GUIGUIGUI in a small example, want to be useful

ch4\EventDemo1.class
...\EventDemo1.java
...\EventDemo2.class
...\EventDemo2.java
...\EventDemo3$1.class
...\EventDemo3$2.class
...\EventDemo3.class
...\EventDemo3.java
...\EventDemo4.class
...\EventDemo4.java
...\EventDemo5.class
...\EventDemo5.java
...\EventDemo6.class
...\EventDemo6.java
...\EventHandle.class
...\KeyDemo$1.class
...\KeyDemo.class
...\KeyDemo.java
...\MouseDemo1.class
...\MouseDemo1.java
...\MouseDemo2$1.class
...\MouseDemo2.class
...\MouseDemo2.java
...\MouseDemo3$1.class
...\MouseDemo3.class
...\MouseDemo3.java
ch4

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