only if the underlying class
1397 * is a member class.
1398 *
1399 * @return {@code true} if and only if this class is a member class.
1400 * @since 1.5
1401 */
1402 public boolean isMemberClass() {
1403 return getSimpleBinaryName() != null && !isLocalOrAnonymousClass();
1404 }
1405
1406 /**
1407 * Returns the "simple binary name" of the underlying class, i.e.,
1408 * the binary name without the leading enclosing class name.
1409 * Returns {@code null} if the underlying class is a top level
1410 * class.
1411 */
1412 private String getSimpleBinaryName() {
1413 Class<?> enclosingClass = getEnclosingClass();
1414 if (enclosingClass == null) // top level class
1415 return null;
1416 // Otherwise, strip the enclosing class' name
1417 try {
1418 return getName().substring(enclosingClass.getName().length());
1419 } catch (IndexOutOfBoundsException ex) {
1420 throw new InternalError("Malformed class name", ex);
1421 }
1422 }
1423
1424 /**
1425 * Returns {@code true} if this is a local class or an anonymous
1426 * class. Returns {@code false} otherwise.
1427 */
1428 private boolean isLocalOrAnonymousClass() {
1429 // JVM Spec 4.8.6: A class must have an EnclosingMethod
1430 // attribute if and only if it is a local class or an
1431 // anonymous class.
1432 return getEnclosingMethodInfo() != null;
1433 }
1434
1435 /**
1436 * Returns an array containing {@code Class} objects representing all
1437 * the public classes and interfaces that are members of the class
1438 * represented by this {@code Class} object. This includes public
1439 * class and interface members inherited from superclasses and public class
1440 * and interface members declared by the class. This method returns an
1441 * array of length 0 if this {@code Class} object has no public member
1442 * classes or interfaces. This method also returns an array of length 0 if
1443 * this {@code Class} object represents a primitive type, an array
1444 * class, or void.
1445 *
1446 * @return the array of {@code Class} objects representing the public
1447 * members of this class
1448 * @throws SecurityException
1449 * If a security manager, <i>s</i>, is present and
1450 * the caller's class loader is not the same as or an
1451 * ancestor of the class loader for the current class and
1452 * invocation of {@link SecurityManager#checkPackageAccess
1453 * s.checkPackageAccess()} denies access to the package
1454 * of this class.
1455 *
1456 * @since JDK1.1
1457 */
1458 @CallerSensitive
1459 public Class<?>[] getClasses() {
1460 if (System.getSecurityManager() != null) {
1461 checkMemberAccess(Member.PUBLIC, Reflection.getCallerClass(), false);
1462 }
1463
1464 // Privileged so this implementation can look at DECLARED classes,
1465 // something the caller might not have privilege to do. The code here
1466 // is allowed to look at DECLARED classes because (1) it does not hand
1467 // out anything other than public members and (2) public member access
1468 // has already been ok'd by the SecurityManager.
1469
1470 return java.security.AccessController.doPrivileged(
1471 new java.security.PrivilegedAction<Class<?>[]>() {
1472 public Class<?>[] run() {
1473 List<Class<?>> list = new ArrayList<>();
1474 Class<?> currentClass = Class.this;
1475 while (currentClass != null) {
1476 Class<?>[] members = currentClass.getDeclaredClasses();
1477 for (int i = 0; i < members.length; i++) {
1478 if (Modifier.isPublic(members[i].getModifiers())) {
1479 list.add(members[i]);
1480 }
1481 }
1482 currentClass = currentClass.getSuperclass();
1483 }
1484 return list.toArray(new Class<?>[0]);
1485 }
1486 });
1487 }
1488
1489
1490 /**
1491 * Returns an array containing {@code Field} objects reflecting all
1492 * the accessible public fields of the class or interface represented by
1493 * this {@code Class} object. The elements in the array returned are
1494 * not sorted and are not in any particular order. This method returns an
1495 * array of length 0 if the class or interface has no accessible public
1496 * fields, or if it represents an array class, a primitive type, or void.
1497 *
1498 * <p> Specifically, if this {@code Class} object represents a class,
1499 * this method returns the public fields of this class and of all its
1500 * superclasses. If this {@code Class} object represents an
1501 * interface, this method returns the fields of this interface and of all
1502 * its superinterfaces.
1503 *
1504 * <p> The implicit length field for array class is not reflected by this
1505 * method. User code should use the methods of class {@code Array} to
1506 * manipulate arrays.
1507 *
1508 * <p> See <em>The Java Language Specification</em>, sections 8.2 and 8.3.
1509 *
1510 * @return the array of {@code Field} objects representing the
1511 * public fields
1512 * @throws SecurityException
1513 * If a security manager, <i>s</i>, is present and
1514 * the caller's class loader is not the same as or an
1515 * ancestor of the class loader for the current class and
1516 * invocation of {@link SecurityManager#checkPackageAccess
1517 * s.checkPackageAccess()} denies access to the package
1518 * of this class.
1519 *
1520 * @since JDK1.1
1521 */
1522 @CallerSensitive
1523 public Field[] getFields() throws SecurityException {
1524 if (System.getSecurityManager() != null) {
1525 checkMemberAccess(Member.PUBLIC, Reflection.getCallerClass(), true);
1526 }
1527 return copyFields(privateGetPublicFields(null));
1528 }
1529
1530
1531 /**
1532 * Returns an array containing {@code Method} objects reflecting all
1533 * the public <em>member</em> methods of the class or interface represented
1534 * by this {@code Class} object, including those declared by the class
1535 * or interface and those inherited from superclasses and
1536 * superinterfaces. Array classes return all the (public) member methods
1537 * inherited from the {@code Object} class. The elements in the array
1538 * returned are not sorted and are not in any particular order. This
1539 * method returns an array of length 0 if this {@code Class} object
1540 * represents a class or interface that has no public member methods, or if
1541 * this {@code Class} object represents a primitive type or void.
1542 *
1543 * <p> The class initialization method {@code <clinit>} is not
1544 * included in the returned array. If the class declares multiple public
1545 * member methods with the same parameter types, they are all included in
1546 * the returned array.
1547 *
1548 * <p> See <em>The Java Language Specification</em>, sections 8.2 and 8.4.
1549 *
1550 * @return the array of {@code Method} objects representing the
1551 * public methods of this class
1552 * @throws SecurityException
1553 * If a security manager, <i>s</i>, is present and
1554 * the caller's class loader is not the same as or an
1555 * ancestor of the class loader for the current class and
1556 * invocation of {@link SecurityManager#checkPackageAccess
1557 * s.checkPackageAccess()} denies access to the package
1558 * of this class.
1559 *
1560 * @since JDK1.1
1561 */
1562 @CallerSensitive
1563 public Method[] getMethods() throws SecurityException {
1564 if (System.getSecurityManager() != null) {
1565 checkMemberAccess(Member.PUBLIC, Reflection.getCallerClass(), true);
1566 }
1567 return copyMethods(privateGetPublicMethods());
1568 }
1569
1570
1571 /**
1572 * Returns an array containing {@code Constructor} objects reflecting
1573 * all the public constructors of the class represented by this
1574 * {@code Class} object. An array of length 0 is returned if the
1575 * class has no public constructors, or if the class is an array class, or
1576 * if the class reflects a primitive type or void.
1577 *
1578 * Note that while this method returns an array of {@code
1579 * Constructor<T>} objects (that is an array of constructors from
1580 * this class), the return type of this method is {@code
1581 * Constructor<?>[]} and <em>not</em> {@code Constructor<T>[]} as
1582 * might be expected. This less informative return type is
1583 * necessary since after being returned from this method, the
1584 * array could be modified to hold {@code Constructor} objects for
1585 * different classes, which would violate the type guarantees of
1586 * {@code Constructor<T>[]}.
1587 *
1588 * @return the array of {@code Constructor} objects representing the
1589 * public constructors of this class
1590 * @throws SecurityException
1591 * If a security manager, <i>s</i>, is present and
1592 * the caller's class loader is not the same as or an
1593 * ancestor of the class loader for the current class and
1594 * invocation of {@link SecurityManager#checkPackageAccess
1595 * s.checkPackageAccess()} denies access to the package
1596 * of this class.
1597 *
1598 * @since JDK1.1
1599 */
1600 @CallerSensitive
1601 public Constructor<?>[] getConstructors() throws SecurityException {
1602 if (System.getSecurityManager() != null) {
1603 checkMemberAccess(Member.PUBLIC, Reflection.getCallerClass(), true);
1604 }
1605 return copyConstructors(privateGetDeclaredConstructors(true));
1606 }
1607
1608
1609 /**
1610 * Returns a {@code Field} object that reflects the specified public
1611 * member field of the class or interface represented by this
1612 * {@code Class} object. The {@code name} parameter is a
1613 * {@code String} specifying the simple name of the desired field.
1614 *
1615 * <p> The field to be reflected is determined by the algorithm that
1616 * follows. Let C be the class represented by this object:
1617 * <OL>
1618 * <LI> If C declares a public field with the name specified, that is the
1619 * field to be reflected.</LI>
1620 * <LI> If no field was found in step 1 above, this algorithm is applied
1621 * recursively to each direct superinterface of C. The direct
1622 * superinterfaces are searched in the order they were declared.</LI>
1623 * <LI> If no field was found in steps 1 and 2 above, and C has a
1624 * superclass S, then this algorithm is invoked recursively upon S.
