Description: JAVA inheritance, abstract classes, interfaces to achieve small example, suitable for beginners, easy to understand.
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TESTJAVA
........\.classpath
........\.project
........\.settings
........\.........\org.eclipse.jdt.core.prefs
........\bin
........\...\com
........\...\...\Father.class
........\...\...\main.class
........\...\...\MyThread.class
........\...\...\SocketHandler.class
........\...\...\SocketServer.class
........\...\...\Son.class
........\...\...\test.class
........\...\...\TEST1.class
........\...\...\TEST2.class
........\src
........\...\com
........\...\...\Father.java
........\...\...\main.java
........\...\...\MyThread.java
........\...\...\SocketHandler.java
........\...\...\SocketServer.java
........\...\...\Son.java
........\...\...\test.java
........\...\...\TEST1.java
........\...\...\TEST2.java