程序8_5.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;;
public class 程序8_5 {
  JFrame frame = new JFrame("Two States Button Demo2");
  JCheckBox cb1 = new JCheckBox("JCheckBox 1");
  JCheckBox cb2 = new JCheckBox("JCheckBox 2");
  JCheckBox cb3 = new JCheckBox("JCheckBox 3");
  JCheckBox cb4 = new JCheckBox("JCheckBox 4");
  JCheckBox cb5 = new JCheckBox("JCheckBox 5");
  JCheckBox cb6 = new JCheckBox("JCheckBox 6");
  JRadioButton rb1 = new JRadioButton("JRadioButton 1");
  JRadioButton rb2 = new JRadioButton("JRadioButton 2");
  JRadioButton rb3 = new JRadioButton("JRadioButton 3");
  JRadioButton rb4 = new JRadioButton("JRadioButton 4");
  JRadioButton rb5 = new JRadioButton("JRadioButton 5");
  JRadioButton rb6 = new JRadioButton("JRadioButton 6");
  JTextArea ta = new JTextArea();
  public static void main(String[] args) {
      程序8_5 ts = new 程序8_5();
      ts.go();
  }

  public void go() {
    JPanel p1 = new JPanel();
    JPanel p2 = new JPanel();
    JPanel p3 = new JPanel();
    JPanel p4 = new JPanel();
    JPanel p5 = new JPanel();
    JPanel pa = new JPanel();
    JPanel pb = new JPanel();
    p1.add(cb1);
    p1.add(cb2);
    p1.add(cb3);
    Border etched = BorderFactory.createEtchedBorder();
    Border border = BorderFactory.createTitledBorder(etched,"JCheckBox");
    p1.setBorder(border);
    p2.add(cb4);
    p2.add(cb5);
    p2.add(cb6);
    border = BorderFactory.createTitledBorder(etched,"JCheckBox Group");
    p2.setBorder(border);     //设置边框
    // 创建ButtonGroup按钮组，并在组中添加按钮
    ButtonGroup group1 = new ButtonGroup();
    group1.add(cb4);
    group1.add(cb5);
    group1.add(cb6);
    p3.add(rb1);
    p3.add(rb2);  
    p3.add(rb3);
    border = BorderFactory.createTitledBorder(etched,"JRadioButton");
    p3.setBorder(border);
    p4.add(rb4);
    p4.add(rb5);
    p4.add(rb6);
    border = BorderFactory.createTitledBorder(etched,"JRadioButton Group");
    p4.setBorder(border); // 设置边框
    // 创建ButtonGroup按钮组，并在组中田间按钮
    ButtonGroup group2 = new ButtonGroup();
    group2.add(rb4);
    group2.add(rb5);
    group2.add(rb6);
    JScrollPane jp = new JScrollPane(ta);
    p5.setLayout(new BorderLayout()); p5.add(jp);
    border = BorderFactory.createTitledBorder(etched,"Results");
    p5.setBorder(border);
    ItemListener il = new ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        JCheckBox cb = (JCheckBox)e.getSource();  // 取得事件源
        if(cb == cb1) {ta.append("\n JCheckBox Button 1" + cb1.isSelected());
        } else if (cb == cb2) {ta.append("\n JCheckBox Button 2" + cb2.isSelected());
        } else if (cb == cb3) {ta.append("\n JCheckBox Button 3" + cb3.isSelected());
        } else if (cb == cb4) {ta.append("\n JCheckBox Button 4" + cb4.isSelected());
        } else if (cb == cb5) {ta.append("\n JCheckBox Button 5" + cb5.isSelected());
        } else {  ta.append("\n JCheckBox Buttoon 6" + cb6.isSelected());
        }
      }
    };
    cb1.addItemListener(il);
    cb2.addItemListener(il);
    cb3.addItemListener(il);
    cb4.addItemListener(il);
    cb5.addItemListener(il);
    cb6.addItemListener(il);
    ActionListener al = new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        JRadioButton rb = (JRadioButton)e.getSource(); //获取事件源
        if(rb == rb1) {
          ta.append("\n You selected Radio Button 1" + rb1.isSelected());
        } else if (rb == rb2) {
          ta.append("\n  You selected Radio Button 2" + rb2.isSelected());
        } else if (rb == rb3) {
          ta.append("\n  You selected Radio Button 3" + rb3.isSelected());
        } else if (rb == rb4) {
          ta.append("\n  You selected Radio Button 4" + rb4.isSelected());
        } else if (rb == rb5) {
          ta.append("\n  You selected Radio Button 5" + rb5.isSelected());
        } else {
          ta.append("\n  You selected Radio Button 6" + rb6.isSelected());
        }
      }
    };
    rb1.addActionListener(al);
    rb2.addActionListener(al);
    rb3.addActionListener(al);
    rb4.addActionListener(al);
    rb5.addActionListener(al);
    rb6.addActionListener(al);
    pa.setLayout(new GridLayout(0,1));
    pa.add(p1);
    pa.add(p2);
    pb.setLayout(new GridLayout(0,1));
    pb.add(p3);
    pb.add(p4);
    Container cp = frame.getContentPane();
    cp.setLayout(new GridLayout());
    cp.add(pa);
    cp.add(pb);
    cp.add(p5);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setVisible(true);
  }    
}