HiLoGame.java

/**
*  Source code auto-generated by Simple GUI Extension for BlueJ
*/
import javax.swing.UIManager.LookAndFeelInfo;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;
import javax.swing.border.Border;
import javax.swing.*;

/** Graphical High Low Game.  The user guesses whether the next card will be
 * higher or lower than the current card.
 * @author jdalbey
 * @version 2016.4.9
 */
public class HiLoGame extends JFrame
{
    public enum Guess{ low, high };

    private int bankroll;   // how much money the player has
    private int currentNum; // the current displayed number
    private int maxHigh;    // the highest number that can be dealt

    private JMenuBar menuBar;
    private JButton button1;
    private JButton button2;
    private JLabel label1;
    private JLabel label2;
    private JTextField txtNumber;
    private JTextField txtBalance;

    //Constructor
    public HiLoGame()
    {
        this.setTitle("Hi Lo Game");
        this.setSize(366,225);
        //menu generate method
        generateMenu();
        this.setJMenuBar(menuBar);

        //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.setVisible(true);
        //Set action for button click
        //Call defined method
        button1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                guessHigh(evt);
            }
        });


        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.setVisible(true);
        //Set action for button click
        //Call defined method
        button2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                guessLow(evt);
            }
        });


        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);

        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);

        //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();
        this.setVisible(true);

        // initialize the game
        bankroll = 100;
        maxHigh = 13;
        // A random integer value in the range [1,maxHigh]
        currentNum = 1 + (int)(Math.random() * ((maxHigh - 1) + 1));

        refresh();
    }

    //Method actionPerformed for button1
    private void guessHigh (ActionEvent evt)
    {
        takeTurn(Guess.high);
        refresh();
    }

    //Method actionPerformed for button2
    private void guessLow (ActionEvent evt)
    {
        takeTurn(Guess.low);
        refresh();
    }

    /**
     *  Take a turn
     *  @param guess The user's guess if the next number is higher or lower than current.
     *  @post outcome is computed and bankroll updated, a new currentNum is selected randomly.
     */
    public void takeTurn(Guess guess)
    {
        // pick the next num
        int newNum  = 1 + (int)(Math.random() * ((maxHigh - 1) + 1));
        // compare to previous num
        int diff = newNum - currentNum;
        // Evaluate user's guess
        if (diff > 0)
        {
            // Change the amount of money based on correctness of guess
            if ( guess == Guess.high )
            {
                bankroll += 10;
            }
            else
            {
                bankroll -= 10;
            }
        }
        else if (diff < 0)
        {
            // Change the amount of money based on correctness of guess
            if ( guess == Guess.low )
            {
                bankroll += 10;
            }
            else
            {
                bankroll -= 10;
            }
        }
        // if numbers are same nothing happens
        currentNum = newNum;
    }
    /* Update the fields with current values */
    private void refresh()
    {
        txtNumber.setText(""+currentNum);
        txtBalance.setText(""+bankroll);
    }
    //method for generate menu
    public void generateMenu()
    {
        menuBar = new JMenuBar();
        JMenu file = new JMenu("File");
        JMenuItem exit = new JMenuItem("Exit   ");
        exit.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                dispose();
            }
        });
        file.add(exit);
        menuBar.add(file);
    }



     public static void main(String[] args)
     {
        System.setProperty("swing.defaultlaf", "com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
        javax.swing.SwingUtilities.invokeLater(new Runnable()
        {
            public void run()
            {
                new HiLoGame();
            }
        });
    }

}