buttonsdemo.java

这是孙卫琴在"Java与面向对象编程"一书的源代码。

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.plaf.basic.BasicArrowButton;
public class ButtonsDemo extends JFrame {
  private JButton jb=new JButton("JButton");
  private BasicArrowButton
    up = new BasicArrowButton(BasicArrowButton.NORTH),
    down = new BasicArrowButton(BasicArrowButton.SOUTH),
    right = new BasicArrowButton(BasicArrowButton.EAST),
    left = new BasicArrowButton(BasicArrowButton.WEST);

  public ButtonsDemo(String title){
    super(title);
    Container contentPane = getContentPane();
    contentPane.setLayout(new FlowLayout());
    contentPane.add(jb);
    contentPane.add(new JToggleButton("JToggleButton"));
    contentPane.add(new JCheckBox("JCheckBox"));
    contentPane.add(new JRadioButton("JRadioButton"));
    JPanel jp = new JPanel();
    jp.setBorder(new TitledBorder("Directions"));
    jp.add(up);
    jp.add(down);
    jp.add(left);
    jp.add(right);
    contentPane.add(jp);

    pack();
    setVisible(true);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }

  public static void main(String[] args) {
    new ButtonsDemo("Hello");
  }
}


/****************************************************
 * 作者：孙卫琴                                     *
 * 来源：<<Java面向对象编程>>                       *
 * 技术支持网址：www.javathinker.org                *
 ***************************************************/