HiLoGUI for mocking

package hilomocked;

/**
 * Text generated by Simple GUI Extension for BlueJ
 */
import java.awt.*;
import java.awt.event.ActionListener;
import javax.swing.*;

/**
 * GUI for the High Low Game.
 *
 * @author jdalbey
 * @version 2013.1.20
 */
public class HiLoGUI extends JFrame implements java.util.Observer
{

    private JButton button1;
    private JButton button2;
    private JLabel label1;
    private JLabel label2;
    private JTextField txtNumber;
    private JTextField txtBalance;
    private ActionListener controller;
    //Constructor

    public HiLoGUI(ActionListener controller)
    {
        this.controller = controller;

        this.setTitle("GUI_project");
        this.setSize(366, 225);

        //pane with null layout
        JPanel contentPane = new JPanel(null);
        contentPane.setPreferredSize(new Dimension(366, 225));
        contentPane.setBackground(new Color(192, 192, 192));


        button1 = new JButton();
        button1.setBounds(13, 90, 112, 34);
        button1.setBackground(new Color(214, 217, 223));
        button1.setForeground(new Color(0, 0, 0));
        button1.setEnabled(true);
        button1.setFont(new Font("DejaVu Sans", 0, 12));
        button1.setText("Guess High");
        button1.setActionCommand(AbstractGame.Guess.high.toString());
        button1.setVisible(true);
        //Set action for button click
        button1.addActionListener(controller);


        button2 = new JButton();
        button2.setBounds(14, 139, 110, 33);
        button2.setBackground(new Color(214, 217, 223));
        button2.setForeground(new Color(0, 0, 0));
        button2.setEnabled(true);
        button2.setFont(new Font("DejaVu Sans", 0, 12));
        button2.setText("Guess Low");
        button2.setActionCommand(AbstractGame.Guess.low.toString());
        button2.setVisible(true);
        //Set action for button click
        button2.addActionListener(controller);


        label1 = new JLabel();
        label1.setBounds(16, 31, 90, 35);
        label1.setBackground(new Color(214, 217, 223));
        label1.setForeground(new Color(0, 0, 0));
        label1.setEnabled(true);
        label1.setFont(new Font("DejaVu Sans", 0, 12));
        label1.setText("Number");
        label1.setVisible(true);

        label2 = new JLabel();
        label2.setBounds(177, 27, 87, 41);
        label2.setBackground(new Color(214, 217, 223));
        label2.setForeground(new Color(0, 0, 0));
        label2.setEnabled(true);
        label2.setFont(new Font("DejaVu Sans", 0, 12));
        label2.setText("Balance");
        label2.setVisible(true);

        txtNumber = new JTextField();
        txtNumber.setBounds(75, 30, 54, 32);
        txtNumber.setBackground(new Color(255, 255, 255));
        txtNumber.setForeground(new Color(0, 0, 0));
        txtNumber.setEnabled(true);
        txtNumber.setFont(new Font("DejaVu Sans", 0, 12));
        txtNumber.setText("0");
        txtNumber.setVisible(true);
        txtNumber.setEditable(false);
        txtNumber.setName("txtNumber");

        txtBalance = new JTextField();
        txtBalance.setBounds(247, 30, 71, 34);
        txtBalance.setBackground(new Color(255, 255, 255));
        txtBalance.setForeground(new Color(0, 0, 0));
        txtBalance.setEnabled(true);
        txtBalance.setFont(new Font("DejaVu Sans", 0, 12));
        txtBalance.setText("100");
        txtBalance.setVisible(true);
        txtBalance.setEditable(false);
        txtBalance.setName("txtBalance");

        //adding components to contentPane panel
        contentPane.add(button1);
        contentPane.add(button2);
        contentPane.add(label1);
        contentPane.add(label2);
        contentPane.add(txtNumber);
        contentPane.add(txtBalance);

        //adding panel to JFrame and seting of window position and close operation
        this.add(contentPane);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setLocationRelativeTo(null);
        this.pack();

    }

    /* Update the fields with current values */
    public void update(java.util.Observable obs, Object obj)
    {
        AbstractGame game = (AbstractGame) obs;
        txtNumber.setText("" + game.getCurrentNum());
        txtBalance.setText("" + game.getBalance());
    }
}