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package javax.annotation;

import java.lang.annotation.*;
import static java.lang.annotation.ElementType.*;
import static java.lang.annotation.RetentionPolicy.*;

/**
 * The PreDestroy annotation is used on methods as a callback notification to 
 * signal that the instance is in the process of being removed by the 
 * container. The method annotated with PreDestroy is typically used to 
 * release resources that it has been holding. This annotation MUST be 
 * supported by all container managed objects that support PostConstruct 
 * except the application client container in Java EE 5. The method on which 
 * the PreDestroy 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 PreDestroy 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 * PreDestroy 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 PreDestroy is applied MAY be public, protected, * package private or private.
  • *
  • The method MUST NOT be static.
  • *
  • The method MAY be final.
  • *
  • If the method throws an unchecked exception it is ignored except in the * case of EJBs where the EJB can handle exceptions.
  • *
* * @see javax.annotation.PostConstruct * @see javax.annotation.Resource * @since Common Annotations 1.0 */ @Documented @Retention (RUNTIME) @Target(METHOD) public @interface PreDestroy { }




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