TicTacToe.java Source code

Introduction

Here is the source code for TicTacToe.java

Source

// : c14:TicTacToe.java
// Dialog boxes and creating your own components.
// <applet code=TicTacToe width=200 height=100></applet>
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;

public class TicTacToe extends JApplet {
    private JTextField rows = new JTextField("3"), cols = new JTextField("3");

    private static final int BLANK = 0, XX = 1, OO = 2;

    class ToeDialog extends JDialog {
        private int turn = XX; // Start with x's turn

        ToeDialog(int cellsWide, int cellsHigh) {
            setTitle("The game itself");
            Container cp = getContentPane();
            cp.setLayout(new GridLayout(cellsWide, cellsHigh));
            for (int i = 0; i < cellsWide * cellsHigh; i++)
                cp.add(new ToeButton());
            setSize(cellsWide * 50, cellsHigh * 50);
            setDefaultCloseOperation(DISPOSE_ON_CLOSE);
        }

        class ToeButton extends JPanel {
            private int state = BLANK;

            public ToeButton() {
                addMouseListener(new ML());
            }

            public void paintComponent(Graphics g) {
                super.paintComponent(g);
                int x1 = 0, y1 = 0, x2 = getSize().width - 1, y2 = getSize().height - 1;
                g.drawRect(x1, y1, x2, y2);
                x1 = x2 / 4;
                y1 = y2 / 4;
                int wide = x2 / 2, high = y2 / 2;
                if (state == XX) {
                    g.drawLine(x1, y1, x1 + wide, y1 + high);
                    g.drawLine(x1, y1 + high, x1 + wide, y1);
                }
                if (state == OO)
                    g.drawOval(x1, y1, x1 + wide / 2, y1 + high / 2);
            }

            class ML extends MouseAdapter {
                public void mousePressed(MouseEvent e) {
                    if (state == BLANK) {
                        state = turn;
                        turn = (turn == XX ? OO : XX);
                    } else
                        state = (state == XX ? OO : XX);
                    repaint();
                }
            }
        }
    }

    class BL implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            JDialog d = new ToeDialog(Integer.parseInt(rows.getText()), Integer.parseInt(cols.getText()));
            d.setVisible(true);
        }
    }

    public void init() {
        JPanel p = new JPanel();
        p.setLayout(new GridLayout(2, 2));
        p.add(new JLabel("Rows", JLabel.CENTER));
        p.add(rows);
        p.add(new JLabel("Columns", JLabel.CENTER));
        p.add(cols);
        Container cp = getContentPane();
        cp.add(p, BorderLayout.NORTH);
        JButton b = new JButton("go");
        b.addActionListener(new BL());
        cp.add(b, BorderLayout.SOUTH);
    }

    public static void main(String[] args) {
        run(new TicTacToe(), 200, 100);
    }

    public static void run(JApplet applet, int width, int height) {
        JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.getContentPane().add(applet);
        frame.setSize(width, height);
        applet.init();
        applet.start();
        frame.setVisible(true);
    }
} ///:~