button2.java

10Applet&Gui java教程 第10长

// <applet code=Button2 width=200 height=75>
// </applet>
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;

public class Button2 extends JApplet {
  JButton 
    b1 = new JButton("Button 1"), 
    b2 = new JButton("Button 2");
  JTextField txt = new JTextField(10);
  class BL implements ActionListener {
    public void actionPerformed(ActionEvent e){
      String name = 
        ((JButton)e.getSource()).getText();
      txt.setText(name);
    }
  }
  BL al = new BL();
  public void init() {
    b1.addActionListener(al);
    b2.addActionListener(al);
    Container cp = getContentPane();
    cp.setLayout(new FlowLayout());
    cp.add(b1);
    cp.add(b2);
    cp.add(txt);
  }
}