package testsystem;

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class first
{
    public static void main(String[] args) {

   Frame frm=new Frame();
   Label lab=new Label("您喜歡的水果?");
   Checkbox box1=new Checkbox("蘋果",true);
   Checkbox box2=new Checkbox("葡萄",true);
   Checkbox box3=new Checkbox("桔子",false);
   CheckboxGroup grp=new CheckboxGroup();
   frm.setSize(300,250);
   frm.setLocation(300,300);
   frm.setLayout(null);
   frm.setBackground(Color.pink);
   frm.add(lab);
   frm.add(box1);
   frm.add(box2);
   frm.add(box3);
   lab.setBounds(20,30,200,20);
   box1.setBounds(20,50,200,20);
   box2.setBounds(20,70,200,20);
   box3.setBounds(20,90,200,20);
   box1.setCheckboxGroup(grp);
   box2.setCheckboxGroup(grp);
   box3.setCheckboxGroup(grp);
   frm.setVisible(true);


    }
}