Hello,

Thank you for reading my message!

I have an applet, where I make two instances of the custom JPanel objects and I add them into two JFrames and display them. Both of these panels have a 10 x 10 grid of buttons and an event handler is added on each of those buttons. When I run the program, an applet window and two JFrames with 10 x 10 grids appear. When I click on a button in the first JPanel, an 'X' or an 'O' appears on the button. So far, so good.

What I want is the following:
After I click on a button in the first JPanel (say 10th button and 'X 'appears), I want the 10th button in the second JPanel to be immediately set to 'X'.

I would be grateful for any help. Please show me a sample program if I need a new concept to solve this problem. My files are below.

Thank you!

        import javax.swing.*;
        import java.awt.*;
        import java.awt.event.*;

        public class TictacToe extends JApplet
        {
            private BattleShipH h;
            private BattleShipC c;
            private JFrame frame1, frame2;

            public void init()
            {
                h = new BattleShipH();
                frame1 = new JFrame("Human");
                frame1.add(h);
                frame1.setSize(800, 600);
                frame1.setVisible(true);

                c = new BattleShipC();
                frame2 = new JFrame("Computer");
                frame2.add(c);
                frame2.setSize(800, 600);
                frame2.setVisible(true);

            }

        }



        import javax.swing.*;
        import java.awt.*;
        import java.awt.event.*;

        public class BattleShipH extends JPanel
        {
            private JButton[] buttons = new JButton [100];
            private GridLayout grid;
            private int cell = 0, click = 0;

            public BattleShipH ()
            {
                grid = new GridLayout (10, 10, 5, 5);
                setLayout(grid);

                for (int i = 0; i <100; i++)
                {
                    buttons[i] = new JButton (String.valueOf(i));
                    buttons[i].setBackground(Color.GRAY);
                    //buttons[i].setFont(new Font ("Times New Roman", Font.BOLD, 0));
                    //buttons[i].addActionListener (new Listener());

                    buttons[i].addActionListener (new ClickHandler());
                    add(buttons[i]);
                }

            }

            public void setClicked(int value)
            {
                cell = value;
                buttons[cell].setFont(new Font ("Times New Roman", Font.BOLD, 50));
                click++;
                if (click % 2 == 0)
                {
                    buttons[cell].setText("X");

                }
                else
                {
                    buttons[cell].setText("O");
                }

            }

            public int getClicked()
            {
                return cell;
            }
            private class ClickHandler implements ActionListener 
            {
                public void actionPerformed (ActionEvent e)
                {
                    JButton button = (JButton) e.getSource();
                    JOptionPane.showMessageDialog(null, "Here");
                    if (button.getText().equals("O") || button.getText().equals("X"))
                    {
                        JOptionPane.showMessageDialog (null, "Entry has already been made");

                    }

                    else
                    {
                        cell = Integer.parseInt(button.getText());
                        click++;
                        buttons[cell].setFont(new Font ("Times New Roman", Font.BOLD, 50));
                        if (click % 2 == 0)
                        {
                            buttons[cell].setText("X");

                        }
                        else
                        {
                            buttons[cell].setText("O");
                        }
                    }
                }
            }

        }


        import javax.swing.*;
        import java.awt.*;
        import java.awt.event.*;

        public class BattleShipC extends JPanel
        {
            private JButton[] buttons = new JButton [100];
            private GridLayout grid;
            private int cell = 0, click = 0;

            public BattleShipC ()
            {

                grid = new GridLayout (10, 10, 5, 5);
                setLayout(grid);

                for (int i = 0; i <100; i++)
                {
                    buttons[i] = new JButton (String.valueOf(i));
                    buttons[i].setBackground(Color.GRAY);
                    //buttons[i].setFont(new Font ("Times New Roman", Font.BOLD, 0));
                    buttons[i].addActionListener (new Listener());
                    add(buttons[i]);
                }

            }

            public void setClicked(int value)
            {
                cell = value;
                buttons[cell].setFont(new Font ("Times New Roman", Font.BOLD, 50));
                click++;
                if (click % 2 == 0)
                {
                    buttons[cell].setText("X");

                }
                else
                {
                    buttons[cell].setText("O");
                }

            }

            public int getClicked()
            {
                return cell;
            }
            private class Listener implements ActionListener 
            {
                public void actionPerformed (ActionEvent e)
                {
                    JButton button = (JButton) e.getSource();
                    if (button.getText().equals("O") || button.getText().equals("X"))
                    {
                        JOptionPane.showMessageDialog (null, "Entry has already been made");

                    }

                    else
                    {
                        cell = Integer.parseInt(button.getText());
                        click++;
                        buttons[cell].setFont(new Font ("Times New Roman", Font.BOLD, 50));
                        if (click % 2 == 0)
                        {
                            buttons[cell].setText("X");

                        }
                        else
                        {
                            buttons[cell].setText("O");
                        }

                    }
                }
            }

        }

Edited 2 Years Ago by sciprog22

Why the duplicated code in the two BattleShipX classes? At a quick look it looks like you should have an abstract superclass with all the common code, and have those 2 classes as subclasses, with pnly the methods that are different. (Or if the differences are just in data values, have 1 class with different instance variable values.)

Anyway, you can add a setButton(int cellNumber) method to those classes, then when you need to set a button you can do it in either or both panels by calling
h.setButton(cell);
and/or
c.setButton(cell);

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