1625 * If C has no superclass, then a {@code NoSuchFieldException}
1626 * is thrown.</LI>
1627 * </OL>
1628 *
1629 * <p> See <em>The Java Language Specification</em>, sections 8.2 and 8.3.
1630 *
1631 * @param name the field name
1632 * @return the {@code Field} object of this class specified by
1633 * {@code name}
1634 * @throws NoSuchFieldException if a field with the specified name is
1635 * not found.
1636 * @throws NullPointerException if {@code name} is {@code null}
1637 * @throws SecurityException
1638 * If a security manager, <i>s</i>, is present and
1639 * the caller's class loader is not the same as or an
1640 * ancestor of the class loader for the current class and
1641 * invocation of {@link SecurityManager#checkPackageAccess
1642 * s.checkPackageAccess()} denies access to the package
1643 * of this class.
1644 *
1645 * @since JDK1.1
1646 */
1647 @CallerSensitive
1648 public Field getField(String name)
1649 throws NoSuchFieldException, SecurityException {
1650 if (System.getSecurityManager() != null) {
1651 checkMemberAccess(Member.PUBLIC, Reflection.getCallerClass(), true);
1652 }
1653 Field field = getField0(name);
1654 if (field == null) {
1655 throw new NoSuchFieldException(name);
1656 }
1657 return field;
1658 }
1659
1660
1661 /**
1662 * Returns a {@code Method} object that reflects the specified public
1663 * member method of the class or interface represented by this
1664 * {@code Class} object. The {@code name} parameter is a
1665 * {@code String} specifying the simple name of the desired method. The
1666 * {@code parameterTypes} parameter is an array of {@code Class}
1667 * objects that identify the method's formal parameter types, in declared
1668 * order. If {@code parameterTypes} is {@code null}, it is
1669 * treated as if it were an empty array.
1670 *
1671 * <p> If the {@code name} is "{@code <init>};"or "{@code <clinit>}" a
1672 * {@code NoSuchMethodException} is raised. Otherwise, the method to
1673 * be reflected is determined by the algorithm that follows. Let C be the
1674 * class represented by this object:
1675 * <OL>
1676 * <LI> C is searched for any <I>matching methods</I>. If no matching
1677 * method is found, the algorithm of step 1 is invoked recursively on
1678 * the superclass of C.</LI>
1679 * <LI> If no method was found in step 1 above, the superinterfaces of C
1680 * are searched for a matching method. If any such method is found, it
1681 * is reflected.</LI>
1682 * </OL>
1683 *
1684 * To find a matching method in a class C: If C declares exactly one
1685 * public method with the specified name and exactly the same formal
1686 * parameter types, that is the method reflected. If more than one such
1687 * method is found in C, and one of these methods has a return type that is
1688 * more specific than any of the others, that method is reflected;
1689 * otherwise one of the methods is chosen arbitrarily.
1690 *
1691 * <p>Note that there may be more than one matching method in a
1692 * class because while the Java language forbids a class to
1693 * declare multiple methods with the same signature but different
1694 * return types, the Java virtual machine does not. This
1695 * increased flexibility in the virtual machine can be used to
1696 * implement various language features. For example, covariant
1697 * returns can be implemented with {@linkplain
1698 * java.lang.reflect.Method#isBridge bridge methods}; the bridge
1699 * method and the method being overridden would have the same
1700 * signature but different return types.
1701 *
1702 * <p> See <em>The Java Language Specification</em>, sections 8.2 and 8.4.
1703 *
1704 * @param name the name of the method
1705 * @param parameterTypes the list of parameters
1706 * @return the {@code Method} object that matches the specified
1707 * {@code name} and {@code parameterTypes}
1708 * @throws NoSuchMethodException if a matching method is not found
1709 * or if the name is "<init>"or "<clinit>".
1710 * @throws NullPointerException if {@code name} is {@code null}
1711 * @throws SecurityException
1712 * If a security manager, <i>s</i>, is present and
1713 * the caller's class loader is not the same as or an
1714 * ancestor of the class loader for the current class and
1715 * invocation of {@link SecurityManager#checkPackageAccess
1716 * s.checkPackageAccess()} denies access to the package
1717 * of this class.
1718 *
1719 * @since JDK1.1
1720 */
1721 @CallerSensitive
1722 public Method getMethod(String name, Class<?>... parameterTypes)
1723 throws NoSuchMethodException, SecurityException {
1724 if (System.getSecurityManager() != null) {
1725 checkMemberAccess(Member.PUBLIC, Reflection.getCallerClass(), true);
1726 }
1727 Method method = getMethod0(name, parameterTypes);
1728 if (method == null) {
1729 throw new NoSuchMethodException(getName() + "." + name + argumentTypesToString(parameterTypes));
1730 }
1731 return method;
1732 }
1733
1734
1735 /**
1736 * Returns a {@code Constructor} object that reflects the specified
1737 * public constructor of the class represented by this {@code Class}
1738 * object. The {@code parameterTypes} parameter is an array of
1739 * {@code Class} objects that identify the constructor's formal
1740 * parameter types, in declared order.
1741 *
1742 * If this {@code Class} object represents an inner class
1743 * declared in a non-static context, the formal parameter types
1744 * include the explicit enclosing instance as the first parameter.
1745 *
1746 * <p> The constructor to reflect is the public constructor of the class
1747 * represented by this {@code Class} object whose formal parameter
1748 * types match those specified by {@code parameterTypes}.
1749 *
1750 * @param parameterTypes the parameter array
1751 * @return the {@code Constructor} object of the public constructor that
1752 * matches the specified {@code parameterTypes}
1753 * @throws NoSuchMethodException if a matching method is not found.
1754 * @throws SecurityException
1755 * If a security manager, <i>s</i>, is present and
1756 * the caller's class loader is not the same as or an
1757 * ancestor of the class loader for the current class and
1758 * invocation of {@link SecurityManager#checkPackageAccess
1759 * s.checkPackageAccess()} denies access to the package
1760 * of this class.
1761 *
1762 * @since JDK1.1
1763 */
1764 @CallerSensitive
1765 public Constructor<T> getConstructor(Class<?>... parameterTypes)
1766 throws NoSuchMethodException, SecurityException {
1767 if (System.getSecurityManager() != null) {
1768 checkMemberAccess(Member.PUBLIC, Reflection.getCallerClass(), true);
1769 }
1770 return getConstructor0(parameterTypes, Member.PUBLIC);
1771 }
1772
1773
1774 /**
1775 * Returns an array of {@code Class} objects reflecting all the
1776 * classes and interfaces declared as members of the class represented by
1777 * this {@code Class} object. This includes public, protected, default
1778 * (package) access, and private classes and interfaces declared by the
1779 * class, but excludes inherited classes and interfaces. This method
1780 * returns an array of length 0 if the class declares no classes or
1781 * interfaces as members, or if this {@code Class} object represents a
1782 * primitive type, an array class, or void.
1783 *
1784 * @return the array of {@code Class} objects representing all the
1785 * declared members of this class
1786 * @throws SecurityException
1787 * If a security manager, <i>s</i>, is present and any of the
1788 * following conditions is met:
1789 *
1790 * <ul>
1791 *
1792 * <li> the caller's class loader is not the same as the
1793 * class loader of this class and invocation of
1794 * {@link SecurityManager#checkPermission
1795 * s.checkPermission} method with
1796 * {@code RuntimePermission("accessDeclaredMembers")}
1797 * denies access to the declared classes within this class
1798 *
1799 * <li> the caller's class loader is not the same as or an
1800 * ancestor of the class loader for the current class and
1801 * invocation of {@link SecurityManager#checkPackageAccess
1802 * s.checkPackageAccess()} denies access to the package
1803 * of this class
1804 *
1805 * </ul>
1806 *
1807 * @since JDK1.1
1808 */
1809 @CallerSensitive
1810 public Class<?>[] getDeclaredClasses() throws SecurityException {
1811 if (System.getSecurityManager() != null) {
1812 checkMemberAccess(Member.DECLARED, Reflection.getCallerClass(), false);
1813 }
1814 return getDeclaredClasses0();
1815 }
1816
1817
1818 /**
1819 * Returns an array of {@code Field} objects reflecting all the fields
1820 * declared by the class or interface represented by this
1821 * {@code Class} object. This includes public, protected, default
1822 * (package) access, and private fields, but excludes inherited fields.
1823 * The elements in the array returned are not sorted and are not in any
1824 * particular order. This method returns an array of length 0 if the class
1825 * or interface declares no fields, or if this {@code Class} object
1826 * represents a primitive type, an array class, or void.
1827 *
1828 * <p> See <em>The Java Language Specification</em>, sections 8.2 and 8.3.
1829 *
1830 * @return the array of {@code Field} objects representing all the
1831 * declared fields of this class
1832 * @throws SecurityException
1833 * If a security manager, <i>s</i>, is present and any of the
1834 * following conditions is met:
1835 *
1836 * <ul>
1837 *
1838 * <li> the caller's class loader is not the same as the
1839 * class loader of this class and invocation of
1840 * {@link SecurityManager#checkPermission
1841 * s.checkPermission} method with
1842 * {@code RuntimePermission("accessDeclaredMembers")}
1843 * denies access to the declared fields within this class
1844 *
1845 * <li> the caller's class loader is not the same as or an
1846 * ancestor of the class loader for the current class and
1847 * invocation of {@link SecurityManager#checkPackageAccess
1848 * s.checkPackageAccess()} denies access to the package
1849 * of this class
1850 *
1851 * </ul>
1852 *
1853 * @since JDK1.1
1854 */
1855 @CallerSensitive
1856 public Field[] getDeclaredFields() throws SecurityException {
1857 if (System.getSecurityManager() != null) {
1858 checkMemberAccess(Member.DECLARED, Reflection.getCallerClass(), true);
1859 }
1860 return copyFields(privateGetDeclaredFields(false));
1861 }
1862
1863
1864 /**
1865 * Returns an array of {@code Method} objects reflecting all the
1866 * methods declared by the class or interface represented by this
1867 * {@code Class} object. This includes public, protected, default
1868 * (package) access, and private methods, but excludes inherited methods.
