49

package com.haizhitao.awt;import java.awt.BorderLayout;import java.awt.Frame;import java.awt.Label;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;public class TwoListenAdapter{private Frame frame;public void go(){frame = new Frame("TwoListen Adapter");frame.add(new Label("click me"), BorderLayout.NORTH);frame.addMouseListener(new MyListener2());frame.setSize(300, 200);frame.setVisible(true);}public static void main(String[] args){TwoListenAdapter adapter = new TwoListenAdapter();adapter.go();}}class MyListener2 extends MouseAdapter{@Overridepublic void mouseEntered(MouseEvent e){String str = "the mouse has entered the frame";System.out.println(str);}@Overridepublic void mouseExited(MouseEvent e){String str = "the mouse has exited the frame";System.out.println(str);}}