Tic Tac Toe creating method for action after every turn

src/main/java/src/TicTacToeGame.java

@@ -10,6 +10,7 @@ public class TicTacToeGame implements ActionListener {
     JPanel bt_panel = new JPanel();
     JLabel textfield = new JLabel();
     JButton[] bton = new JButton[9];
+    int chance_flag =0;
     Random random = new Random();
     boolean pl1_chance;
 
@@ -41,7 +42,7 @@ public class TicTacToeGame implements ActionListener {
         {
             bton[i] = new JButton();
             bt_panel.add(bton[i]);
-            bton[i].setFont(new Font("Serif", Font.BOLD, 120));
+            bton[i].setFont(new Font("Serif", Font.BOLD, 30));
             bton[i].setFocusable(false);
             bton[i].addActionListener(this);
             bton[i].setBackground(Color.cyan);
@@ -84,9 +85,37 @@ public class TicTacToeGame implements ActionListener {
 
 
 
-    //Method for perfoming action after every turn
+    //Method for performing action after every turn
     @Override
     public void actionPerformed(ActionEvent e) {
-
+        for (int i = 0; i < 9; i++)
+        {
+            if (e.getSource() == bton[i])
+            {
+                if (pl1_chance)
+                {
+                    if (bton[i].getText() == "")
+                    {
+                        bton[i].setForeground(new Color(0, 188, 255));
+                        bton[i].setText("X");
+                        pl1_chance = false;
+                        textfield.setText("O turn");
+                        chance_flag++;
+                    }
+                }
+                else
+                {
+                    if (bton[i].getText() == "")
+                    {
+                        bton[i].setForeground(new Color(0, 255, 9));
+                        bton[i].setText("O");
+                        pl1_chance = true;
+                        textfield.setText("X turn");
+                        chance_flag++;
+
+                    }
+                }
+            }
+        }
     }
 }