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

public class CheckState extends Applet
                        implements ActionListener
{
  private Checkbox bigDot = new Checkbox("Large", true);
  private Button   paintBtn = new Button("Paint");

  public void init()
  {
    setLayout(new BorderLayout());
    add("North", bigDot);
    add("South", paintBtn);
    paintBtn.addActionListener(this);
  }

  public void paint(Graphics g)
  {
    int w = getSize().width;
    int h = getSize().height;

    if (bigDot.getState())
      g.drawOval(w/3, h/3, w/3, h/3);
    else
      g.drawOval((w/5)*2, (h/5)*2, w/5, h/5);
  }

  public void actionPerformed(ActionEvent ae)
  {
    repaint();
  }
}