218 * href="http://java.sun.com/docs/books/jls/second_edition/html/j.title.doc.html"><em>The
219 * Java Language Specification, Second Edition</em></a> sections
220 * <a href="http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#21613">§8.1.1</a>,
221 * <a href="http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#78091">§8.3.1</a>,
222 * <a href="http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#78188">§8.4.3</a>,
223 * <a href="http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#42018">§8.8.3</a>, and
224 * <a href="http://java.sun.com/docs/books/jls/second_edition/html/interfaces.doc.html#235947">§9.1.1</a>.
225 * The full modifier ordering used by this method is:
226 * <blockquote> {@code
227 * public protected private abstract static final transient
228 * volatile synchronized native strictfp
229 * interface } </blockquote>
230 * The {@code interface} modifier discussed in this class is
231 * not a true modifier in the Java language and it appears after
232 * all other modifiers listed by this method. This method may
233 * return a string of modifiers that are not valid modifiers of a
234 * Java entity; in other words, no checking is done on the
235 * possible validity of the combination of modifiers represented
236 * by the input.
237 *
238 * @param mod a set of modifiers
239 * @return a string representation of the set of modifiers
240 * represented by {@code mod}
241 */
242 public static String toString(int mod) {
243 StringBuffer sb = new StringBuffer();
244 int len;
245
246 if ((mod & PUBLIC) != 0) sb.append("public ");
247 if ((mod & PROTECTED) != 0) sb.append("protected ");
248 if ((mod & PRIVATE) != 0) sb.append("private ");
249
250 /* Canonical order */
251 if ((mod & ABSTRACT) != 0) sb.append("abstract ");
252 if ((mod & STATIC) != 0) sb.append("static ");
253 if ((mod & FINAL) != 0) sb.append("final ");
254 if ((mod & TRANSIENT) != 0) sb.append("transient ");
255 if ((mod & VOLATILE) != 0) sb.append("volatile ");
256 if ((mod & SYNCHRONIZED) != 0) sb.append("synchronized ");
257 if ((mod & NATIVE) != 0) sb.append("native ");
336 public static final int ABSTRACT = 0x00000400;
337
338 /**
339 * The {@code int} value representing the {@code strictfp}
340 * modifier.
341 */
342 public static final int STRICT = 0x00000800;
343
344 // Bits not (yet) exposed in the public API either because they
345 // have different meanings for fields and methods and there is no
346 // way to distinguish between the two in this class, or because
347 // they are not Java programming language keywords
348 static final int BRIDGE = 0x00000040;
349 static final int VARARGS = 0x00000080;
350 static final int SYNTHETIC = 0x00001000;
351 static final int ANNOTATION= 0x00002000;
352 static final int ENUM = 0x00004000;
353 static boolean isSynthetic(int mod) {
354 return (mod & SYNTHETIC) != 0;
355 }
356 }
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218 * href="http://java.sun.com/docs/books/jls/second_edition/html/j.title.doc.html"><em>The
219 * Java Language Specification, Second Edition</em></a> sections
220 * <a href="http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#21613">§8.1.1</a>,
221 * <a href="http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#78091">§8.3.1</a>,
222 * <a href="http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#78188">§8.4.3</a>,
223 * <a href="http://java.sun.com/docs/books/jls/second_edition/html/classes.doc.html#42018">§8.8.3</a>, and
224 * <a href="http://java.sun.com/docs/books/jls/second_edition/html/interfaces.doc.html#235947">§9.1.1</a>.
225 * The full modifier ordering used by this method is:
226 * <blockquote> {@code
227 * public protected private abstract static final transient
228 * volatile synchronized native strictfp
229 * interface } </blockquote>
230 * The {@code interface} modifier discussed in this class is
231 * not a true modifier in the Java language and it appears after
232 * all other modifiers listed by this method. This method may
233 * return a string of modifiers that are not valid modifiers of a
234 * Java entity; in other words, no checking is done on the
235 * possible validity of the combination of modifiers represented
236 * by the input.
237 *
238 * Note that to perform such checking for a known kind of entity,
239 * such as a constructor or method, first AND the argument of
240 * {@code toString} with the appropriate mask from a method like
241 * {@link #constructorModifiers} or {@link #methodModifiers}.
