1 /*
   2  * Copyright (c) 1996, 2016, 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.reflect;
  27 
  28 import jdk.internal.HotSpotIntrinsicCandidate;
  29 import jdk.internal.misc.SharedSecrets;
  30 import jdk.internal.reflect.CallerSensitive;
  31 import jdk.internal.reflect.MethodAccessor;
  32 import jdk.internal.reflect.Reflection;
  33 import jdk.internal.vm.annotation.ForceInline;
  34 import sun.reflect.annotation.ExceptionProxy;
  35 import sun.reflect.annotation.TypeNotPresentExceptionProxy;
  36 import sun.reflect.generics.repository.MethodRepository;
  37 import sun.reflect.generics.factory.CoreReflectionFactory;
  38 import sun.reflect.generics.factory.GenericsFactory;
  39 import sun.reflect.generics.scope.MethodScope;
  40 import sun.reflect.annotation.AnnotationType;
  41 import sun.reflect.annotation.AnnotationParser;
  42 import java.lang.annotation.Annotation;
  43 import java.lang.annotation.AnnotationFormatError;
  44 import java.nio.ByteBuffer;
  45 
  46 /**
  47  * A {@code Method} provides information about, and access to, a single method
  48  * on a class or interface.  The reflected method may be a class method
  49  * or an instance method (including an abstract method).
  50  *
  51  * <p>A {@code Method} permits widening conversions to occur when matching the
  52  * actual parameters to invoke with the underlying method's formal
  53  * parameters, but it throws an {@code IllegalArgumentException} if a
  54  * narrowing conversion would occur.
  55  *
  56  * @see Member
  57  * @see java.lang.Class
  58  * @see java.lang.Class#getMethods()
  59  * @see java.lang.Class#getMethod(String, Class[])
  60  * @see java.lang.Class#getDeclaredMethods()
  61  * @see java.lang.Class#getDeclaredMethod(String, Class[])
  62  *
  63  * @author Kenneth Russell
  64  * @author Nakul Saraiya
  65  */
  66 public final class Method extends Executable {
  67     private Class<?>            clazz;
  68     private int                 slot;
  69     // This is guaranteed to be interned by the VM in the 1.4
  70     // reflection implementation
  71     private String              name;
  72     private Class<?>            returnType;
  73     private Class<?>[]          parameterTypes;
  74     private Class<?>[]          exceptionTypes;
  75     private int                 modifiers;
  76     // Generics and annotations support
  77     private transient String              signature;
  78     // generic info repository; lazily initialized
  79     private transient MethodRepository genericInfo;
  80     private byte[]              annotations;
  81     private byte[]              parameterAnnotations;
  82     private byte[]              annotationDefault;
  83     private volatile MethodAccessor methodAccessor;
  84     // For sharing of MethodAccessors. This branching structure is
  85     // currently only two levels deep (i.e., one root Method and
  86     // potentially many Method objects pointing to it.)
  87     //
  88     // If this branching structure would ever contain cycles, deadlocks can
  89     // occur in annotation code.
  90     private Method              root;
  91 
  92     // Generics infrastructure
  93     private String getGenericSignature() {return signature;}
  94 
  95     // Accessor for factory
  96     private GenericsFactory getFactory() {
  97         // create scope and factory
  98         return CoreReflectionFactory.make(this, MethodScope.make(this));
  99     }
 100 
 101     // Accessor for generic info repository
 102     @Override
 103     MethodRepository getGenericInfo() {
 104         // lazily initialize repository if necessary
 105         if (genericInfo == null) {
 106             // create and cache generic info repository
 107             genericInfo = MethodRepository.make(getGenericSignature(),
 108                                                 getFactory());
 109         }
 110         return genericInfo; //return cached repository
 111     }
 112 
 113     /**
 114      * Package-private constructor used by ReflectAccess to enable
 115      * instantiation of these objects in Java code from the java.lang
 116      * package via sun.reflect.LangReflectAccess.
