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Java > Open Source Codes > org > mortbay > util > Observed


1 // ========================================================================
2 // $Id: Observed.java,v 1.2 2004/05/09 20:32:49 gregwilkins Exp $
3 // Copyright 1996-2004 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // Licensed under the Apache License, Version 2.0 (the "License");
6 // you may not use this file except in compliance with the License.
7 // You may obtain a copy of the License at
8 // http://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 // ========================================================================
15
16 package org.mortbay.util;
17
18 import java.util.Observable JavaDoc;
19
20 /* ======================================================================== */
21 /** Helpful extension to Observable.
22  * NotifyObservers will set a changed first.
23  */
24 public class Observed extends Observable JavaDoc
25 {
26     public void notifyObservers(Object JavaDoc arg)
27     {
28         setChanged();
29         super.notifyObservers(arg);
30     }
31
32     public void notifyObservers()
33     {
34         setChanged();
35         super.notifyObservers(null);
36     }
37 }
38
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