242 *
243 * @param mod a set of modifiers
244 * @return a string representation of the set of modifiers
245 * represented by {@code mod}
246 */
247 public static String toString(int mod) {
248 StringBuffer sb = new StringBuffer();
249 int len;
250
251 if ((mod & PUBLIC) != 0) sb.append("public ");
252 if ((mod & PROTECTED) != 0) sb.append("protected ");
253 if ((mod & PRIVATE) != 0) sb.append("private ");
254
255 /* Canonical order */
256 if ((mod & ABSTRACT) != 0) sb.append("abstract ");
257 if ((mod & STATIC) != 0) sb.append("static ");
258 if ((mod & FINAL) != 0) sb.append("final ");
259 if ((mod & TRANSIENT) != 0) sb.append("transient ");
260 if ((mod & VOLATILE) != 0) sb.append("volatile ");
261 if ((mod & SYNCHRONIZED) != 0) sb.append("synchronized ");
262 if ((mod & NATIVE) != 0) sb.append("native ");
341 public static final int ABSTRACT = 0x00000400;
342
343 /**
344 * The {@code int} value representing the {@code strictfp}
345 * modifier.
346 */
347 public static final int STRICT = 0x00000800;
348
349 // Bits not (yet) exposed in the public API either because they
350 // have different meanings for fields and methods and there is no
351 // way to distinguish between the two in this class, or because
352 // they are not Java programming language keywords
353 static final int BRIDGE = 0x00000040;
354 static final int VARARGS = 0x00000080;
355 static final int SYNTHETIC = 0x00001000;
356 static final int ANNOTATION= 0x00002000;
357 static final int ENUM = 0x00004000;
358 static boolean isSynthetic(int mod) {
359 return (mod & SYNTHETIC) != 0;
360 }
361
362 /**
363 * See JLSv3 section 8.1.1.
364 */
365 private static final int CLASS_MODIFIERS =
366 Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE |
367 Modifier.ABSTRACT | Modifier.STATIC | Modifier.FINAL |
368 Modifier.STRICT;
369
370 /**
371 * See JLSv3 section 9.1.1.
372 */
373 private static final int INTERFACE_MODIFIERS =
374 Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE |
375 Modifier.ABSTRACT | Modifier.STATIC | Modifier.STRICT;
376
377
378 /**
379 * See JLSv3 section 8.8.3.
380 */
381 private static final int CONSTRUCTOR_MODIFIERS =
382 Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE;
383
384 /**
385 * See JLSv3 section 8.4.3.
386 */
387 private static final int METHOD_MODIFIERS =
388 Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE |
389 Modifier.ABSTRACT | Modifier.STATIC | Modifier.FINAL |
390 Modifier.SYNCHRONIZED | Modifier.NATIVE | Modifier.STRICT;
391
392 /**
393 * See JLSv3 section 8.3.1.
394 */
395 private static final int FIELD_MODIFIERS =
396 Modifier.PUBLIC | Modifier.PROTECTED | Modifier.PRIVATE |
397 Modifier.STATIC | Modifier.FINAL | Modifier.TRANSIENT |
398 Modifier.VOLATILE;
399
400 /**
401 * Return an {@code int} value OR-ing together the source language
402 * modifiers that can be applied to a class.
403 * @return an {@code int} value OR-ing together the source language
404 * modifiers that can be applied to a class.
405 *
406 * @jls3 8.1.1 Class Modifiers
407 * @since 1.7
408 */
409 public static int classModifiers() {
410 return CLASS_MODIFIERS;
411 }
412
413 /**
414 * Return an {@code int} value OR-ing together the source language
415 * modifiers that can be applied to an interface.
416 * @return an {@code int} value OR-ing together the source language
417 * modifiers that can be applied to an inteface.
418 *
419 * @jls3 9.1.1 Interface Modifiers
420 * @since 1.7
421 */
422 public static int interfaceModifiers() {
423 return INTERFACE_MODIFIERS;
424 }
425
426 /**
427 * Return an {@code int} value OR-ing together the source language
428 * modifiers that can be applied to a constructor.
429 * @return an {@code int} value OR-ing together the source language
430 * modifiers that can be applied to a constructor.
431 *
432 * @jls3 8.8.3 Constructor Modifiers
433 * @since 1.7
434 */
435 public static int constructorModifiers() {
436 return CONSTRUCTOR_MODIFIERS;
437 }
438
439 /**
440 * Return an {@code int} value OR-ing together the source language
441 * modifiers that can be applied to a method.
442 * @return an {@code int} value OR-ing together the source language
443 * modifiers that can be applied to a method.
444 *
445 * @jls3 8.4.3 Method Modifiers
446 * @since 1.7
447 */
448 public static int methodModifiers() {
449 return METHOD_MODIFIERS;
450 }
451
452
453 /**
454 * Return an {@code int} value OR-ing together the source language
455 * modifiers that can be applied to a field.
456 * @return an {@code int} value OR-ing together the source language
457 * modifiers that can be applied to a field.
458 *
459 * @jls3 8.3.1 Field Modifiers
460 * @since 1.7
461 */
462 public static int fieldModifiers() {
463 return FIELD_MODIFIERS;
464 }
465 }
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