Implement basic Tic-Tac-Toe GUI using Swing

Author: bitflicker64

tictactoegui.java

@@ -0,0 +1,91 @@
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+public class TicTacToeGUI {
+    private JFrame frame;
+    private JButton[] buttons = new JButton[9];
+    private char currentPlayer = 'X';
+
+    public static void main(String[] args) {
+        SwingUtilities.invokeLater(TicTacToeGUI::new);
+    }
+
+    public TicTacToeGUI() {
+        frame = new JFrame("Tic-Tac-Toe");
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setSize(400, 400);
+        frame.setLayout(new GridLayout(3, 3));
+
+        initializeButtons();
+
+        frame.setVisible(true);
+    }
+
+    private void initializeButtons() {
+        for (int i = 0; i < 9; i++) {
+            buttons[i] = new JButton("");
+            buttons[i].setFont(new Font("Arial", Font.BOLD, 60));
+            buttons[i].setFocusPainted(false);
+            buttons[i].addActionListener(new ButtonClickListener(i));
+            frame.add(buttons[i]);
+        }
+    }
+
+    private void resetGame() {
+        for (JButton button : buttons) {
+            button.setText("");
+            button.setEnabled(true);
+        }
+        currentPlayer = 'X';
+    }
+
+    private boolean checkWinner() {
+        int[][] winPatterns = {
+            {0, 1, 2}, {3, 4, 5}, {6, 7, 8}, // Rows
+            {0, 3, 6}, {1, 4, 7}, {2, 5, 8}, // Columns
+            {0, 4, 8}, {2, 4, 6}             // Diagonals
+        };
+
+        for (int[] pattern : winPatterns) {
+            if (!buttons[pattern[0]].getText().isEmpty() &&
+                buttons[pattern[0]].getText().equals(buttons[pattern[1]].getText()) &&
+                buttons[pattern[1]].getText().equals(buttons[pattern[2]].getText())) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private boolean isBoardFull() {
+        for (JButton button : buttons) {
+            if (button.getText().isEmpty()) return false;
+        }
+        return true;
+    }
+
+    private class ButtonClickListener implements ActionListener {
+        private final int index;
+
+        public ButtonClickListener(int index) {
+            this.index = index;
+        }
+
+        @Override
+        public void actionPerformed(ActionEvent e) {
+            buttons[index].setText(String.valueOf(currentPlayer));
+            buttons[index].setEnabled(false);
+
+            if (checkWinner()) {
+                JOptionPane.showMessageDialog(frame, "Player " + currentPlayer + " wins!");
+                resetGame();
+            } else if (isBoardFull()) {
+                JOptionPane.showMessageDialog(frame, "It's a draw!");
+                resetGame();
+            } else {
+                currentPlayer = (currentPlayer == 'X') ? 'O' : 'X';
+            }
+        }
+    }
+}