113 * {@code getAnnotation(annotationClass) != null}
114 *
115 * <p>The body of the default method is specified to be the code
116 * above.
117 *
118 * @param annotationClass the Class object corresponding to the
119 * annotation type
120 * @return true if an annotation for the specified annotation
121 * type is present on this element, else false
122 * @throws NullPointerException if the given annotation class is null
123 * @since 1.5
124 */
125 default boolean isAnnotationPresent(Class<? extends Annotation> annotationClass) {
126 return getAnnotation(annotationClass) != null;
127 }
128
129 /**
130 * Returns this element's annotation for the specified type if
131 * such an annotation is present, else null.
132 *
133 * @param annotationClass the Class object corresponding to the
134 * annotation type
135 * @return this element's annotation for the specified annotation type if
136 * present on this element, else null
137 * @throws NullPointerException if the given annotation class is null
138 * @since 1.5
139 */
140 <T extends Annotation> T getAnnotation(Class<T> annotationClass);
141
142 /**
143 * Returns annotations that are <em>present</em> on this element.
144 *
145 * If there are no annotations <em>present</em> on this element, the return
146 * value is an array of length 0.
147 *
148 * The difference between this method and {@link #getAnnotation(Class)}
149 * is that this method detects if its argument is a <em>repeatable
150 * annotation type</em> (JLS 9.6), and if so, attempts to find one or
151 * more annotations of that type by "looking through" a container
152 * annotation.
153 *
154 * The caller of this method is free to modify the returned array; it will
155 * have no effect on the arrays returned to other callers.
156 *
157 * @param annotationClass the Class object corresponding to the
158 * annotation type
159 * @return all this element's annotations for the specified annotation type if
160 * present on this element, else an array of length zero
161 * @throws NullPointerException if the given annotation class is null
162 * @since 1.8
163 */
164 <T extends Annotation> T[] getAnnotationsByType(Class<T> annotationClass);
165
166 /**
167 * Returns annotations that are <em>present</em> on this element.
168 *
169 * If there are no annotations <em>present</em> on this element, the return
170 * value is an array of length 0.
171 *
172 * The caller of this method is free to modify the returned array; it will
173 * have no effect on the arrays returned to other callers.
174 *
175 * @return annotations present on this element
176 * @since 1.5
177 */
178 Annotation[] getAnnotations();
179
180 /**
181 * Returns this element's annotation for the specified type if
182 * such an annotation is present, else null.
183 *
184 * This method ignores inherited annotations. (Returns null if no
185 * annotations are directly present on this element.)
186 *
187 * @param annotationClass the Class object corresponding to the
188 * annotation type
189 * @return this element's annotation for the specified annotation type if
190 * present on this element, else null
191 * @throws NullPointerException if the given annotation class is null
192 * @since 1.8
193 */
194 <T extends Annotation> T getDeclaredAnnotation(Class<T> annotationClass);
195
196 /**
197 * Returns annotations that are <em>directly present</em> on this element.
198 * This method ignores inherited annotations.
199 *
200 * If there are no annotations <em>directly present</em> on this element,
201 * the return value is an array of length 0.
202 *
203 * The difference between this method and {@link
204 * #getDeclaredAnnotation(Class)} is that this method detects if its
205 * argument is a <em>repeatable annotation type</em> (JLS 9.6), and if so,
206 * attempts to find one or more annotations of that type by "looking
207 * through" a container annotation.
208 *
209 * The caller of this method is free to modify the returned array; it will
210 * have no effect on the arrays returned to other callers.
211 *
212 * @param annotationClass the Class object corresponding to the
213 * annotation type
214 * @return all this element's annotations for the specified annotation type if
215 * present on this element, else an array of length zero
216 * @throws NullPointerException if the given annotation class is null
217 * @since 1.8
218 */
219 <T extends Annotation> T[] getDeclaredAnnotationsByType(Class<T> annotationClass);
220
221 /**
222 * Returns annotations that are <em>directly present</em> on this element.
223 * This method ignores inherited annotations.
224 *
225 * If there are no annotations <em>directly present</em> on this element,
226 * the return value is an array of length 0.
227 *
228 * The caller of this method is free to modify the returned array; it will
229 * have no effect on the arrays returned to other callers.
230 *
231 * @return annotations directly present on this element
|
113 * {@code getAnnotation(annotationClass) != null}
114 *
115 * <p>The body of the default method is specified to be the code
116 * above.
