?? example.java
字號(hào):
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class example extends JApplet implements ActionListener {
Container cp;
JButton bt1,bt2;
JLabel lb;
Panel pa1;
public void init(){
cp=getContentPane();
pa1=new Panel();
bt1=new JButton("確定");
bt2=new JButton("退出");
lb=new JLabel("Java",JLabel.LEFT);
pa1.add(bt1);pa1.add(bt2);
cp.add(lb,BorderLayout.NORTH);
cp.add(pa1,BorderLayout.SOUTH);
bt1.addActionListener(this);
bt2.addActionListener(this);}
public void actionPerformed(ActionEvent e){
if(e.getSource()==bt1){
if(bt1.getText()=="確定")
lb.setText("你好");}
else
if(e.getSource()==bt2){
if(bt2.getText()=="退出")
lb.setText("再見");
}
}
}
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