1869 * The elements in the array returned are not sorted and are not in any
1870 * particular order. This method returns an array of length 0 if the class
1871 * or interface declares no methods, or if this {@code Class} object
1872 * represents a primitive type, an array class, or void. The class
1873 * initialization method {@code <clinit>} is not included in the
1874 * returned array. If the class declares multiple public member methods
1875 * with the same parameter types, they are all included in the returned
1876 * array.
1877 *
1878 * <p> See <em>The Java Language Specification</em>, section 8.2.
1879 *
1880 * @return the array of {@code Method} objects representing all the
1881 * declared methods of this class
1882 * @throws SecurityException
1883 * If a security manager, <i>s</i>, is present and any of the
1884 * following conditions is met:
1885 *
1886 * <ul>
1887 *
1888 * <li> the caller's class loader is not the same as the
1889 * class loader of this class and invocation of
1890 * {@link SecurityManager#checkPermission
1891 * s.checkPermission} method with
1892 * {@code RuntimePermission("accessDeclaredMembers")}
1893 * denies access to the declared methods within this class
1894 *
1895 * <li> the caller's class loader is not the same as or an
1896 * ancestor of the class loader for the current class and
1897 * invocation of {@link SecurityManager#checkPackageAccess
1898 * s.checkPackageAccess()} denies access to the package
1899 * of this class
1900 *
1901 * </ul>
1902 *
1903 * @since JDK1.1
1904 */
1905 @CallerSensitive
1906 public Method[] getDeclaredMethods() throws SecurityException {
1907 if (System.getSecurityManager() != null) {
1908 checkMemberAccess(Member.DECLARED, Reflection.getCallerClass(), true);
1909 }
1910 return copyMethods(privateGetDeclaredMethods(false));
1911 }
1912
1913
1914 /**
1915 * Returns an array of {@code Constructor} objects reflecting all the
1916 * constructors declared by the class represented by this
1917 * {@code Class} object. These are public, protected, default
1918 * (package) access, and private constructors. The elements in the array
1919 * returned are not sorted and are not in any particular order. If the
1920 * class has a default constructor, it is included in the returned array.
1921 * This method returns an array of length 0 if this {@code Class}
1922 * object represents an interface, a primitive type, an array class, or
1923 * void.
1924 *
1925 * <p> See <em>The Java Language Specification</em>, section 8.2.
1926 *
1927 * @return the array of {@code Constructor} objects representing all the
1928 * declared constructors of this class
1929 * @throws SecurityException
1930 * If a security manager, <i>s</i>, is present and any of the
1931 * following conditions is met:
1932 *
1933 * <ul>
1934 *
1935 * <li> the caller's class loader is not the same as the
1936 * class loader of this class and invocation of
1937 * {@link SecurityManager#checkPermission
1938 * s.checkPermission} method with
1939 * {@code RuntimePermission("accessDeclaredMembers")}
1940 * denies access to the declared constructors within this class
1941 *
1942 * <li> the caller's class loader is not the same as or an
1943 * ancestor of the class loader for the current class and
1944 * invocation of {@link SecurityManager#checkPackageAccess
1945 * s.checkPackageAccess()} denies access to the package
1946 * of this class
1947 *
1948 * </ul>
1949 *
1950 * @since JDK1.1
1951 */
1952 @CallerSensitive
1953 public Constructor<?>[] getDeclaredConstructors() throws SecurityException {
1954 if (System.getSecurityManager() != null) {
1955 checkMemberAccess(Member.DECLARED, Reflection.getCallerClass(), true);
1956 }
1957 return copyConstructors(privateGetDeclaredConstructors(false));
1958 }
1959
1960
1961 /**
1962 * Returns a {@code Field} object that reflects the specified declared
1963 * field of the class or interface represented by this {@code Class}
1964 * object. The {@code name} parameter is a {@code String} that
1965 * specifies the simple name of the desired field. Note that this method
1966 * will not reflect the {@code length} field of an array class.
1967 *
1968 * @param name the name of the field
1969 * @return the {@code Field} object for the specified field in this
1970 * class
1971 * @throws NoSuchFieldException if a field with the specified name is
1972 * not found.
1973 * @throws NullPointerException if {@code name} is {@code null}
1974 * @throws SecurityException
1975 * If a security manager, <i>s</i>, is present and any of the
1976 * following conditions is met:
1977 *
1978 * <ul>
1979 *
1980 * <li> the caller's class loader is not the same as the
1981 * class loader of this class and invocation of
1982 * {@link SecurityManager#checkPermission
1983 * s.checkPermission} method with
1984 * {@code RuntimePermission("accessDeclaredMembers")}
1985 * denies access to the declared field
1986 *
1987 * <li> the caller's class loader is not the same as or an
1988 * ancestor of the class loader for the current class and
1989 * invocation of {@link SecurityManager#checkPackageAccess
1990 * s.checkPackageAccess()} denies access to the package
1991 * of this class
1992 *
1993 * </ul>
1994 *
1995 * @since JDK1.1
1996 */
1997 @CallerSensitive
1998 public Field getDeclaredField(String name)
1999 throws NoSuchFieldException, SecurityException {
2000 if (System.getSecurityManager() != null) {
2001 checkMemberAccess(Member.DECLARED, Reflection.getCallerClass(), true);
2002 }
2003 Field field = searchFields(privateGetDeclaredFields(false), name);
2004 if (field == null) {
2005 throw new NoSuchFieldException(name);
2006 }
2007 return field;
2008 }
2009
2010
2011 /**
2012 * Returns a {@code Method} object that reflects the specified
2013 * declared method of the class or interface represented by this
2014 * {@code Class} object. The {@code name} parameter is a
2015 * {@code String} that specifies the simple name of the desired
2016 * method, and the {@code parameterTypes} parameter is an array of
2017 * {@code Class} objects that identify the method's formal parameter
2018 * types, in declared order. If more than one method with the same
2019 * parameter types is declared in a class, and one of these methods has a
2020 * return type that is more specific than any of the others, that method is
2021 * returned; otherwise one of the methods is chosen arbitrarily. If the
2022 * name is "<init>"or "<clinit>" a {@code NoSuchMethodException}
2023 * is raised.
2024 *
2025 * @param name the name of the method
2026 * @param parameterTypes the parameter array
2027 * @return the {@code Method} object for the method of this class
2028 * matching the specified name and parameters
2029 * @throws NoSuchMethodException if a matching method is not found.
2030 * @throws NullPointerException if {@code name} is {@code null}
2031 * @throws SecurityException
2032 * If a security manager, <i>s</i>, is present and any of the
2033 * following conditions is met:
2034 *
2035 * <ul>
2036 *
2037 * <li> the caller's class loader is not the same as the
2038 * class loader of this class and invocation of
2039 * {@link SecurityManager#checkPermission
2040 * s.checkPermission} method with
2041 * {@code RuntimePermission("accessDeclaredMembers")}
2042 * denies access to the declared method
2043 *
2044 * <li> the caller's class loader is not the same as or an
2045 * ancestor of the class loader for the current class and
2046 * invocation of {@link SecurityManager#checkPackageAccess
2047 * s.checkPackageAccess()} denies access to the package
2048 * of this class
2049 *
2050 * </ul>
2051 *
2052 * @since JDK1.1
2053 */
2054 @CallerSensitive
2055 public Method getDeclaredMethod(String name, Class<?>... parameterTypes)
2056 throws NoSuchMethodException, SecurityException {
2057 if (System.getSecurityManager() != null) {
2058 checkMemberAccess(Member.DECLARED, Reflection.getCallerClass(), true);
2059 }
2060 Method method = searchMethods(privateGetDeclaredMethods(false), name, parameterTypes);
2061 if (method == null) {
2062 throw new NoSuchMethodException(getName() + "." + name + argumentTypesToString(parameterTypes));
2063 }
2064 return method;
2065 }
2066
2067
2068 /**
2069 * Returns a {@code Constructor} object that reflects the specified
2070 * constructor of the class or interface represented by this
2071 * {@code Class} object. The {@code parameterTypes} parameter is
2072 * an array of {@code Class} objects that identify the constructor's
2073 * formal parameter types, in declared order.
2074 *
2075 * If this {@code Class} object represents an inner class
2076 * declared in a non-static context, the formal parameter types
2077 * include the explicit enclosing instance as the first parameter.
2078 *
2079 * @param parameterTypes the parameter array
2080 * @return The {@code Constructor} object for the constructor with the
2081 * specified parameter list
2082 * @throws NoSuchMethodException if a matching method is not found.
