public class PlayerField extends JFrame
   {
      private boolean clicked;
      private int inputCoords[] = new int[2]; //[0] = x coord, [1] = y coord
      private Button[][] buttons = new Button[8][8];

       public PlayerField()
      {
         setTitle("Player Field");
         setSize(300, 300);
         setDefaultCloseOperation(EXIT_ON_CLOSE);
         setLocationRelativeTo(null);
          
         JPanel panel = new JPanel();
         panel.setBackground(Color.BLACK);
         panel.setLayout(new GridLayout(8, 8, 2, 2));      
          
         for (int x = 0; x < 8; x++)
         {
            for (int y = 0; y < 8; y++)
            {
               buttons[x][y] = new Button();
               buttons[x][y].setActionCommand((x+1) + " " + (y+1));
               buttons[x][y].setBackground(Color.CYAN);
               panel.add(buttons[x][y]);
            }
         }                 
         setContentPane(panel);          
      }

  private void menuBarPanel() {
    JPanel menuPanel = new JPanel();
    menuPanel .setLayout(new FlowLayout());
    
    JMenuBar menuBar = new JMenuBar();
    JMenu menu = new JMenu("My Menu");
    menu.setMnemonic(KeyEvent.VK_A);
    menu.getAccessibleContext().setAccessibleDescription("My Items");
    menuBar.add(menu);
    //add your items to the menu

    menuPanel.add(menuBar, 0);
  }
}

private void mainPanel(){
        JComponent mainPanel = new JPanel();
        mainPanel.setLayout(new BorderLayout(5, 5));
        mainPanel.add(menuPanel, BorderLayout.NORTH);
        //then other panels
        add(mainPanel);
}

public PlayerField()
      {
         setTitle("Player Field");
         setSize(300, 300);
         setDefaultCloseOperation(EXIT_ON_CLOSE);
         menuBarPanel();
         //other panels
         mainPanel();
        }