 117      */
 118     Method(Class<?> declaringClass,
 119            String name,
 120            Class<?>[] parameterTypes,
 121            Class<?> returnType,
 122            Class<?>[] checkedExceptions,
 123            int modifiers,
 124            int slot,
 125            String signature,
 126            byte[] annotations,
 127            byte[] parameterAnnotations,
 128            byte[] annotationDefault) {
 129         this.clazz = declaringClass;
 130         this.name = name;
 131         this.parameterTypes = parameterTypes;
 132         this.returnType = returnType;
 133         this.exceptionTypes = checkedExceptions;
 134         this.modifiers = modifiers;
 135         this.slot = slot;
 136         this.signature = signature;
 137         this.annotations = annotations;
 138         this.parameterAnnotations = parameterAnnotations;
 139         this.annotationDefault = annotationDefault;
 140     }
 141 
 142     /**
 143      * Package-private routine (exposed to java.lang.Class via
 144      * ReflectAccess) which returns a copy of this Method. The copy's
 145      * "root" field points to this Method.
 146      */
 147     Method copy() {
 148         // This routine enables sharing of MethodAccessor objects
 149         // among Method objects which refer to the same underlying
 150         // method in the VM. (All of this contortion is only necessary
 151         // because of the "accessibility" bit in AccessibleObject,
 152         // which implicitly requires that new java.lang.reflect
 153         // objects be fabricated for each reflective call on Class
 154         // objects.)
 155         if (this.root != null)
 156             throw new IllegalArgumentException("Can not copy a non-root Method");
 157 
 158         Method res = new Method(clazz, name, parameterTypes, returnType,
 159                                 exceptionTypes, modifiers, slot, signature,
 160                                 annotations, parameterAnnotations, annotationDefault);
 161         res.root = this;
 162         // Might as well eagerly propagate this if already present
 163         res.methodAccessor = methodAccessor;
 164         return res;
 165     }
 166 
 167     /**
 168      * Make a copy of a leaf method.
 169      */
 170     Method leafCopy() {
 171         if (this.root == null)
 172             throw new IllegalArgumentException("Can only leafCopy a non-root Method");
 173 
 174         Method res = new Method(clazz, name, parameterTypes, returnType,
 175                 exceptionTypes, modifiers, slot, signature,
 176                 annotations, parameterAnnotations, annotationDefault);
 177         res.root = root;
 178         res.methodAccessor = methodAccessor;
 179         return res;
 180     }
 181 
 182     @Override
 183     @CallerSensitive
 184     public void setAccessible(boolean flag) {
 185         AccessibleObject.checkPermission();
 186         if (flag) checkCanSetAccessible(Reflection.getCallerClass());
 187         setAccessible0(flag);
 188     }
 189 
 190     @Override
 191     void checkCanSetAccessible(Class<?> caller) {
 192         checkCanSetAccessible(caller, clazz);
 193     }
 194 
 195     /**
 196      * Used by Excecutable for annotation sharing.
 197      */
 198     @Override
 199     Executable getRoot() {
 200         return root;
 201     }
 202 
 203     @Override
 204     boolean hasGenericInformation() {
 205         return (getGenericSignature() != null);
 206     }
 207 
 208     @Override
 209     byte[] getAnnotationBytes() {
 210         return annotations;
 211     }
 212 
 213     /**
 214      * {@inheritDoc}
 215      */
 216     @Override
 217     public Class<?> getDeclaringClass() {
 218         return clazz;
 219     }
 220 
 221     /**
 222      * Returns the name of the method represented by this {@code Method}
 223      * object, as a {@code String}.
 224      */
 225     @Override
 226     public String getName() {
 227         return name;
 228     }
 229 
 230     /**
 231      * {@inheritDoc}
 232      */
 233     @Override
 234     public int getModifiers() {
 235         return modifiers;
 236     }
 237 
 238     /**
 239      * {@inheritDoc}
 240      * @throws GenericSignatureFormatError {@inheritDoc}
 241      * @since 1.5
 242      */
 243     @Override
 244     @SuppressWarnings({"rawtypes", "unchecked"})
 245     public TypeVariable<Method>[] getTypeParameters() {
 246         if (getGenericSignature() != null)
 247             return (TypeVariable<Method>[])getGenericInfo().getTypeParameters();
 248         else
 249             return (TypeVariable<Method>[])new TypeVariable[0];
 250     }
 251 
 252     /**
 253      * Returns a {@code Class} object that represents the formal return type
 254      * of the method represented by this {@code Method} object.
