一个简单的Java图形界面的编程，能够实现自动适应窗口的变化而改变其中组建的大小。对初学者学习java Swing编程有很好的帮助。-A simple programming of the Java graphical interface that can automatically adapt to the changes of the window to change the size of the formed therein. Have a good help for beginners to learn java Swing programming.