2083 * @throws SecurityException
2084 * If a security manager, <i>s</i>, is present and any of the
2085 * following conditions is met:
2086 *
2087 * <ul>
2088 *
2089 * <li> the caller's class loader is not the same as the
2090 * class loader of this class and invocation of
2091 * {@link SecurityManager#checkPermission
2092 * s.checkPermission} method with
2093 * {@code RuntimePermission("accessDeclaredMembers")}
2094 * denies access to the declared constructor
2095 *
2096 * <li> the caller's class loader is not the same as or an
2097 * ancestor of the class loader for the current class and
2098 * invocation of {@link SecurityManager#checkPackageAccess
2099 * s.checkPackageAccess()} denies access to the package
2100 * of this class
2101 *
2102 * </ul>
2103 *
2104 * @since JDK1.1
2105 */
2106 @CallerSensitive
2107 public Constructor<T> getDeclaredConstructor(Class<?>... parameterTypes)
2108 throws NoSuchMethodException, SecurityException {
2109 if (System.getSecurityManager() != null) {
2110 checkMemberAccess(Member.DECLARED, Reflection.getCallerClass(), true);
2111 }
2112 return getConstructor0(parameterTypes, Member.DECLARED);
2113 }
2114
2115 /**
2116 * Finds a resource with a given name. The rules for searching resources
2117 * associated with a given class are implemented by the defining
2118 * {@linkplain ClassLoader class loader} of the class. This method
2119 * delegates to this object's class loader. If this object was loaded by
2120 * the bootstrap class loader, the method delegates to {@link
2121 * ClassLoader#getSystemResourceAsStream}.
2122 *
2123 * <p> Before delegation, an absolute resource name is constructed from the
2124 * given resource name using this algorithm:
2125 *
2126 * <ul>
2127 *
2128 * <li> If the {@code name} begins with a {@code '/'}
2129 * (<tt>'\u002f'</tt>), then the absolute name of the resource is the
2130 * portion of the {@code name} following the {@code '/'}.
2131 *
2132 * <li> Otherwise, the absolute name is of the following form:
2133 *
2134 * <blockquote>
2135 * {@code modified_package_name/name}
2136 * </blockquote>
2137 *
2138 * <p> Where the {@code modified_package_name} is the package name of this
2139 * object with {@code '/'} substituted for {@code '.'}
2140 * (<tt>'\u002e'</tt>).
2141 *
2142 * </ul>
2143 *
2144 * @param name name of the desired resource
2145 * @return A {@link java.io.InputStream} object or {@code null} if
2146 * no resource with this name is found
2147 * @throws NullPointerException If {@code name} is {@code null}
2148 * @since JDK1.1
2149 */
2150 public InputStream getResourceAsStream(String name) {
2151 name = resolveName(name);
2152 ClassLoader cl = getClassLoader0();
2153 if (cl==null) {
2154 // A system class.
2155 return ClassLoader.getSystemResourceAsStream(name);
2156 }
2157 return cl.getResourceAsStream(name);
2158 }
2159
2160 /**
2161 * Finds a resource with a given name. The rules for searching resources
2162 * associated with a given class are implemented by the defining
2163 * {@linkplain ClassLoader class loader} of the class. This method
2164 * delegates to this object's class loader. If this object was loaded by
2165 * the bootstrap class loader, the method delegates to {@link
2166 * ClassLoader#getSystemResource}.
2167 *
2168 * <p> Before delegation, an absolute resource name is constructed from the
2169 * given resource name using this algorithm:
2170 *
2171 * <ul>
2172 *
2173 * <li> If the {@code name} begins with a {@code '/'}
2174 * (<tt>'\u002f'</tt>), then the absolute name of the resource is the
2175 * portion of the {@code name} following the {@code '/'}.
2176 *
2177 * <li> Otherwise, the absolute name is of the following form:
2178 *
2179 * <blockquote>
2180 * {@code modified_package_name/name}
2181 * </blockquote>
2182 *
2183 * <p> Where the {@code modified_package_name} is the package name of this
2184 * object with {@code '/'} substituted for {@code '.'}
2185 * (<tt>'\u002e'</tt>).
2186 *
2187 * </ul>
2188 *
2189 * @param name name of the desired resource
2190 * @return A {@link java.net.URL} object or {@code null} if no
2191 * resource with this name is found
2192 * @since JDK1.1
2193 */
2194 public java.net.URL getResource(String name) {
2195 name = resolveName(name);
2196 ClassLoader cl = getClassLoader0();
2197 if (cl==null) {
2198 // A system class.
2199 return ClassLoader.getSystemResource(name);
2200 }
2201 return cl.getResource(name);
2202 }
2203
2204
2205
2206 /** protection domain returned when the internal domain is null */
2207 private static java.security.ProtectionDomain allPermDomain;
2208
2209
2210 /**
2211 * Returns the {@code ProtectionDomain} of this class. If there is a
2212 * security manager installed, this method first calls the security
2213 * manager's {@code checkPermission} method with a
2214 * {@code RuntimePermission("getProtectionDomain")} permission to
2215 * ensure it's ok to get the
2216 * {@code ProtectionDomain}.
2217 *
2218 * @return the ProtectionDomain of this class
2219 *
2220 * @throws SecurityException
2221 * if a security manager exists and its
2222 * {@code checkPermission} method doesn't allow
2223 * getting the ProtectionDomain.
2224 *
2225 * @see java.security.ProtectionDomain
2226 * @see SecurityManager#checkPermission
2227 * @see java.lang.RuntimePermission
2228 * @since 1.2
2229 */
2230 public java.security.ProtectionDomain getProtectionDomain() {
2231 SecurityManager sm = System.getSecurityManager();
2232 if (sm != null) {
2233 sm.checkPermission(SecurityConstants.GET_PD_PERMISSION);
2234 }
2235 java.security.ProtectionDomain pd = getProtectionDomain0();
2236 if (pd == null) {
2237 if (allPermDomain == null) {
2238 java.security.Permissions perms =
2239 new java.security.Permissions();
2240 perms.add(SecurityConstants.ALL_PERMISSION);
2241 allPermDomain =
2242 new java.security.ProtectionDomain(null, perms);
2243 }
2244 pd = allPermDomain;
2245 }
2246 return pd;
2247 }
2248
2249
2250 /**
2251 * Returns the ProtectionDomain of this class.
2252 */
2253 private native java.security.ProtectionDomain getProtectionDomain0();
2254
2255 /*
2256 * Return the Virtual Machine's Class object for the named
2257 * primitive type.
2258 */
2259 static native Class<?> getPrimitiveClass(String name);
2260
2261 /*
2262 * Check if client is allowed to access members. If access is denied,
2263 * throw a SecurityException.
2264 *
2265 * This method also enforces package access.
2266 *
2267 * <p> Default policy: allow all clients access with normal Java access
2268 * control.
2269 */
2270 private void checkMemberAccess(int which, Class<?> caller, boolean checkProxyInterfaces) {
2271 final SecurityManager s = System.getSecurityManager();
2272 if (s != null) {
2273 /* Default policy allows access to all {@link Member#PUBLIC} members,
2274 * as well as access to classes that have the same class loader as the caller.
2275 * In all other cases, it requires RuntimePermission("accessDeclaredMembers")
2276 * permission.
2277 */
2278 final ClassLoader ccl = ClassLoader.getClassLoader(caller);
2279 final ClassLoader cl = getClassLoader0();
2280 if (which != Member.PUBLIC) {
2281 if (ccl != cl) {
2282 s.checkPermission(SecurityConstants.CHECK_MEMBER_ACCESS_PERMISSION);
2283 }
2284 }
2285 this.checkPackageAccess(ccl, checkProxyInterfaces);
2286 }
2287 }
2288
2289 /*
2290 * Checks if a client loaded in ClassLoader ccl is allowed to access this
2291 * class under the current package access policy. If access is denied,
2292 * throw a SecurityException.
2293 */
2294 private void checkPackageAccess(final ClassLoader ccl, boolean checkProxyInterfaces) {
2295 final SecurityManager s = System.getSecurityManager();
2296 if (s != null) {
2297 final ClassLoader cl = getClassLoader0();
2298
2299 if (ReflectUtil.needsPackageAccessCheck(ccl, cl)) {
2300 String name = this.getName();
2301 int i = name.lastIndexOf('.');
2302 if (i != -1) {
2303 // skip the package access check on a proxy class in default proxy package
2304 String pkg = name.substring(0, i);
2305 if (!Proxy.isProxyClass(this) || ReflectUtil.isNonPublicProxyClass(this)) {
2306 s.checkPackageAccess(pkg);
2307 }
2308 }
2309 }
2310 // check package access on the proxy interfaces
2311 if (checkProxyInterfaces && Proxy.isProxyClass(this)) {
2312 ReflectUtil.checkProxyPackageAccess(ccl, this.getInterfaces());
2313 }
2314 }
2315 }
2316
2317 /**
2318 * Add a package name prefix if the name is not absolute Remove leading "/"
2319 * if name is absolute
2320 */
2321 private String resolveName(String name) {
2322 if (name == null) {
2323 return name;
2324 }
2325 if (!name.startsWith("/")) {
2326 Class<?> c = this;
2327 while (c.isArray()) {
2328 c = c.getComponentType();
2329 }
2330 String baseName = c.getName();
2331 int index = baseName.lastIndexOf('.');
2332 if (index != -1) {
2333 name = baseName.substring(0, index).replace('.', '/')
2334 +"/"+name;
2335 }
2336 } else {
2337 name = name.substring(1);
2338 }
2339 return name;
2340 }
2341
2342 /**
2343 * Reflection support.
