buttonevent2.java

按钮事件 按钮事件 按钮事件 按钮事件

//按钮事件
//ButtonEvent2.java
//<applet code=ButtonEvent2 width=200 height=50>
//</applet>
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import javax.swing.event.*;
public class ButtonEvent2 extends JApplet
{
	JButton
		button1=new JButton("Press me"),
		button2=new JButton("Clear");
	JTextField txt=new JTextField(20);
	class Button1Listner implements ChangeListener
	{
		public void stateChanged(ChangeEvent e)
		{
			txt.setText(txt.getText()+"Press me.");
		}
	};
	class Button2Listner implements ActionListener
	{
		public void actionPerformed(ActionEvent e)
		{
			txt.setText("");
		}
	};
	Button1Listner a1=new Button1Listner();
	Button2Listner a2=new Button2Listner();
	public void init()
	{
		button1.addChangeListener(a1);
		button2.addActionListener(a2);
		Container cp=getContentPane();
		cp.setLayout(new FlowLayout());
		cp.add(button1);
		cp.add(button2);
		cp.add(txt);
	}
};