import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;

public class ButtonLeft extends JButton implements ActionListener {
    private Square square; 

    public ButtonLeft (Square square) {
	this.square = square; 
	setIcon (new ImageIcon ("leftArrow.gif")); 
	setBorder (new LineBorder(Color.GREEN, 2)); 
	addActionListener (this); 
    }

    public void actionPerformed (ActionEvent e) { 
        square.doAction (Square.ButtonAction.LEFT); 
    }
}