//grid layout panel
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class GridLabelButtons extends JFrame implements ActionListener
{

  private JPanel p;
  private JLabel l;

  public GridLabelButtons()
  {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    p = new JPanel();
    p.setLayout(new GridLayout(2,2,20,20));
    p.setPreferredSize(new Dimension(200,100));
    setContentPane(p);

    JButton r = new JButton("Red");
    r.addActionListener(this);
    p.add®;
    JButton a = new JButton("Amber");
    a.addActionListener(this);
    p.add(a);
    JButton g = new JButton("Green");
    g.addActionListener(this);
    p.add(g);
    l = new JLabel("");
    p.add(l);
    
  }

  public void actionPerformed(ActionEvent e)
  {
    String command = e.getActionCommand();
    l.setText(command);
    if (command.equals("Red"))
      p.setBackground(Color.red);
    else if (command.equals("Amber"))
         p.setBackground(Color.orange);
            else if (command.equals("Green"))
               p.setBackground(Color.green);
  }

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