1 files changed, 29 insertions, 0 deletions
diff --git a/docs/modules/ROOT/examples/observer/Demo.java b/docs/modules/ROOT/examples/observer/Demo.java
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+++ b/docs/modules/ROOT/examples/observer/Demo.java
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+/*
+Copyright (c) Xerox Corporation 1998-2002.  All rights reserved.
+
+Use and copying of this software and preparation of derivative works based
+upon this software are permitted.  Any distribution of this software or
+derivative works must comply with all applicable United States export control
+laws.
+
+This software is made available AS IS, and Xerox Corporation makes no warranty
+about the software, its performance or its conformity to any specification.
+*/
+
+package observer;
+
+public class Demo {
+    public static void main(String[] args) {
+
+        Display display = new Display();
+        Button b1 = new Button(display);
+        Button b2 = new Button(display);
+        ColorLabel c1 = new ColorLabel(display);
+        ColorLabel c2 = new ColorLabel(display);
+        ColorLabel c3 = new ColorLabel(display);
+
+        b1.addObserver(c1);
+        b1.addObserver(c2);
+        b2.addObserver(c3);
+    }
+}