/* * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.annotation; import java.lang.annotation.*; import static java.lang.annotation.ElementType.*; import static java.lang.annotation.RetentionPolicy.*; /** * The PostConstruct annotation is used on a method that needs to be executed * after dependency injection is done to perform any initialization. This * method MUST be invoked before the class is put into service. This * annotation MUST be supported on all classes that support dependency * injection. The method annotated with PostConstruct MUST be invoked even * if the class does not request any resources to be injected. Only one * method can be annotated with this annotation. The method on which the * PostConstruct annotation is applied MUST fulfill all of the following * criteria: * <ul> * <li>The method MUST NOT have any parameters except in the case of * interceptors in which case it takes an InvocationContext object as * defined by the Interceptors specification.</li> * <li>The method defined on an interceptor class MUST HAVE one of the * following signatures: * <p> * void <METHOD>(InvocationContext) * <p> * Object <METHOD>(InvocationContext) throws Exception * <p> * <i>Note: A PostConstruct interceptor method must not throw application * exceptions, but it may be declared to throw checked exceptions including * the java.lang.Exception if the same interceptor method interposes on * business or timeout methods in addition to lifecycle events. If a * PostConstruct interceptor method returns a value, it is ignored by * the container.</i> * </li> * <li>The method defined on a non-interceptor class MUST HAVE the * following signature: * <p> * void <METHOD>() * </li> * <li>The method on which PostConstruct is applied MAY be public, protected, * package private or private.</li> * <li>The method MUST NOT be static except for the application client.</li> * <li>The method MAY be final.</li> * <li>If the method throws an unchecked exception the class MUST NOT be put into * service except in the case of EJBs where the EJB can handle exceptions and * even recover from them.</li></ul> * * @see javax.annotation.PreDestroy * @see javax.annotation.Resource * @since 1.6, Common Annotations 1.0 */ @Documented @Retention (RUNTIME) @Target(METHOD) public @interface PostConstruct { }