implementactionlistener.java

来自「有大量的java的实例」· Java 代码 · 共 21 行

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

public class ImplementActionListener extends Applet implements ActionListener
{
TextField password = new TextField("我是密码  ");
Button btn = new Button("隐藏");
public void init()
	{
		add(password);
		add(btn);
		btn.addActionListener(this);
	}
public void actionPerformed(ActionEvent e)
	{
		password.setEchoChar('#');
		password.selectAll();
	}
}