2344 */
2345
2346 // Caches for certain reflective results
2347 private static boolean useCaches = true;
2348
2349 // reflection data that might get invalidated when JVM TI RedefineClasses() is called
2350 static class ReflectionData<T> {
2351 volatile Field[] declaredFields;
2352 volatile Field[] publicFields;
2353 volatile Method[] declaredMethods;
2354 volatile Method[] publicMethods;
2355 volatile Constructor<T>[] declaredConstructors;
2356 volatile Constructor<T>[] publicConstructors;
2357 // Intermediate results for getFields and getMethods
2358 volatile Field[] declaredPublicFields;
2359 volatile Method[] declaredPublicMethods;
2360 volatile Class<?>[] interfaces;
2361
2362 // Value of classRedefinedCount when we created this ReflectionData instance
2363 final int redefinedCount;
2364
2365 ReflectionData(int redefinedCount) {
2366 this.redefinedCount = redefinedCount;
2367 }
2368
2369 // initialize Unsafe machinery here, since we need to call Class.class instance method
2370 // and have to avoid calling it in the static initializer of the Class class...
2371 private static final Unsafe unsafe;
2372 // offset of Class.reflectionData instance field
2373 private static final long reflectionDataOffset;
2374
2375 static {
2376 unsafe = Unsafe.getUnsafe();
2377 // bypass caches
2378 Field reflectionDataField = searchFields(Class.class.getDeclaredFields0(false),
2379 "reflectionData");
2380 if (reflectionDataField == null) {
2381 throw new Error("No reflectionData field found in java.lang.Class");
2382 }
2383 reflectionDataOffset = unsafe.objectFieldOffset(reflectionDataField);
2384 }
2385
2386 static <T> boolean compareAndSwap(Class<?> clazz,
2387 SoftReference<ReflectionData<T>> oldData,
2388 SoftReference<ReflectionData<T>> newData) {
2389 return unsafe.compareAndSwapObject(clazz, reflectionDataOffset, oldData, newData);
2390 }
2391 }
2392
2393 private volatile transient SoftReference<ReflectionData<T>> reflectionData;
2394
2395 // Incremented by the VM on each call to JVM TI RedefineClasses()
2396 // that redefines this class or a superclass.
2397 private volatile transient int classRedefinedCount = 0;
2398
2399 // Lazily create and cache ReflectionData
2400 private ReflectionData<T> reflectionData() {
2401 SoftReference<ReflectionData<T>> reflectionData = this.reflectionData;
2402 int classRedefinedCount = this.classRedefinedCount;
2403 ReflectionData<T> rd;
2404 if (useCaches &&
2405 reflectionData != null &&
2406 (rd = reflectionData.get()) != null &&
2407 rd.redefinedCount == classRedefinedCount) {
2408 return rd;
2409 }
2410 // else no SoftReference or cleared SoftReference or stale ReflectionData
2411 // -> create and replace new instance
2412 return newReflectionData(reflectionData, classRedefinedCount);
2413 }
2414
2415 private ReflectionData<T> newReflectionData(SoftReference<ReflectionData<T>> oldReflectionData,
2416 int classRedefinedCount) {
2417 if (!useCaches) return null;
2418
2419 while (true) {
2420 ReflectionData<T> rd = new ReflectionData<>(classRedefinedCount);
2421 // try to CAS it...
2422 if (ReflectionData.compareAndSwap(this, oldReflectionData, new SoftReference<>(rd))) {
2423 return rd;
2424 }
2425 // else retry
2426 oldReflectionData = this.reflectionData;
2427 classRedefinedCount = this.classRedefinedCount;
2428 if (oldReflectionData != null &&
2429 (rd = oldReflectionData.get()) != null &&
2430 rd.redefinedCount == classRedefinedCount) {
2431 return rd;
2432 }
2433 }
2434 }
2435
2436 // Generic signature handling
2437 private native String getGenericSignature0();
2438
2439 // Generic info repository; lazily initialized
2440 private volatile transient ClassRepository genericInfo;
2441
2442 // accessor for factory
2443 private GenericsFactory getFactory() {
2444 // create scope and factory
2445 return CoreReflectionFactory.make(this, ClassScope.make(this));
2446 }
2447
2448 // accessor for generic info repository;
2449 // generic info is lazily initialized
2450 private ClassRepository getGenericInfo() {
2451 ClassRepository genericInfo = this.genericInfo;
2452 if (genericInfo == null) {
2453 String signature = getGenericSignature0();
2454 if (signature == null) {
2455 genericInfo = ClassRepository.NONE;
2456 } else {
2457 genericInfo = ClassRepository.make(signature, getFactory());
2458 }
2459 this.genericInfo = genericInfo;
2460 }
2461 return (genericInfo != ClassRepository.NONE) ? genericInfo : null;
2462 }
2463
2464 // Annotations handling
2465 private native byte[] getRawAnnotations();
2466 // Since 1.8
2467 native byte[] getRawTypeAnnotations();
2468 static byte[] getExecutableTypeAnnotationBytes(Executable ex) {
2469 return getReflectionFactory().getExecutableTypeAnnotationBytes(ex);
2470 }
2471
2472 native ConstantPool getConstantPool();
2473
2474 //
2475 //
2476 // java.lang.reflect.Field handling
2477 //
2478 //
2479
2480 // Returns an array of "root" fields. These Field objects must NOT
2481 // be propagated to the outside world, but must instead be copied
2482 // via ReflectionFactory.copyField.
2483 private Field[] privateGetDeclaredFields(boolean publicOnly) {
2484 checkInitted();
2485 Field[] res;
2486 ReflectionData<T> rd = reflectionData();
2487 if (rd != null) {
2488 res = publicOnly ? rd.declaredPublicFields : rd.declaredFields;
2489 if (res != null) return res;
2490 }
2491 // No cached value available; request value from VM
2492 res = Reflection.filterFields(this, getDeclaredFields0(publicOnly));
2493 if (rd != null) {
2494 if (publicOnly) {
2495 rd.declaredPublicFields = res;
2496 } else {
2497 rd.declaredFields = res;
2498 }
2499 }
2500 return res;
2501 }
2502
2503 // Returns an array of "root" fields. These Field objects must NOT
2504 // be propagated to the outside world, but must instead be copied
2505 // via ReflectionFactory.copyField.
2506 private Field[] privateGetPublicFields(Set<Class<?>> traversedInterfaces) {
2507 checkInitted();
2508 Field[] res;
2509 ReflectionData<T> rd = reflectionData();
2510 if (rd != null) {
2511 res = rd.publicFields;
2512 if (res != null) return res;
2513 }
2514
2515 // No cached value available; compute value recursively.
2516 // Traverse in correct order for getField().
2517 List<Field> fields = new ArrayList<>();
2518 if (traversedInterfaces == null) {
2519 traversedInterfaces = new HashSet<>();
2520 }
2521
2522 // Local fields
2523 Field[] tmp = privateGetDeclaredFields(true);
2524 addAll(fields, tmp);
2525
2526 // Direct superinterfaces, recursively
2527 for (Class<?> c : getInterfaces()) {
2528 if (!traversedInterfaces.contains(c)) {
2529 traversedInterfaces.add(c);
2530 addAll(fields, c.privateGetPublicFields(traversedInterfaces));
2531 }
2532 }
2533
2534 // Direct superclass, recursively
2535 if (!isInterface()) {
2536 Class<?> c = getSuperclass();
2537 if (c != null) {
2538 addAll(fields, c.privateGetPublicFields(traversedInterfaces));
2539 }
2540 }
2541
2542 res = new Field[fields.size()];
2543 fields.toArray(res);
2544 if (rd != null) {
2545 rd.publicFields = res;
2546 }
2547 return res;
2548 }
2549
2550 private static void addAll(Collection<Field> c, Field[] o) {
2551 for (int i = 0; i < o.length; i++) {
2552 c.add(o[i]);
2553 }
2554 }
2555
2556
2557 //
2558 //
2559 // java.lang.reflect.Constructor handling
2560 //
2561 //
2562
2563 // Returns an array of "root" constructors. These Constructor
2564 // objects must NOT be propagated to the outside world, but must
2565 // instead be copied via ReflectionFactory.copyConstructor.
2566 private Constructor<T>[] privateGetDeclaredConstructors(boolean publicOnly) {
2567 checkInitted();
2568 Constructor<T>[] res;
2569 ReflectionData<T> rd = reflectionData();
2570 if (rd != null) {
2571 res = publicOnly ? rd.publicConstructors : rd.declaredConstructors;
2572 if (res != null) return res;
2573 }
2574 // No cached value available; request value from VM
2575 if (isInterface()) {
2576 @SuppressWarnings("unchecked")
2577 Constructor<T>[] temporaryRes = (Constructor<T>[]) new Constructor<?>[0];
2578 res = temporaryRes;
2579 } else {
2580 res = getDeclaredConstructors0(publicOnly);
2581 }
2582 if (rd != null) {
2583 if (publicOnly) {
2584 rd.publicConstructors = res;
2585 } else {
2586 rd.declaredConstructors = res;
2587 }
2588 }
2589 return res;
2590 }
2591
2592 //
2593 //
2594 // java.lang.reflect.Method handling
2595 //
2596 //
2597
2598 // Returns an array of "root" methods. These Method objects must NOT
2599 // be propagated to the outside world, but must instead be copied
2600 // via ReflectionFactory.copyMethod.