 255      *
 256      * @return the return type for the method this object represents
 257      */
 258     public Class<?> getReturnType() {
 259         return returnType;
 260     }
 261 
 262     /**
 263      * Returns a {@code Type} object that represents the formal return
 264      * type of the method represented by this {@code Method} object.
 265      *
 266      * <p>If the return type is a parameterized type,
 267      * the {@code Type} object returned must accurately reflect
 268      * the actual type parameters used in the source code.
 269      *
 270      * <p>If the return type is a type variable or a parameterized type, it
 271      * is created. Otherwise, it is resolved.
 272      *
 273      * @return  a {@code Type} object that represents the formal return
 274      *     type of the underlying  method
 275      * @throws GenericSignatureFormatError
 276      *     if the generic method signature does not conform to the format
 277      *     specified in
 278      *     <cite>The Java&trade; Virtual Machine Specification</cite>
 279      * @throws TypeNotPresentException if the underlying method's
 280      *     return type refers to a non-existent type declaration
 281      * @throws MalformedParameterizedTypeException if the
 282      *     underlying method's return typed refers to a parameterized
 283      *     type that cannot be instantiated for any reason
 284      * @since 1.5
 285      */
 286     public Type getGenericReturnType() {
 287       if (getGenericSignature() != null) {
 288         return getGenericInfo().getReturnType();
 289       } else { return getReturnType();}
 290     }
 291 
 292     /**
 293      * {@inheritDoc}
 294      */
 295     @Override
 296     public Class<?>[] getParameterTypes() {
 297         return parameterTypes.clone();
 298     }
 299 
 300     /**
 301      * {@inheritDoc}
 302      * @since 1.8
 303      */
 304     public int getParameterCount() { return parameterTypes.length; }
 305 
 306 
 307     /**
 308      * {@inheritDoc}
 309      * @throws GenericSignatureFormatError {@inheritDoc}
 310      * @throws TypeNotPresentException {@inheritDoc}
 311      * @throws MalformedParameterizedTypeException {@inheritDoc}
 312      * @since 1.5
 313      */
 314     @Override
 315     public Type[] getGenericParameterTypes() {
 316         return super.getGenericParameterTypes();
 317     }
 318 
 319     /**
 320      * {@inheritDoc}
 321      */
 322     @Override
 323     public Class<?>[] getExceptionTypes() {
 324         return exceptionTypes.clone();
 325     }
 326 
 327     /**
 328      * {@inheritDoc}
 329      * @throws GenericSignatureFormatError {@inheritDoc}
 330      * @throws TypeNotPresentException {@inheritDoc}
 331      * @throws MalformedParameterizedTypeException {@inheritDoc}
 332      * @since 1.5
 333      */
 334     @Override
 335     public Type[] getGenericExceptionTypes() {
 336         return super.getGenericExceptionTypes();
 337     }
 338 
 339     /**
 340      * Compares this {@code Method} against the specified object.  Returns
 341      * true if the objects are the same.  Two {@code Methods} are the same if
 342      * they were declared by the same class and have the same name
 343      * and formal parameter types and return type.
 344      */
 345     public boolean equals(Object obj) {
 346         if (obj != null && obj instanceof Method) {
 347             Method other = (Method)obj;
 348             if ((getDeclaringClass() == other.getDeclaringClass())
 349                 && (getName() == other.getName())) {
 350                 if (!returnType.equals(other.getReturnType()))
 351                     return false;
 352                 return equalParamTypes(parameterTypes, other.parameterTypes);
 353             }
 354         }
 355         return false;
 356     }
 357 
 358     /**
 359      * Returns a hashcode for this {@code Method}.  The hashcode is computed
 360      * as the exclusive-or of the hashcodes for the underlying
 361      * method's declaring class name and the method's name.
 362      */
 363     public int hashCode() {
 364         return getDeclaringClass().getName().hashCode() ^ getName().hashCode();
 365     }
 366 
 367     /**
 368      * Returns a string describing this {@code Method}.  The string is
 369      * formatted as the method access modifiers, if any, followed by
 370      * the method return type, followed by a space, followed by the
 371      * class declaring the method, followed by a period, followed by
 372      * the method name, followed by a parenthesized, comma-separated
 373      * list of the method's formal parameter types. If the method
 374      * throws checked exceptions, the parameter list is followed by a
 375      * space, followed by the word throws followed by a
 376      * comma-separated list of the thrown exception types.
