With the observer design pattern to achieve a small example program to simulate the event listener mechanism awt

OOAD
....\.classpath
....\.project
....\bin
....\...\com
....\...\...\bj
....\...\...\..\observer
....\...\...\..\........\awt
....\...\...\..\........\...\ActionEvent.class
....\...\...\..\........\...\ActionListener.class
....\...\...\..\........\...\Button.class
....\...\...\..\........\...\MyActionListener.class
....\...\...\..\........\...\MyActionListener2.class
....\...\...\..\........\...\Test.class
....\...\...\..\........\...\TestFrame$1.class
....\...\...\..\........\...\TestFrame$MyActionListener.class
....\...\...\..\........\...\TestFrame$MyActionListener2.class
....\...\...\..\........\...\TestFrame.class
....\...\...\..\........\Child.class
....\...\...\..\........\Dad.class
....\...\...\..\........\Dog.class
....\...\...\..\........\GrandFather.class
....\...\...\..\........\PropertyMgr$CryEvent.class
....\...\...\..\........\PropertyMgr$Event.class
....\...\...\..\........\PropertyMgr.class
....\...\...\..\........\Test.class
....\...\...\..\........\WakenUpEvent.class
....\...\...\..\........\WakenUpListener.class
....\...\observer.properties
....\src
....\...\com
....\...\...\bj
....\...\...\..\observer
....\...\...\..\........\awt
....\...\...\..\........\...\Test.java
....\...\...\..\........\...\TestFrame.java
....\...\...\..\........\Test.java
....\...\observer.properties

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