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PC World Komputer 1995 November
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PCWK1195.iso
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classsrc
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browser
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observerlist.java
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1995-08-11
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/*
* @(#)ObserverList.java 1.5 95/03/14 Jonathan Payne
*
* Copyright (c) 1994 Sun Microsystems, Inc. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL purposes and without
* fee is hereby granted provided that this copyright notice
* appears in all copies. Please refer to the file "copyright.html"
* for further important copyright and licensing information.
*
* 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 browser;
import java.util.Vector;
/*
* This class is used to hold the set of observers of an observable
* object whenever there is more than one observer.
*/
public class ObserverList extends Vector {
/** Notifies all the observers in the list. This goes from
back to front, so that it's OK to remove Observers from
the list as a result of this call. */
public void notifyObservers(Observable who) {
int i = size();
while (--i >= 0) {
Observer o;
o = (Observer) elementAt(i);
o.update(who);
}
}
}