 377      * For example:
 378      * <pre>
 379      *    public boolean java.lang.Object.equals(java.lang.Object)
 380      * </pre>
 381      *
 382      * <p>The access modifiers are placed in canonical order as
 383      * specified by "The Java Language Specification".  This is
 384      * {@code public}, {@code protected} or {@code private} first,
 385      * and then other modifiers in the following order:
 386      * {@code abstract}, {@code default}, {@code static}, {@code final},
 387      * {@code synchronized}, {@code native}, {@code strictfp}.
 388      *
 389      * @return a string describing this {@code Method}
 390      *
 391      * @jls 8.4.3 Method Modifiers
 392      * @jls 9.4   Method Declarations
 393      * @jls 9.6.1 Annotation Type Elements
 394      */
 395     public String toString() {
 396         return sharedToString(Modifier.methodModifiers(),
 397                               isDefault(),
 398                               parameterTypes,
 399                               exceptionTypes);
 400     }
 401 
 402     @Override
 403     void specificToStringHeader(StringBuilder sb) {
 404         sb.append(getReturnType().getTypeName()).append(' ');
 405         sb.append(getDeclaringClass().getTypeName()).append('.');
 406         sb.append(getName());
 407     }
 408 
 409     /**
 410      * Returns a string describing this {@code Method}, including
 411      * type parameters.  The string is formatted as the method access
 412      * modifiers, if any, followed by an angle-bracketed
 413      * comma-separated list of the method's type parameters, if any,
 414      * followed by the method's generic return type, followed by a
 415      * space, followed by the class declaring the method, followed by
 416      * a period, followed by the method name, followed by a
 417      * parenthesized, comma-separated list of the method's generic
 418      * formal parameter types.
 419      *
 420      * If this method was declared to take a variable number of
 421      * arguments, instead of denoting the last parameter as
 422      * "<code><i>Type</i>[]</code>", it is denoted as
 423      * "<code><i>Type</i>...</code>".
 424      *
 425      * A space is used to separate access modifiers from one another
 426      * and from the type parameters or return type.  If there are no
 427      * type parameters, the type parameter list is elided; if the type
 428      * parameter list is present, a space separates the list from the
 429      * class name.  If the method is declared to throw exceptions, the
 430      * parameter list is followed by a space, followed by the word
 431      * throws followed by a comma-separated list of the generic thrown
 432      * exception types.
 433      *
 434      * <p>The access modifiers are placed in canonical order as
 435      * specified by "The Java Language Specification".  This is
 436      * {@code public}, {@code protected} or {@code private} first,
 437      * and then other modifiers in the following order:
 438      * {@code abstract}, {@code default}, {@code static}, {@code final},
 439      * {@code synchronized}, {@code native}, {@code strictfp}.
 440      *
 441      * @return a string describing this {@code Method},
 442      * include type parameters
 443      *
 444      * @since 1.5
 445      *
 446      * @jls 8.4.3 Method Modifiers
 447      * @jls 9.4   Method Declarations
 448      * @jls 9.6.1 Annotation Type Elements
 449      */
 450     @Override
 451     public String toGenericString() {
 452         return sharedToGenericString(Modifier.methodModifiers(), isDefault());
 453     }
 454 
 455     @Override
 456     void specificToGenericStringHeader(StringBuilder sb) {
 457         Type genRetType = getGenericReturnType();
 458         sb.append(genRetType.getTypeName()).append(' ');
 459         sb.append(getDeclaringClass().getTypeName()).append('.');
 460         sb.append(getName());
 461     }
 462 
 463     /**
 464      * Invokes the underlying method represented by this {@code Method}
 465      * object, on the specified object with the specified parameters.
 466      * Individual parameters are automatically unwrapped to match
 467      * primitive formal parameters, and both primitive and reference
 468      * parameters are subject to method invocation conversions as
 469      * necessary.
 470      *
 471      * <p>If the underlying method is static, then the specified {@code obj}
 472      * argument is ignored. It may be null.
 473      *
 474      * <p>If the number of formal parameters required by the underlying method is
 475      * 0, the supplied {@code args} array may be of length 0 or null.
