Do not use switch then.

public void keyPressed(KeyEvent e){

   if(e.getKeyCode() == KeyEvent.VK_UP){
	 up = true;
   }

   if(e.getKeyCode() == KeyEvent.VK_DOWN){
	 down = true;
   }
}

and then in the game loop just check

if(up){
   player.moveUp();
}

if(down){
   player.moveDown();
}

Should work.. that's the way i done it in some sidescrollers in java

Regards

Do not use switch then.

public void keyPressed(KeyEvent e){

if(e.getKeyCode() == KeyEvent.VK_UP){
	 up = true;
}
}

and then in the game loop just check

if(up){
player.moveUp();
}

Should work.. that's the way i done it in some sidescrollers in java

Regards