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CHECKBOX COMPONENT OF AWT IN JAVA

import java.awt.*;
import java.awt.event.*;
class ChkBox implements ItemListener
{
    Frame fr;
    Panel p;
    Checkbox c1,c2,c3;
    private String msg;
    public ChkBox()
    {
        fr=new Frame("CHECK BOX");
        p=new Panel();

         c1=new Checkbox("ONE");
        c2=new Checkbox("TWO");
        c3=new Checkbox("THREE");

         p.add(c1);
        p.add(c2);
        p.add(c3);

         c1.addItemListener(this);
        c2.addItemListener(this);
        c3.addItemListener(this);

         fr.add(p);

         fr.addWindowListener(new close());

         fr.setSize(800,800);
        fr.setVisible(true);
    }
    public void itemStateChanged(ItemEvent ie)
    {
       if(ie.getSource()==c1)
       {
           if(c1.getState()==true)
                   System.out.println(c1.getLabel());
       }

        if(ie.getSource()==c2)
       {
           if(c2.getState()==true)
           System.out.println(c2.getLabel());
       }

        if(ie.getSource()==c3)
       {
           if(c3.getState()==true)
           System.out.println(c3.getLabel());
       }
        
    }

    

     public void actionPerformed(ActionEvent e) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

     private void paint() {
        throw new UnsupportedOperationException("Not yet implemented");
    }
}

 class close extends WindowAdapter
{
     @Override
        public void windowClosing(WindowEvent e)
        {
        System.exit(0);
        }
}

 public class UseCheckBox {
  public static void  main(String args[])
    {
    ChkBox chk=new ChkBox();
    }
}

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