 476      *
 477      * <p>If the underlying method is an instance method, it is invoked
 478      * using dynamic method lookup as documented in The Java Language
 479      * Specification, Second Edition, section 15.12.4.4; in particular,
 480      * overriding based on the runtime type of the target object will occur.
 481      *
 482      * <p>If the underlying method is static, the class that declared
 483      * the method is initialized if it has not already been initialized.
 484      *
 485      * <p>If the method completes normally, the value it returns is
 486      * returned to the caller of invoke; if the value has a primitive
 487      * type, it is first appropriately wrapped in an object. However,
 488      * if the value has the type of an array of a primitive type, the
 489      * elements of the array are <i>not</i> wrapped in objects; in
 490      * other words, an array of primitive type is returned.  If the
 491      * underlying method return type is void, the invocation returns
 492      * null.
 493      *
 494      * @param obj  the object the underlying method is invoked from
 495      * @param args the arguments used for the method call
 496      * @return the result of dispatching the method represented by
 497      * this object on {@code obj} with parameters
 498      * {@code args}
 499      *
 500      * @exception IllegalAccessException    if this {@code Method} object
 501      *              is enforcing Java language access control and the underlying
 502      *              method is inaccessible.
 503      * @exception IllegalArgumentException  if the method is an
 504      *              instance method and the specified object argument
 505      *              is not an instance of the class or interface
 506      *              declaring the underlying method (or of a subclass
 507      *              or implementor thereof); if the number of actual
 508      *              and formal parameters differ; if an unwrapping
 509      *              conversion for primitive arguments fails; or if,
 510      *              after possible unwrapping, a parameter value
 511      *              cannot be converted to the corresponding formal
 512      *              parameter type by a method invocation conversion.
 513      * @exception InvocationTargetException if the underlying method
 514      *              throws an exception.
 515      * @exception NullPointerException      if the specified object is null
 516      *              and the method is an instance method.
 517      * @exception ExceptionInInitializerError if the initialization
 518      * provoked by this method fails.
 519      */
 520     @CallerSensitive
 521     @ForceInline // to ensure Reflection.getCallerClass optimization
 522     @HotSpotIntrinsicCandidate
 523     public Object invoke(Object obj, Object... args)
 524         throws IllegalAccessException, IllegalArgumentException,
 525            InvocationTargetException
 526     {
 527         if (!override) {
 528             Class<?> caller = Reflection.getCallerClass();
 529             checkAccess(caller, clazz, obj, modifiers);
 530         }
 531         MethodAccessor ma = methodAccessor;             // read volatile
 532         if (ma == null) {
 533             ma = acquireMethodAccessor();
 534         }
 535         return ma.invoke(obj, args);
 536     }
 537 
 538     /**
 539      * Returns {@code true} if this method is a bridge
 540      * method; returns {@code false} otherwise.
 541      *
 542      * @return true if and only if this method is a bridge
 543      * method as defined by the Java Language Specification.
 544      * @since 1.5
 545      */
 546     public boolean isBridge() {
 547         return (getModifiers() & Modifier.BRIDGE) != 0;
 548     }
 549 
 550     /**
 551      * {@inheritDoc}
 552      * @since 1.5
 553      */
 554     @Override
 555     public boolean isVarArgs() {
 556         return super.isVarArgs();
 557     }
 558 
 559     /**
 560      * {@inheritDoc}
 561      * @jls 13.1 The Form of a Binary
 562      * @since 1.5
 563      */
 564     @Override
 565     public boolean isSynthetic() {
 566         return super.isSynthetic();
 567     }
 568 
 569     /**
 570      * Returns {@code true} if this method is a default
 571      * method; returns {@code false} otherwise.
 572      *
 573      * A default method is a public non-abstract instance method, that
 574      * is, a non-static method with a body, declared in an interface
 575      * type.
 576      *
 577      * @return true if and only if this method is a default
 578      * method as defined by the Java Language Specification.
 579      * @since 1.8
 580      */
 581     public boolean isDefault() {
 582         // Default methods are public non-abstract instance methods
 583         // declared in an interface.
