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  1. import javax.swing.*;
  2. import java.awt.*;
  3. import java.awt.event.*;
  4.  
  5. public class Main extends JFrame implements ActionListener {
  6.  
  7.     private JButton[][] buttons;
  8.     private JLabel statusLabel;
  9.     private boolean playerXTurn = true;
  10.     private int[][] board;
  11.  
  12.     public Main() {
  13.         super("Tic Tac Toe");
  14.         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  15.         setSize(300, 300);
  16.         setLocationRelativeTo(null);
  17.         setLayout(new BorderLayout());
  18.  
  19.         // Create the board
  20.         board = new int[3][3];
  21.         buttons = new JButton[3][3];
  22.         JPanel boardPanel = new JPanel(new GridLayout(3, 3));
  23.         for (int row = 0; row < 3; row++) {
  24.             for (int col = 0; col < 3; col++) {
  25.                 buttons[row][col] = new JButton("");
  26.                 buttons[row][col].setFont(new Font("Arial", Font.BOLD, 40));
  27.                 buttons[row][col].addActionListener(this);
  28.                 boardPanel.add(buttons[row][col]);
  29.             }
  30.         }
  31.         add(boardPanel, BorderLayout.CENTER);
  32.  
  33.         // Create the status label
  34.         statusLabel = new JLabel("X's turn");
  35.         statusLabel.setHorizontalAlignment(SwingConstants.CENTER);
  36.         add(statusLabel, BorderLayout.SOUTH);
  37.  
  38.         setVisible(true);
  39.     }
  40.  
  41.     @Override
  42.     public void actionPerformed(ActionEvent e) {
  43.         for (int row = 0; row < 3; row++) {
  44.             for (int col = 0; col < 3; col++) {
  45.                 if (e.getSource() == buttons[row][col]) {
  46.                     if (board[row][col] == 0) {
  47.                         if (playerXTurn) {
  48.                             buttons[row][col].setText("X");
  49.                             board[row][col] = 1; // X
  50.                         } else {
  51.                             buttons[row][col].setText("O");
  52.                             board[row][col] = -1; // O
  53.                         }
  54.                         playerXTurn = !playerXTurn;
  55.                         if (playerXTurn) {
  56.                             statusLabel.setText("X's turn");
  57.                         } else {
  58.                             statusLabel.setText("O's turn");
  59.                         }
  60.                         if (checkWin()) {
  61.                             if (playerXTurn) {
  62.                                 statusLabel.setText("O wins!");
  63.                             } else {
  64.                                 statusLabel.setText("X wins!");
  65.                             }
  66.                             disableButtons();
  67.                         } else if (checkDraw()) {
  68.                             statusLabel.setText("It's a draw!");
  69.                             disableButtons();
  70.                         }
  71.                     }
  72.                 }
  73.             }
  74.         }
  75.     }
  76.  
  77.     private boolean checkWin() {
  78.         // Check rows
  79.         for (int row = 0; row < 3; row++) {
  80.             if (board[row][0] != 0 && board[row][0] == board[row][1] && board[row][0] == board[row][2]) {
  81.                 return true;
  82.             }
  83.         }
  84.         // Check columns
  85.         for (int col = 0; col < 3; col++) {
  86.             if (board[0][col] != 0 && board[0][col] == board[1][col] && board[0][col] == board[2][col]) {
  87.                 return true;
  88.             }
  89.         }
  90.         // Check diagonals
  91.         if (board[0][0] != 0 && board[0][0] == board[1][1] && board[0][0] == board[2][2]) {
  92.             return true;
  93.         }
  94.         if (board[0][2] != 0 && board[0][2] == board[1][1] && board[0][2] == board[2][0]) {
  95.             return true;
  96.         }
  97.         return false;
  98.     }
  99.  
  100.     private boolean checkDraw() {
  101.         for (int row = 0; row < 3; row++) {
  102.             for (int col = 0; col < 3; col++) {
  103.                 if (board[row][col] == 0) {
  104.                     return false; // There are still empty cells
  105.                 }
  106.             }
  107.         }
  108.         return true; // All cells are filled
  109.     }
  110.  
  111.     private void disableButtons() {
  112.         for (int row = 0; row < 3; row++) {
  113.             for (int col = 0; col < 3; col++) {
  114.                 buttons[row][col].setEnabled(false);
  115.             }
  116.         }
  117.     }
  118.  
  119.     public static void main(String[] args) {
  120.         SwingUtilities.invokeLater(new Runnable() {
  121.             public void run() {
  122.                 new Main();
  123.             }
  124.         });
  125.     }
  126. }
Success #stdin #stdout #stderr 0.25s 67408KB
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Exception in thread "AWT-EventQueue-0" java.awt.HeadlessException: 
No X11 DISPLAY variable was set, but this program performed an operation which requires it.
	at java.desktop/java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:197)
	at java.desktop/java.awt.Window.<init>(Window.java:538)
	at java.desktop/java.awt.Frame.<init>(Frame.java:423)
	at java.desktop/javax.swing.JFrame.<init>(JFrame.java:224)
	at Main.<init>(Main.java:13)
	at Main$1.run(Main.java:122)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:389)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)
https://ideone.com/j3jhOp
language:
Java (HotSpot 12)
created:
6 days ago
visibility:
public

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