2601 private Method[] privateGetDeclaredMethods(boolean publicOnly) {
2602 checkInitted();
2603 Method[] res;
2604 ReflectionData<T> rd = reflectionData();
2605 if (rd != null) {
2606 res = publicOnly ? rd.declaredPublicMethods : rd.declaredMethods;
2607 if (res != null) return res;
2608 }
2609 // No cached value available; request value from VM
2610 res = Reflection.filterMethods(this, getDeclaredMethods0(publicOnly));
2611 if (rd != null) {
2612 if (publicOnly) {
2613 rd.declaredPublicMethods = res;
2614 } else {
2615 rd.declaredMethods = res;
2616 }
2617 }
2618 return res;
2619 }
2620
2621 static class MethodArray {
2622 private Method[] methods;
2623 private int length;
2624
2625 MethodArray() {
2626 methods = new Method[20];
2627 length = 0;
2628 }
2629
2630 void add(Method m) {
2631 if (length == methods.length) {
2632 methods = Arrays.copyOf(methods, 2 * methods.length);
2633 }
2634 methods[length++] = m;
2635 }
2636
2637 void addAll(Method[] ma) {
2638 for (int i = 0; i < ma.length; i++) {
2639 add(ma[i]);
2640 }
2641 }
2642
2643 void addAll(MethodArray ma) {
2644 for (int i = 0; i < ma.length(); i++) {
2645 add(ma.get(i));
2646 }
2647 }
2648
2649 void addIfNotPresent(Method newMethod) {
2650 for (int i = 0; i < length; i++) {
2651 Method m = methods[i];
2652 if (m == newMethod || (m != null && m.equals(newMethod))) {
2653 return;
2654 }
2655 }
2656 add(newMethod);
2657 }
2658
2659 void addAllIfNotPresent(MethodArray newMethods) {
2660 for (int i = 0; i < newMethods.length(); i++) {
2661 Method m = newMethods.get(i);
2662 if (m != null) {
2663 addIfNotPresent(m);
2664 }
2665 }
2666 }
2667
2668 int length() {
2669 return length;
2670 }
2671
2672 Method get(int i) {
2673 return methods[i];
2674 }
2675
2676 void removeByNameAndSignature(Method toRemove) {
2677 for (int i = 0; i < length; i++) {
2678 Method m = methods[i];
2679 if (m != null &&
2680 m.getReturnType() == toRemove.getReturnType() &&
2681 m.getName() == toRemove.getName() &&
2682 arrayContentsEq(m.getParameterTypes(),
2683 toRemove.getParameterTypes())) {
2684 methods[i] = null;
2685 }
2686 }
2687 }
2688
2689 void compactAndTrim() {
2690 int newPos = 0;
2691 // Get rid of null slots
2692 for (int pos = 0; pos < length; pos++) {
2693 Method m = methods[pos];
2694 if (m != null) {
2695 if (pos != newPos) {
2696 methods[newPos] = m;
2697 }
2698 newPos++;
2699 }
2700 }
2701 if (newPos != methods.length) {
2702 methods = Arrays.copyOf(methods, newPos);
2703 }
2704 }
2705
2706 Method[] getArray() {
2707 return methods;
2708 }
2709 }
2710
2711
2712 // Returns an array of "root" methods. These Method objects must NOT
2713 // be propagated to the outside world, but must instead be copied
2714 // via ReflectionFactory.copyMethod.
2715 private Method[] privateGetPublicMethods() {
2716 checkInitted();
2717 Method[] res;
2718 ReflectionData<T> rd = reflectionData();
2719 if (rd != null) {
2720 res = rd.publicMethods;
2721 if (res != null) return res;
2722 }
2723
2724 // No cached value available; compute value recursively.
2725 // Start by fetching public declared methods
2726 MethodArray methods = new MethodArray();
2727 {
2728 Method[] tmp = privateGetDeclaredMethods(true);
2729 methods.addAll(tmp);
2730 }
2731 // Now recur over superclass and direct superinterfaces.
2732 // Go over superinterfaces first so we can more easily filter
2733 // out concrete implementations inherited from superclasses at
2734 // the end.
2735 MethodArray inheritedMethods = new MethodArray();
2736 Class<?>[] interfaces = getInterfaces();
2737 for (int i = 0; i < interfaces.length; i++) {
2738 inheritedMethods.addAll(interfaces[i].privateGetPublicMethods());
2739 }
2740 if (!isInterface()) {
2741 Class<?> c = getSuperclass();
2742 if (c != null) {
2743 MethodArray supers = new MethodArray();
2744 supers.addAll(c.privateGetPublicMethods());
2745 // Filter out concrete implementations of any
2746 // interface methods
2747 for (int i = 0; i < supers.length(); i++) {
2748 Method m = supers.get(i);
2749 if (m != null && !Modifier.isAbstract(m.getModifiers())) {
2750 inheritedMethods.removeByNameAndSignature(m);
2751 }
2752 }
2753 // Insert superclass's inherited methods before
2754 // superinterfaces' to satisfy getMethod's search
2755 // order
2756 supers.addAll(inheritedMethods);
2757 inheritedMethods = supers;
2758 }
2759 }
2760 // Filter out all local methods from inherited ones
2761 for (int i = 0; i < methods.length(); i++) {
2762 Method m = methods.get(i);
2763 inheritedMethods.removeByNameAndSignature(m);
2764 }
2765 methods.addAllIfNotPresent(inheritedMethods);
2766 methods.compactAndTrim();
2767 res = methods.getArray();
2768 if (rd != null) {
2769 rd.publicMethods = res;
2770 }
2771 return res;
2772 }
2773
2774
2775 //
2776 // Helpers for fetchers of one field, method, or constructor
2777 //
2778
2779 private static Field searchFields(Field[] fields, String name) {
2780 String internedName = name.intern();
2781 for (int i = 0; i < fields.length; i++) {
2782 if (fields[i].getName() == internedName) {
2783 return getReflectionFactory().copyField(fields[i]);
2784 }
2785 }
2786 return null;
2787 }
2788
2789 private Field getField0(String name) throws NoSuchFieldException {
2790 // Note: the intent is that the search algorithm this routine
2791 // uses be equivalent to the ordering imposed by
2792 // privateGetPublicFields(). It fetches only the declared
2793 // public fields for each class, however, to reduce the number
2794 // of Field objects which have to be created for the common
2795 // case where the field being requested is declared in the
2796 // class which is being queried.
2797 Field res;
2798 // Search declared public fields
2799 if ((res = searchFields(privateGetDeclaredFields(true), name)) != null) {
2800 return res;
2801 }
2802 // Direct superinterfaces, recursively
2803 Class<?>[] interfaces = getInterfaces();
2804 for (int i = 0; i < interfaces.length; i++) {
2805 Class<?> c = interfaces[i];
2806 if ((res = c.getField0(name)) != null) {
2807 return res;
2808 }
2809 }
2810 // Direct superclass, recursively
2811 if (!isInterface()) {
2812 Class<?> c = getSuperclass();
2813 if (c != null) {
2814 if ((res = c.getField0(name)) != null) {
2815 return res;
2816 }
2817 }
2818 }
2819 return null;
2820 }
2821
2822 private static Method searchMethods(Method[] methods,
2823 String name,
2824 Class<?>[] parameterTypes)
2825 {
2826 Method res = null;
2827 String internedName = name.intern();
2828 for (int i = 0; i < methods.length; i++) {
2829 Method m = methods[i];
2830 if (m.getName() == internedName
2831 && arrayContentsEq(parameterTypes, m.getParameterTypes())
2832 && (res == null
2833 || res.getReturnType().isAssignableFrom(m.getReturnType())))
2834 res = m;
2835 }
2836
2837 return (res == null ? res : getReflectionFactory().copyMethod(res));
2838 }
2839
2840
2841 private Method getMethod0(String name, Class<?>[] parameterTypes) {
2842 // Note: the intent is that the search algorithm this routine
2843 // uses be equivalent to the ordering imposed by
2844 // privateGetPublicMethods(). It fetches only the declared
2845 // public methods for each class, however, to reduce the
2846 // number of Method objects which have to be created for the
2847 // common case where the method being requested is declared in
2848 // the class which is being queried.