 584         return ((getModifiers() & (Modifier.ABSTRACT | Modifier.PUBLIC | Modifier.STATIC)) ==
 585                 Modifier.PUBLIC) && getDeclaringClass().isInterface();
 586     }
 587 
 588     // NOTE that there is no synchronization used here. It is correct
 589     // (though not efficient) to generate more than one MethodAccessor
 590     // for a given Method. However, avoiding synchronization will
 591     // probably make the implementation more scalable.
 592     private MethodAccessor acquireMethodAccessor() {
 593         // First check to see if one has been created yet, and take it
 594         // if so
 595         MethodAccessor tmp = null;
 596         if (root != null) tmp = root.getMethodAccessor();
 597         if (tmp != null) {
 598             methodAccessor = tmp;
 599         } else {
 600             // Otherwise fabricate one and propagate it up to the root
 601             tmp = reflectionFactory.newMethodAccessor(this);
 602             setMethodAccessor(tmp);
 603         }
 604 
 605         return tmp;
 606     }
 607 
 608     // Returns MethodAccessor for this Method object, not looking up
 609     // the chain to the root
 610     MethodAccessor getMethodAccessor() {
 611         return methodAccessor;
 612     }
 613 
 614     // Sets the MethodAccessor for this Method object and
 615     // (recursively) its root
 616     void setMethodAccessor(MethodAccessor accessor) {
 617         methodAccessor = accessor;
 618         // Propagate up
 619         if (root != null) {
 620             root.setMethodAccessor(accessor);
 621         }
 622     }
 623 
 624     /**
 625      * Returns the default value for the annotation member represented by
 626      * this {@code Method} instance.  If the member is of a primitive type,
 627      * an instance of the corresponding wrapper type is returned. Returns
 628      * null if no default is associated with the member, or if the method
 629      * instance does not represent a declared member of an annotation type.
 630      *
 631      * @return the default value for the annotation member represented
 632      *     by this {@code Method} instance.
 633      * @throws TypeNotPresentException if the annotation is of type
 634      *     {@link Class} and no definition can be found for the
 635      *     default class value.
 636      * @since  1.5
 637      */
 638     public Object getDefaultValue() {
 639         if  (annotationDefault == null)
 640             return null;
 641         Class<?> memberType = AnnotationType.invocationHandlerReturnType(
 642             getReturnType());
 643         Object result = AnnotationParser.parseMemberValue(
 644             memberType, ByteBuffer.wrap(annotationDefault),
 645             SharedSecrets.getJavaLangAccess().
 646                 getConstantPool(getDeclaringClass()),
 647             getDeclaringClass());
 648         if (result instanceof ExceptionProxy) {
 649             if (result instanceof TypeNotPresentExceptionProxy) {
 650                 TypeNotPresentExceptionProxy proxy = (TypeNotPresentExceptionProxy)result;
 651                 throw new TypeNotPresentException(proxy.typeName(), proxy.getCause());
 652             }
 653             throw new AnnotationFormatError("Invalid default: " + this);
 654         }
 655         return result;
 656     }
 657 
 658     /**
 659      * {@inheritDoc}
 660      * @throws NullPointerException  {@inheritDoc}
 661      * @since 1.5
 662      */
 663     public <T extends Annotation> T getAnnotation(Class<T> annotationClass) {
 664         return super.getAnnotation(annotationClass);
 665     }
 666 
 667     /**
 668      * {@inheritDoc}
 669      * @since 1.5
 670      */
 671     public Annotation[] getDeclaredAnnotations()  {
 672         return super.getDeclaredAnnotations();
 673     }
 674 
 675     /**
 676      * {@inheritDoc}
 677      * @since 1.5
 678      */
 679     @Override
 680     public Annotation[][] getParameterAnnotations() {
 681         return sharedGetParameterAnnotations(parameterTypes, parameterAnnotations);
 682     }
 683 
 684     /**
 685      * {@inheritDoc}
 686      * @since 1.8
 687      */
 688     @Override
 689     public AnnotatedType getAnnotatedReturnType() {
 690         return getAnnotatedReturnType0(getGenericReturnType());
 691     }
 692 
 693     @Override
 694     void handleParameterNumberMismatch(int resultLength, int numParameters) {
 695         throw new AnnotationFormatError("Parameter annotations don't match number of parameters");
 696     }
 697 }