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HttpSessionBindingListener.java
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1998-04-21
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/*
* @(#)HttpSessionBindingListener.java 1.6 97/10/15
*
* Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
*
* This software is the confidential and proprietary information of Sun
* Microsystems, Inc. ("Confidential Information"). You shall not
* disclose such Confidential Information and shall use it only in
* accordance with the terms of the license agreement you entered into
* with Sun.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
* SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
* SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
* THIS SOFTWARE OR ITS DERIVATIVES.
*/
package javax.servlet.http;
import java.util.EventListener;
/**
* Objects implement this interface so that they can be notified
* when
* they are being bound or unbound from a HttpSession. When a binding occurs
* (using HttpSession.putValue) HttpSessionBindingEvent communicates the event
* and identifies
* the session into which the object is bound.
*
* <p>Similarly, when an unbinding occurs (using HttpSession.removeValue)
* HttpSessionBindingEvent communicates the event and identifies the
* session from which the object is unbound.
*
* @see HttpSession
* @see HttpSessionBindingEvent
*
* @version 1.6, 10/15/97
*/
public
interface HttpSessionBindingListener
extends EventListener
{
/**
* Notifies the listener that it is being bound into
* a session.
*
* @param event the event identifying the session into
* which the listener is being bound.
*/
public void valueBound (HttpSessionBindingEvent event);
/**
* Notifies the listener that it is being unbound
* from a session.
*
* @param event the event identifying the session from
* which the listener is being unbound.
*/
public void valueUnbound (HttpSessionBindingEvent event);
}