?? buttonclick.java
字號(hào):
//ButtonClick.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class ButtonClick
{
public static void main(String[] args)
{
ButtonFrame frame = new ButtonFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.show();
}
}
class ButtonFrame extends JFrame
{
public ButtonFrame()
{
setTitle("ButtonClick");
setSize(WIDTH, HEIGHT);
// 將panel加入到frame
ButtonPanel panel = new ButtonPanel();
Container contentPane = getContentPane();
contentPane.add(panel);
}
public static final int WIDTH = 300;
public static final int HEIGHT = 200;
}
class ButtonPanel extends JPanel
{
public ButtonPanel()
{
//創(chuàng)建按鈕
JButton Button1 = new JButton("按鈕一");
JButton Button2 = new JButton("按鈕二");
//將按鈕加入panel
add(Button1);
add(Button2);
//創(chuàng)建監(jiān)聽器
ButtonAction ButtonAction1 = new ButtonAction("按鈕一");
ButtonAction ButtonAction2 = new ButtonAction("按鈕二");
//注冊(cè)監(jiān)聽器
Button1.addActionListener(ButtonAction1);
Button2.addActionListener(ButtonAction2);
}
public void paintComponent(Graphics g)
{
super.paintComponent(g);
//顯示用戶的點(diǎn)擊操作
g.drawString("您點(diǎn)擊的是:" + ButtonText, 90, 120);
}
private class ButtonAction
implements ActionListener
{
public ButtonAction(String text)
{
clicktext = text;
}
public void actionPerformed(ActionEvent event)
{
ButtonText = clicktext;
repaint();
}
private String clicktext;
}
public String ButtonText = "";
}
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