How set ctrl +a event for Jbutton and esc event for closing jinternal frame

i am doing desktop project in that i need set ctrl event for button ,i am strucking in that area pls anybody help me to overcome this problem ,and also i need button in table when i press button it has to fill value in the next field ,its urgent please

Read the section from the Swing tutorial on [How to Use Key Bindings|http://java.sun.com/docs/books/tutorial/uiswing/TOC.html]

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basically, i doing a three level game. 1st level is dodging the stone from sky, Secondly, samsh the wolf head. However, when i enter leve1 2 game, it show me an error.
TypeError: Error #2007: Parameter hitTestObject must be non-null.as:113 Cant access to null object or reference.as.83
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package
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          import flash.events.KeyboardEvent;
          import flash.ui.Keyboard;
          import flash.events.Event;
          import flash.events.MouseEvent;
          import flash.ui.Mouse;
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          import flash.events.TimerEvent;
          import flash.events.Event;
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                                        vy=5;
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                                        vx=0;
                              else if (event.keyCode==Keyboard.DOWN || event.keyCode==Keyboard.UP)
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                              trace(player);
                              trace(cursor);
                              trace(aaa);
                              trace(wolf2);
                              trace(wolf);
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                              player.x+=vx; <-------------------------------------------------------------this is line 83
                              player.y+=vy;
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                              if (stone.hitTestObject(player))
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                                        score++;
                                        messageDisplay.text=String(score);
                                        collisionHasOccurred=true;
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                              player.gotoAndStop(1);
                              collisionHasOccurred=false;
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                              New.text="Game Over!";
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                              player.x-=vx;
                              player.y-=vy;
                    if (player.hitTestObject(wallA))
                              player.x-=vx;
                              player.y-=vy;
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                              player.y-=vy;
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                              player.x-=vx;
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instead of:
if (player.hitTestObject(wall))
use:
if(player&&wall){
if (player.hitTestObject(wall))

How set ctrl +a event for Jbutton and esc event for closing jinternal frame

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