1 files changed, 18 insertions, 0 deletions
diff --git a/docs/modules/ROOT/examples/observer/Observer.java b/docs/modules/ROOT/examples/observer/Observer.java
new file mode 100644
index 000000000..2851ebe17
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+++ b/docs/modules/ROOT/examples/observer/Observer.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;
+
+interface Observer {
+    void setSubject(Subject s);
+    Subject getSubject();
+    void update();
+}