01 /*
02 * Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved.
03 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04 *
05 * This code is free software; you can redistribute it and/or modify it
06 * under the terms of the GNU General Public License version 2 only, as
07 * published by the Free Software Foundation. Sun designates this
08 * particular file as subject to the "Classpath" exception as provided
09 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 //Copyright Sun Microsystems Inc. 2004 - 2005.
27 package javax.annotation;
28
29 import java.lang.annotation.*;
30 import static java.lang.annotation.ElementType.*;
31 import static java.lang.annotation.RetentionPolicy.*;
32
33 /**
34 * The PostConstruct annotation is used on a method that needs to be executed
35 * after dependency injection is done to perform any initialization. This
36 * method MUST be invoked before the class is put into service. This
37 * annotation MUST be supported on all classes that support dependency
38 * injection. The method annotated with PostConstruct MUST be invoked even
39 * if the class does not request any resources to be injected. Only one
40 * method can be annotated with this annotation. The method on which the
41 * PostConstruct annotation is applied MUST fulfill all of the following
42 * criteria -
43 - The method MUST NOT have any parameters except in the case of EJB
44 * interceptors in which case it takes an InvocationC ontext object as
45 * defined by the EJB specification.
46 * - The return type of the method MUST be void.
47 * - The method MUST NOT throw a checked exception.
48 * - The method on which PostConstruct is applied MAY be public, protected,
49 * package private or private.
50 * - The method MUST NOT be static except for the application client.
51 * - The method MAY be final.
52 * - If the method throws an unchecked exception the class MUST NOT be put into
53 * service except in the case of EJBs where the EJB can handle exceptions and
54 * even recover from them.
55 * @since Common Annotations 1.0
56 * @see javax.annotation.PreDestroy
57 * @see javax.annotation.Resource
58 */
59 @Documented
60 @Retention(RUNTIME)
61 @Target(METHOD)
62 public @interface PostConstruct {
63 }
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