Keyboard reading problem

Question

I created a game by exending Canvas and when I run it, everything works normal when I run the program.
I created seperate GUI for the game by extending JFrame and created the buttons in it for "new game", "reload", "view score"...etc.
In order to start a new game, I called a new Game object in the actionPerformed method in the GUI object.
The problem arises here. Although the game works correctly when run seperately, the keyboard key are not working when a Game object is invoked from GUI object "New Game" button. It does create the object and display, only thing is that the keyboard keys do not work when invoked from GUI object.
My game class is like this-->public class Game extends Canvas {
with an inner class -->private class KeyInputHandler extends KeyAdapter {
keypressed and the other two methods are implemented like this:
public void keyPressed(KeyEvent e) {                              
               if (e.getKeyCode() == KeyEvent.VK_LEFT ) {
                    leftPressed = true;
               }GUI class is like this --> public class MainMenu extends JFrame implements ActionListener
Could any one please tell me whether I need to make a keyboard key input handler again in the GUI class to play the game (although it is already implemented in the Game object).
If so, what is the best method?
Thanks a lot for all your support.

Answer 1

My "New Game" button code is like this at the moment. The Game class extends Canvas.
I did call requestfocus after creating the Game object. It still does not work.
Is it possible to request focus on a Canvas?
It seems that, when the Game object is called from GUI, the inner class in Game is not reached.
     private class KeyInputHandler extends KeyAdapter
Is it possible to access this inner class of Game class from the GUI class?.
public void actionPerformed(ActionEvent ae)
          if(ae.getSource() == newButton)
     g=new Game();          
g.requestFocus();
          }