checkboxdemo.java

java经典的源代码 我非常喜欢这个源代码 对于编程很有好处

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

public class CheckboxDemo extends JFrame {
  JPanel contentPane;
 CheckboxGroup checkboxGroup1 = new CheckboxGroup();
 Checkbox checkbox1 = new Checkbox();
 Checkbox checkbox2 = new Checkbox();
 Checkbox checkbox3 = new Checkbox();
 Checkbox checkbox4 = new Checkbox();
 Checkbox checkbox5 = new Checkbox();
 Checkbox checkbox6 = new Checkbox();
 Label label1 = new Label();
 Label label2 = new Label();
 Label label3 = new Label();
 Label label4 = new Label();

 //Construct the frame
 public CheckboxDemo() {
   enableEvents(AWTEvent.WINDOW_EVENT_MASK);
   try {
     jbInit();
   }
   catch(Exception e) {
     e.printStackTrace();
   }
 }
 //Component initialization
 private void jbInit() throws Exception  {
   contentPane = (JPanel) this.getContentPane();
   checkbox1.setCheckboxGroup(null);
   checkbox1.setLabel("足球");
   checkbox1.setLocale(java.util.Locale.getDefault());
   checkbox1.setState(false);
   checkbox1.setVisible(true);
   checkbox1.setBounds(new Rectangle(68, 65, 100, 20));
   contentPane.setLayout(null);
   this.setSize(new Dimension(400, 300));
   this.setTitle("使用CheckBox and CheckBoxGroup");
   checkbox2.setCheckboxGroup(null);
   checkbox2.setLabel("篮球");
   checkbox2.setBounds(new Rectangle(68, 98, 79, 25));
   checkbox3.setCheckboxGroup(null);
   checkbox3.setLabel("网球");
   checkbox3.setBounds(new Rectangle(69, 134, 79, 25));
   checkbox4.setCheckboxGroup(checkboxGroup1);
   checkbox4.setLabel("本科");
   checkbox4.setBounds(new Rectangle(232, 63, 79, 25));
   checkbox5.setCheckboxGroup(checkboxGroup1);
   checkbox5.setLabel("硕士");
   checkbox5.setBounds(new Rectangle(233, 94, 79, 25));
   checkbox6.setCheckboxGroup(checkboxGroup1);
   checkbox6.setLabel("博士");
   checkbox6.setBounds(new Rectangle(232, 130, 79, 25));
   label1.setText("这是CheckBox");
   label1.setBounds(new Rectangle(62, 33, 100, 21));
   label2.setText("这是CheckboxGroup");
   label2.setBounds(new Rectangle(223, 29, 131, 22));
   label3.setText("请选择你的爱好");
   label3.setBounds(new Rectangle(62, 180, 93, 24));
   label4.setText("请选择你的学历");
   label4.setBounds(new Rectangle(226, 179, 109, 21));
   contentPane.add(label2, null);
   contentPane.add(label1, null);
   contentPane.add(checkbox2, null);
   contentPane.add(checkbox3, null);
   contentPane.add(checkbox1, null);
   contentPane.add(checkbox4, null);
   contentPane.add(checkbox6, null);
   contentPane.add(checkbox5, null);
   contentPane.add(label3, null);
   contentPane.add(label4, null);

  }
  public static void main(String args[]){
    CheckboxDemo f=new CheckboxDemo ();
    f.show();
  }

}