button2b.java

来自「Java编程思想第三版,作者书中全部原代码,」· Java 代码 · 共 35 行

//: c14:Button2b.java
// Using anonymous inner classes.
// <applet code=Button2b width=200 height=75></applet>
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import com.bruceeckel.swing.*;

public class Button2b extends JApplet {
  private JButton
    b1 = new JButton("Button 1"),
    b2 = new JButton("Button 2");
  private JTextField txt = new JTextField(10);
  private ActionListener bl = new ActionListener() {
    public void actionPerformed(ActionEvent e) {
      String name = ((JButton)e.getSource()).getText();
      txt.setText(name);
    }
  };
  public void init() {
    b1.addActionListener(bl);
    b2.addActionListener(bl);
    Container cp = getContentPane();
    cp.setLayout(new FlowLayout());
    cp.add(b1);
    cp.add(b2);
    cp.add(txt);
  }
  public static void main(String[] args) {
    Console.run(new Button2b(), 200, 75);
  }
} ///:~