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| <h2 title="Annotation Type PostConstruct" class="title">Annotation Type PostConstruct</h2> |
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| <pre>@Documented |
| @Retention(value=RUNTIME) |
| @Target(value=METHOD) |
| public @interface <span class="memberNameLabel">PostConstruct</span></pre> |
| <div class="block">The <code>PostConstruct</code> 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 |
| <code>PostConstruct</code> must be invoked even if the class does |
| not request any resources to be injected. Only one |
| method in a given class can be annotated with this annotation. |
| The method on which the <code>PostConstruct</code> 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 <code>InvocationContext</code> |
| object as defined by the Interceptors specification.</li> |
| <li>The method defined on an interceptor class or superclass of 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 the <code>PostConstruct</code> annotation |
| 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 should not be final.</li> |
| <li>If the method throws an unchecked exception the class must not be put into |
| service except in the case where the exception is handled by an |
| interceptor.</li></ul></div> |
| <dl> |
| <dt><span class="simpleTagLabel">Since:</span></dt> |
| <dd>1.6, Common Annotations 1.0</dd> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../javax/annotation/PreDestroy.html" title="annotation in javax.annotation"><code>PreDestroy</code></a>, |
| <a href="../../javax/annotation/Resource.html" title="annotation in javax.annotation"><code>Resource</code></a></dd> |
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