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Etcher-Sketcher
An Example of the Observer Pattern


Prof. David Bernstein
James Madison University

Computer Science Department
bernstdh@jmu.edu

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The Subject Interface
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PointSubject

javaexamples/navigation/PointSubject.java
 
The Observer Interface
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PointObserver

javaexamples/navigation/PointObserver.java
 
The Subject
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WayIconSubject

javaexamples/navigation/WayIconSubject.java
 
The Observer
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EtcherSketcher

javaexamples/navigation/EtcherSketcher.java
 
The Driver
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EtcherSketcherDriver

javaexamples/navigation/EtcherSketcherDriver.java
 
There's Always More to Learn
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