twolisteninner.java

清华大学第二版

import java.awt.*;
import java.awt.event.*;

public class TwoListenInner{
	// 不影响其他成员变量和方法

	public void go(){
//	......
	f.addMouseMotionListener(new TwoListenInner$MouseMotionHandler(this));
//	......
	}

	class TwoListenInner$MouseMotionHandler extends MouseMotionAdapter{
		private TwoListenInner this$0;

		// 编译器自动生成结构
TwoListenInner$MouseMotionHandler(TwoListenInner this$0);
this.this$0 = this$0;}
	public void mouseDragged (MouseEvent e){
		String s="Mouse dragging: X="+e.getX() +"Y="+e.getY();
		this$0.tf.setText(s);
	}
}