import java.awt.*;
import java.awt.event.*;

public class CheckboxGUI3 implements ItemListener {
	public CheckboxGUI3 (){
		Frame frame = new Frame ("My GUI");
		frame.setSize(300,300);
		Checkbox checkbox = new Checkbox ("Tick me");
		CheckboxListener cbl = new CheckboxListener();
		checkbox.addItemListener(this);
		frame.add(checkbox);
		frame.setVisible(true);
	}

	public void itemStateChanged(ItemEvent e) {
		((Checkbox)(e.getSource())).setLabel("I've been ticked");
	}
	
	public static void main (String args[]) {
		new CheckboxGUI3();
	}
}