2849 Method res;
2850 // Search declared public methods
2851 if ((res = searchMethods(privateGetDeclaredMethods(true),
2852 name,
2853 parameterTypes)) != null) {
2854 return res;
2855 }
2856 // Search superclass's methods
2857 if (!isInterface()) {
2858 Class<? super T> c = getSuperclass();
2859 if (c != null) {
2860 if ((res = c.getMethod0(name, parameterTypes)) != null) {
2861 return res;
2862 }
2863 }
2864 }
2865 // Search superinterfaces' methods
2866 Class<?>[] interfaces = getInterfaces();
2867 for (int i = 0; i < interfaces.length; i++) {
2868 Class<?> c = interfaces[i];
2869 if ((res = c.getMethod0(name, parameterTypes)) != null) {
2870 return res;
2871 }
2872 }
2873 // Not found
2874 return null;
2875 }
2876
2877 private Constructor<T> getConstructor0(Class<?>[] parameterTypes,
2878 int which) throws NoSuchMethodException
2879 {
2880 Constructor<T>[] constructors = privateGetDeclaredConstructors((which == Member.PUBLIC));
2881 for (Constructor<T> constructor : constructors) {
2882 if (arrayContentsEq(parameterTypes,
2883 constructor.getParameterTypes())) {
2884 return getReflectionFactory().copyConstructor(constructor);
2885 }
2886 }
2887 throw new NoSuchMethodException(getName() + ".<init>" + argumentTypesToString(parameterTypes));
2888 }
2889
2890 //
2891 // Other helpers and base implementation
2892 //
2893
2894 private static boolean arrayContentsEq(Object[] a1, Object[] a2) {
2895 if (a1 == null) {
2896 return a2 == null || a2.length == 0;
2897 }
2898
2899 if (a2 == null) {
2900 return a1.length == 0;
2901 }
2902
2903 if (a1.length != a2.length) {
2904 return false;
2905 }
2906
2907 for (int i = 0; i < a1.length; i++) {
2908 if (a1[i] != a2[i]) {
2909 return false;
2910 }
2911 }
2912
2913 return true;
2914 }
2915
2916 private static Field[] copyFields(Field[] arg) {
2917 Field[] out = new Field[arg.length];
2918 ReflectionFactory fact = getReflectionFactory();
2919 for (int i = 0; i < arg.length; i++) {
2920 out[i] = fact.copyField(arg[i]);
2921 }
2922 return out;
2923 }
2924
2925 private static Method[] copyMethods(Method[] arg) {
2926 Method[] out = new Method[arg.length];
2927 ReflectionFactory fact = getReflectionFactory();
2928 for (int i = 0; i < arg.length; i++) {
2929 out[i] = fact.copyMethod(arg[i]);
2930 }
2931 return out;
2932 }
2933
2934 private static <U> Constructor<U>[] copyConstructors(Constructor<U>[] arg) {
2935 Constructor<U>[] out = arg.clone();
2936 ReflectionFactory fact = getReflectionFactory();
2937 for (int i = 0; i < out.length; i++) {
2938 out[i] = fact.copyConstructor(out[i]);
2939 }
2940 return out;
2941 }
2942
2943 private native Field[] getDeclaredFields0(boolean publicOnly);
2944 private native Method[] getDeclaredMethods0(boolean publicOnly);
2945 private native Constructor<T>[] getDeclaredConstructors0(boolean publicOnly);
2946 private native Class<?>[] getDeclaredClasses0();
2947
2948 private static String argumentTypesToString(Class<?>[] argTypes) {
2949 StringBuilder buf = new StringBuilder();
2950 buf.append("(");
2951 if (argTypes != null) {
2952 for (int i = 0; i < argTypes.length; i++) {
2953 if (i > 0) {
2954 buf.append(", ");
2955 }
2956 Class<?> c = argTypes[i];
2957 buf.append((c == null) ? "null" : c.getName());
2958 }
2959 }
2960 buf.append(")");
2961 return buf.toString();
2962 }
2963
2964 /** use serialVersionUID from JDK 1.1 for interoperability */
2965 private static final long serialVersionUID = 3206093459760846163L;
2966
2967
2968 /**
2969 * Class Class is special cased within the Serialization Stream Protocol.
2970 *
2971 * A Class instance is written initially into an ObjectOutputStream in the
2972 * following format:
2973 * <pre>
2974 * {@code TC_CLASS} ClassDescriptor
2975 * A ClassDescriptor is a special cased serialization of
2976 * a {@code java.io.ObjectStreamClass} instance.
2977 * </pre>
2978 * A new handle is generated for the initial time the class descriptor
2979 * is written into the stream. Future references to the class descriptor
2980 * are written as references to the initial class descriptor instance.
2981 *
2982 * @see java.io.ObjectStreamClass
2983 */
2984 private static final ObjectStreamField[] serialPersistentFields =
2985 new ObjectStreamField[0];
2986
2987
2988 /**
2989 * Returns the assertion status that would be assigned to this
2990 * class if it were to be initialized at the time this method is invoked.
2991 * If this class has had its assertion status set, the most recent
2992 * setting will be returned; otherwise, if any package default assertion
2993 * status pertains to this class, the most recent setting for the most
2994 * specific pertinent package default assertion status is returned;
2995 * otherwise, if this class is not a system class (i.e., it has a
2996 * class loader) its class loader's default assertion status is returned;
2997 * otherwise, the system class default assertion status is returned.
2998 * <p>
2999 * Few programmers will have any need for this method; it is provided
3000 * for the benefit of the JRE itself. (It allows a class to determine at
3001 * the time that it is initialized whether assertions should be enabled.)
3002 * Note that this method is not guaranteed to return the actual
3003 * assertion status that was (or will be) associated with the specified
3004 * class when it was (or will be) initialized.
3005 *
3006 * @return the desired assertion status of the specified class.
3007 * @see java.lang.ClassLoader#setClassAssertionStatus
3008 * @see java.lang.ClassLoader#setPackageAssertionStatus
3009 * @see java.lang.ClassLoader#setDefaultAssertionStatus
3010 * @since 1.4
3011 */
3012 public boolean desiredAssertionStatus() {
3013 ClassLoader loader = getClassLoader();
3014 // If the loader is null this is a system class, so ask the VM
3015 if (loader == null)
3016 return desiredAssertionStatus0(this);
3017
3018 // If the classloader has been initialized with the assertion
3019 // directives, ask it. Otherwise, ask the VM.
3020 synchronized(loader.assertionLock) {
3021 if (loader.classAssertionStatus != null) {
3022 return loader.desiredAssertionStatus(getName());
3023 }
3024 }
3025 return desiredAssertionStatus0(this);
3026 }
3027
3028 // Retrieves the desired assertion status of this class from the VM
3029 private static native boolean desiredAssertionStatus0(Class<?> clazz);
3030
3031 /**
3032 * Returns true if and only if this class was declared as an enum in the
3033 * source code.
3034 *
3035 * @return true if and only if this class was declared as an enum in the
3036 * source code
3037 * @since 1.5
3038 */
3039 public boolean isEnum() {
3040 // An enum must both directly extend java.lang.Enum and have
3041 // the ENUM bit set; classes for specialized enum constants
3042 // don't do the former.
3043 return (this.getModifiers() & ENUM) != 0 &&
3044 this.getSuperclass() == java.lang.Enum.class;
3045 }
3046
3047 // Fetches the factory for reflective objects
3048 private static ReflectionFactory getReflectionFactory() {
3049 if (reflectionFactory == null) {
3050 reflectionFactory =
3051 java.security.AccessController.doPrivileged
3052 (new sun.reflect.ReflectionFactory.GetReflectionFactoryAction());
3053 }
3054 return reflectionFactory;
3055 }
3056 private static ReflectionFactory reflectionFactory;
3057
3058 // To be able to query system properties as soon as they're available
3059 private static boolean initted = false;
3060 private static void checkInitted() {
3061 if (initted) return;
3062 AccessController.doPrivileged(new PrivilegedAction<Void>() {
3063 public Void run() {
3064 // Tests to ensure the system properties table is fully
3065 // initialized. This is needed because reflection code is
3066 // called very early in the initialization process (before
3067 // command-line arguments have been parsed and therefore
3068 // these user-settable properties installed.) We assume that
3069 // if System.out is non-null then the System class has been
3070 // fully initialized and that the bulk of the startup code
3071 // has been run.
3072
3073 if (System.out == null) {
3074 // java.lang.System not yet fully initialized
3075 return null;
3076 }
3077
3078 // Doesn't use Boolean.getBoolean to avoid class init.
3079 String val =
3080 System.getProperty("sun.reflect.noCaches");
3081 if (val != null && val.equals("true")) {
3082 useCaches = false;
3083 }
3084
3085 initted = true;
3086 return null;
3087 }
3088 });
3089 }
3090
3091 /**
3092 * Returns the elements of this enum class or null if this
3093 * Class object does not represent an enum type.
3094 *
3095 * @return an array containing the values comprising the enum class
3096 * represented by this Class object in the order they're
3097 * declared, or null if this Class object does not
3098 * represent an enum type
3099 * @since 1.5
3100 */
3101 public T[] getEnumConstants() {
3102 T[] values = getEnumConstantsShared();
3103 return (values != null) ? values.clone() : null;
3104 }
3105
3106 /**
3107 * Returns the elements of this enum class or null if this
3108 * Class object does not represent an enum type;
3109 * identical to getEnumConstants except that the result is
3110 * uncloned, cached, and shared by all callers.
3111 */
3112 T[] getEnumConstantsShared() {
3113 if (enumConstants == null) {
3114 if (!isEnum()) return null;
3115 try {
3116 final Method values = getMethod("values");
3117 java.security.AccessController.doPrivileged(
3118 new java.security.PrivilegedAction<Void>() {
3119 public Void run() {
3120 values.setAccessible(true);
3121 return null;
3122 }
3123 });
3124 @SuppressWarnings("unchecked")
3125 T[] temporaryConstants = (T[])values.invoke(null);
3126 enumConstants = temporaryConstants;
3127 }
3128 // These can happen when users concoct enum-like classes
3129 // that don't comply with the enum spec.
3130 catch (InvocationTargetException | NoSuchMethodException |
3131 IllegalAccessException ex) { return null; }
3132 }
3133 return enumConstants;
3134 }
3135 private volatile transient T[] enumConstants = null;
3136
3137 /**
3138 * Returns a map from simple name to enum constant. This package-private
3139 * method is used internally by Enum to implement
3140 * {@code public static <T extends Enum<T>> T valueOf(Class<T>, String)}
3141 * efficiently. Note that the map is returned by this method is
3142 * created lazily on first use. Typically it won't ever get created.
