作业2-

package zuye2;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class MyWindow extends JFrame implements ActionListener {

     JLabel interestLabel = new JLabel("兴趣：");     
     JCheckBox badmintonCheck = new JCheckBox("羽毛球"); 
     JCheckBox tableTtennisCheck = new JCheckBox("乒乓球"); 
     JCheckBox singCheck = new JCheckBox("唱歌");

     JLabel genderLabel = new JLabel("性别：");
     JRadioButton maleRadioButton = new JRadioButton("男");
     JRadioButton femaleRadioButton = new JRadioButton("女");

     JTextArea textArea = new JTextArea(5,25);

     MyWindow()
     {
          super("work");
          Container contentPane = getContentPane();       

          JPanel northPanel = new JPanel();
          northPanel.setLayout(new GridLayout(2,1));  

          Box box1 = Box.createHorizontalBox();
          Box box2 = Box.createHorizontalBox();          

          box1.add(Box.createHorizontalStrut(3));
          box1.add(interestLabel );
          box1.add(badmintonCheck );
          box1.add(tableTtennisCheck );
          box1.add(singCheck);        

          ButtonGroup group = new ButtonGroup();
          group.add(maleRadioButton);
          group.add(femaleRadioButton); 

          box2.add(Box.createHorizontalStrut(3));         
          box2.add(genderLabel);
          box2.add(maleRadioButton);
          box2.add(femaleRadioButton);         

          northPanel.add(box1); 
          northPanel.add(box2);
          contentPane.add(northPanel, BorderLayout.NORTH);           

          JScrollPane scrollPane = new JScrollPane(textArea);
          contentPane.add(scrollPane, BorderLayout.CENTER);

          badmintonCheck.addActionListener(this); 
          tableTtennisCheck.addActionListener(this); 
          singCheck.addActionListener(this);
          maleRadioButton.addActionListener(this);
          femaleRadioButton.addActionListener(this);  

          setVisible(true);
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          setSize(400, 300);
     } 

     public void actionPerformed(ActionEvent e)
     {
          if(e.getSource() == badmintonCheck)
          {
              if(badmintonCheck.isSelected() == true)
              {
                   textArea.append("羽毛球" + "
"); 
              }
          }  
          else if(e.getSource() == tableTtennisCheck)
          {
              if(tableTtennisCheck.isSelected() == true)
              {
                   textArea.append("乒乓球" + "
"); 
              }          
          } 
          else if(e.getSource() == singCheck)
          {
              if(singCheck.isSelected() == true)
              {
                   textArea.append("唱歌" + "
"); 
              } 
          }
          else if(e.getSource() == maleRadioButton)
          {
             if(maleRadioButton .isSelected() == true)
             {
                   textArea.append("男" + "
"); 
             } 
          }

          else if(e.getSource() == femaleRadioButton)
          {
             if(femaleRadioButton .isSelected() == true)
             {
                   textArea.append("女" + "
"); 
             } 
          }
          else
          {  
              return; 
          }
     }

     public static void main(String args[])
     {
          new MyWindow();
     }
}