Listening for multiple keypresses simultaneously

Question

I'm trying to move a rectangle around with arrow keys.
The current code of keyPressed method is
     public void keyPressed(KeyEvent e){
/*           switch(e.getKeyCode()){
               case 37: x=(Math.max(0,x-3));break;
               case 38: y=Math.max(0,y-3); break;
               case 39: x=Math.min(200,x+3);break;
               case 40: y=Math.min(200,y+3);break;
          int a = e.getKeyCode();
          if(a == 37){x=Math.max(0,x-3);}
          if(a == 38){y=Math.max(0,y-3);}
          if(a == 39){x=Math.min(200,x+3);}
          if(a == 40){y=Math.min(200,y+3);}
          repaint();
     }The problem is that when pressing multiple keys at the same time only one registers.
So how do I register multiple key presses ad change x and y accordingly?
thank you

Answer 1

It seems to me that the problems mentioned in that link with the "hold" could be solved with using a state flag set on keyPressed and then reset on keyReleased. When you release even one you should get the keyReleased event and until then, you should be in a hold state.