/*
* 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:
- 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.
- The method defined on an interceptor class MUST HAVE one of the
following signatures:
void <METHOD>(InvocationContext)
Object <METHOD>(InvocationContext) throws Exception
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.
- The method defined on a non-interceptor class MUST HAVE the
following signature:
void <METHOD>()
- The method on which PostConstruct is applied MAY be public, protected,
package private or private.
- The method MUST NOT be static except for the application client.
- The method MAY be final.
- 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.
See Also: - PreDestroy
- Resource
Since: 1.6, Common Annotations 1.0
/**
* 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 {
}