5-16.txt

清华大学第二版

程序5-16

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);
	}
}