117 *
118 * @param annotationClass the Class object corresponding to the
119 * annotation type
120 * @return true if an annotation for the specified annotation
121 * type is present on this element, else false
122 * @throws NullPointerException if the given annotation class is null
123 * @since 1.5
124 */
125 default boolean isAnnotationPresent(Class<? extends Annotation> annotationClass) {
126 return getAnnotation(annotationClass) != null;
127 }
128
129 /**
130 * Returns this element's annotation for the specified type if
131 * such an annotation is present, else null.
132 *
133 * @param <T> the type of the annotation to query for and return if present
134 * @param annotationClass the Class object corresponding to the
135 * annotation type
136 * @return this element's annotation for the specified annotation type if
137 * present on this element, else null
138 * @throws NullPointerException if the given annotation class is null
139 * @since 1.5
140 */
141 <T extends Annotation> T getAnnotation(Class<T> annotationClass);
142
143 /**
144 * Returns annotations that are <em>present</em> on this element.
145 *
146 * If there are no annotations <em>present</em> on this element, the return
147 * value is an array of length 0.
148 *
149 * The difference between this method and {@link #getAnnotation(Class)}
150 * is that this method detects if its argument is a <em>repeatable
151 * annotation type</em> (JLS 9.6), and if so, attempts to find one or
152 * more annotations of that type by "looking through" a container
153 * annotation.
154 *
155 * The caller of this method is free to modify the returned array; it will
156 * have no effect on the arrays returned to other callers.
157 *
158 * @param <T> the type of the annotation to query for and return if present
159 * @param annotationClass the Class object corresponding to the
160 * annotation type
161 * @return all this element's annotations for the specified annotation type if
162 * present on this element, else an array of length zero
163 * @throws NullPointerException if the given annotation class is null
164 * @since 1.8
165 */
166 <T extends Annotation> T[] getAnnotationsByType(Class<T> annotationClass);
167
168 /**
169 * Returns annotations that are <em>present</em> on this element.
170 *
171 * If there are no annotations <em>present</em> on this element, the return
172 * value is an array of length 0.
173 *
174 * The caller of this method is free to modify the returned array; it will
175 * have no effect on the arrays returned to other callers.
176 *
177 * @return annotations present on this element
178 * @since 1.5
179 */
180 Annotation[] getAnnotations();
181
182 /**
183 * Returns this element's annotation for the specified type if
184 * such an annotation is present, else null.
185 *
186 * This method ignores inherited annotations. (Returns null if no
187 * annotations are directly present on this element.)
188 *
189 * @param <T> the type of the annotation to query for and return if present
190 * @param annotationClass the Class object corresponding to the
191 * annotation type
192 * @return this element's annotation for the specified annotation type if
193 * present on this element, else null
194 * @throws NullPointerException if the given annotation class is null
195 * @since 1.8
196 */
197 <T extends Annotation> T getDeclaredAnnotation(Class<T> annotationClass);
198
199 /**
200 * Returns annotations that are <em>directly present</em> on this element.
201 * This method ignores inherited annotations.
202 *
203 * If there are no annotations <em>directly present</em> on this element,
204 * the return value is an array of length 0.
205 *
206 * The difference between this method and {@link
207 * #getDeclaredAnnotation(Class)} is that this method detects if its
208 * argument is a <em>repeatable annotation type</em> (JLS 9.6), and if so,
209 * attempts to find one or more annotations of that type by "looking
210 * through" a container annotation.
211 *
212 * The caller of this method is free to modify the returned array; it will
213 * have no effect on the arrays returned to other callers.
214 *
215 * @param <T> the type of the annotation to query for and return
216 * if directly present
217 * @param annotationClass the Class object corresponding to the
218 * annotation type
219 * @return all this element's annotations for the specified annotation type if
220 * present on this element, else an array of length zero
221 * @throws NullPointerException if the given annotation class is null
222 * @since 1.8
223 */
224 <T extends Annotation> T[] getDeclaredAnnotationsByType(Class<T> annotationClass);
225
226 /**
227 * Returns annotations that are <em>directly present</em> on this element.
228 * This method ignores inherited annotations.
229 *
230 * If there are no annotations <em>directly present</em> on this element,
231 * the return value is an array of length 0.
232 *
233 * The caller of this method is free to modify the returned array; it will
234 * have no effect on the arrays returned to other callers.
235 *
236 * @return annotations directly present on this element
|