listenerdemo1.java

来自「这是清华大学编写的JAVA教材中所有题目的源代码！」· Java 代码 · 共 35 行

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

class ListenerDemo extends Frame 
{
	static TextField tf=new TextField(30);
	Button btn=new Button("请点这");

	public ListenerDemo(String title) 
	{
		super(title);

		//AAA bl=new AAA();
		//btn.addActionListener(bl);
		btn.addActionListener(new AAA());
		
		add(tf,BorderLayout.NORTH);
		add(btn,BorderLayout.SOUTH);
		setSize(300,200);
		setVisible(true);		
	}
	
	public static void main(String args[])
	{
		new ListenerDemo("监听器示例");
	}
}

class AAA implements ActionListener
{
	public void actionPerformed(ActionEvent e)
	{
		ListenerDemo.tf.setText("你按了按纽！");
	}
}