3143 */
3144 Map<String, T> enumConstantDirectory() {
3145 if (enumConstantDirectory == null) {
3146 T[] universe = getEnumConstantsShared();
3147 if (universe == null)
3148 throw new IllegalArgumentException(
3149 getName() + " is not an enum type");
3150 Map<String, T> m = new HashMap<>(2 * universe.length);
3151 for (T constant : universe)
3152 m.put(((Enum<?>)constant).name(), constant);
3153 enumConstantDirectory = m;
3154 }
3155 return enumConstantDirectory;
3156 }
3157 private volatile transient Map<String, T> enumConstantDirectory = null;
3158
3159 /**
3160 * Casts an object to the class or interface represented
3161 * by this {@code Class} object.
3162 *
3163 * @param obj the object to be cast
3164 * @return the object after casting, or null if obj is null
3165 *
3166 * @throws ClassCastException if the object is not
3167 * null and is not assignable to the type T.
3168 *
3169 * @since 1.5
3170 */
3171 @SuppressWarnings("unchecked")
3172 public T cast(Object obj) {
3173 if (obj != null && !isInstance(obj))
3174 throw new ClassCastException(cannotCastMsg(obj));
3175 return (T) obj;
3176 }
3177
3178 private String cannotCastMsg(Object obj) {
3179 return "Cannot cast " + obj.getClass().getName() + " to " + getName();
3180 }
3181
3182 /**
3183 * Casts this {@code Class} object to represent a subclass of the class
3184 * represented by the specified class object. Checks that the cast
3185 * is valid, and throws a {@code ClassCastException} if it is not. If
3186 * this method succeeds, it always returns a reference to this class object.
3187 *
3188 * <p>This method is useful when a client needs to "narrow" the type of
3189 * a {@code Class} object to pass it to an API that restricts the
3190 * {@code Class} objects that it is willing to accept. A cast would
3191 * generate a compile-time warning, as the correctness of the cast
3192 * could not be checked at runtime (because generic types are implemented
3193 * by erasure).
3194 *
3195 * @return this {@code Class} object, cast to represent a subclass of
3196 * the specified class object.
3197 * @throws ClassCastException if this {@code Class} object does not
3198 * represent a subclass of the specified class (here "subclass" includes
3199 * the class itself).
3200 * @since 1.5
3201 */
3202 @SuppressWarnings("unchecked")
3203 public <U> Class<? extends U> asSubclass(Class<U> clazz) {
3204 if (clazz.isAssignableFrom(this))
3205 return (Class<? extends U>) this;
3206 else
3207 throw new ClassCastException(this.toString());
3208 }
3209
3210 /**
3211 * @throws NullPointerException {@inheritDoc}
3212 * @since 1.5
3213 */
3214 @SuppressWarnings("unchecked")
3215 public <A extends Annotation> A getAnnotation(Class<A> annotationClass) {
3216 Objects.requireNonNull(annotationClass);
3217
3218 initAnnotationsIfNecessary();
3219 return (A) annotations.get(annotationClass);
3220 }
3221
3222 /**
3223 * {@inheritDoc}
3224 * @throws NullPointerException {@inheritDoc}
3225 * @since 1.5
3226 */
3227 @Override
3228 public boolean isAnnotationPresent(Class<? extends Annotation> annotationClass) {
3229 return GenericDeclaration.super.isAnnotationPresent(annotationClass);
3230 }
3231
3232 /**
3233 * @throws NullPointerException {@inheritDoc}
3234 * @since 1.8
3235 */
3236 @Override
3237 public <A extends Annotation> A[] getAnnotationsByType(Class<A> annotationClass) {
3238 Objects.requireNonNull(annotationClass);
3239
3240 initAnnotationsIfNecessary();
3241 return AnnotationSupport.getMultipleAnnotations(annotations, annotationClass);
3242 }
3243
3244 /**
3245 * @since 1.5
3246 */
3247 public Annotation[] getAnnotations() {
3248 initAnnotationsIfNecessary();
3249 return AnnotationParser.toArray(annotations);
3250 }
3251
3252 /**
3253 * @throws NullPointerException {@inheritDoc}
3254 * @since 1.8
3255 */
3256 @Override
3257 @SuppressWarnings("unchecked")
3258 public <A extends Annotation> A getDeclaredAnnotation(Class<A> annotationClass) {
3259 Objects.requireNonNull(annotationClass);
3260
3261 initAnnotationsIfNecessary();
3262 return (A) declaredAnnotations.get(annotationClass);
3263 }
3264
3265 /**
3266 * @throws NullPointerException {@inheritDoc}
3267 * @since 1.8
3268 */
3269 @Override
3270 public <A extends Annotation> A[] getDeclaredAnnotationsByType(Class<A> annotationClass) {
3271 Objects.requireNonNull(annotationClass);
3272
3273 initAnnotationsIfNecessary();
3274 return AnnotationSupport.getMultipleAnnotations(declaredAnnotations, annotationClass);
3275 }
3276
3277 /**
3278 * @since 1.5
3279 */
3280 public Annotation[] getDeclaredAnnotations() {
3281 initAnnotationsIfNecessary();
3282 return AnnotationParser.toArray(declaredAnnotations);
3283 }
3284
3285 // Annotations cache
3286 private transient Map<Class<? extends Annotation>, Annotation> annotations;
3287 private transient Map<Class<? extends Annotation>, Annotation> declaredAnnotations;
3288 // Value of classRedefinedCount when we last cleared the cached annotations and declaredAnnotations fields
3289 private transient int lastAnnotationsRedefinedCount = 0;
3290
3291 // Clears cached values that might possibly have been obsoleted by
3292 // a class redefinition.
3293 private void clearAnnotationCachesOnClassRedefinition() {
3294 if (lastAnnotationsRedefinedCount != classRedefinedCount) {
3295 annotations = declaredAnnotations = null;
3296 lastAnnotationsRedefinedCount = classRedefinedCount;
3297 }
3298 }
3299
3300 private synchronized void initAnnotationsIfNecessary() {
3301 clearAnnotationCachesOnClassRedefinition();
3302 if (annotations != null)
3303 return;
3304 declaredAnnotations = AnnotationParser.parseAnnotations(
3305 getRawAnnotations(), getConstantPool(), this);
3306 Class<?> superClass = getSuperclass();
3307 if (superClass == null) {
3308 annotations = declaredAnnotations;
3309 } else {
3310 annotations = new HashMap<>();
3311 superClass.initAnnotationsIfNecessary();
3312 for (Map.Entry<Class<? extends Annotation>, Annotation> e : superClass.annotations.entrySet()) {
3313 Class<? extends Annotation> annotationClass = e.getKey();
3314 if (AnnotationType.getInstance(annotationClass).isInherited())
3315 annotations.put(annotationClass, e.getValue());
3316 }
3317 annotations.putAll(declaredAnnotations);
3318 }
3319 }
3320
3321 // Annotation types cache their internal (AnnotationType) form
3322
3323 private AnnotationType annotationType;
3324
3325 void setAnnotationType(AnnotationType type) {
3326 annotationType = type;
3327 }
3328
3329 AnnotationType getAnnotationType() {
3330 return annotationType;
3331 }
3332
3333 /* Backing store of user-defined values pertaining to this class.
3334 * Maintained by the ClassValue class.
3335 */
3336 transient ClassValue.ClassValueMap classValueMap;
3337
3338 /**
3339 * Returns an AnnotatedType object that represents the use of a type to specify
3340 * the superclass of the entity represented by this Class. (The <em>use</em> of type
3341 * Foo to specify the superclass in '... extends Foo' is distinct from the
3342 * <em>declaration</em> of type Foo.)
3343 *
3344 * If this Class represents a class type whose declaration does not explicitly
3345 * indicate an annotated superclass, the return value is null.
3346 *
3347 * If this Class represents either the Object class, an interface type, an
3348 * array type, a primitive type, or void, the return value is null.
3349 *
3350 * @since 1.8
3351 */
3352 public AnnotatedType getAnnotatedSuperclass() {
3353 return TypeAnnotationParser.buildAnnotatedSuperclass(getRawTypeAnnotations(), getConstantPool(), this);
3354 }
3355
3356 /**
3357 * Returns an array of AnnotatedType objects that represent the use of types to
3358 * specify superinterfaces of the entity represented by this Class. (The <em>use</em>
3359 * of type Foo to specify a superinterface in '... implements Foo' is
3360 * distinct from the <em>declaration</em> of type Foo.)
3361 *
3362 * If this Class represents a class, the return value is an array
3363 * containing objects representing the uses of interface types to specify
3364 * interfaces implemented by the class. The order of the objects in the
3365 * array corresponds to the order of the interface types used in the
3366 * 'implements' clause of the declaration of this Class.
3367 *
3368 * If this Class represents an interface, the return value is an array
3369 * containing objects representing the uses of interface types to specify
3370 * interfaces directly extended by the interface. The order of the objects in
3371 * the array corresponds to the order of the interface types used in the
3372 * 'extends' clause of the declaration of this Class.
3373 *
3374 * If this Class represents a class or interface whose declaration does not
3375 * explicitly indicate any annotated superinterfaces, the return value is an
3376 * array of length 0.
3377 *
3378 * If this Class represents either the Object class, an array type, a
3379 * primitive type, or void, the return value is an array of length 0.
3380 *
3381 * @since 1.8
3382 */
3383 public AnnotatedType[] getAnnotatedInterfaces() {
3384 return TypeAnnotationParser.buildAnnotatedInterfaces(getRawTypeAnnotations(), getConstantPool(), this);
3385 }
3386 }