Program: 24887
Project: 24887
Buggy source:
public GScreen(BlockingQueue<Printable[]> queue,KeyListener key,Stage stage,Hero player){
  this.key=key;
  this.stage=stage;
  this.player=player;
  this.queue=queue;
  game=new Container();
  game.setBounds(0,0,800,600);
  game.setVisible(true);
  play=new Canvas();
  play.setBounds(0,0,450,600);
  playBuffer=new BufferedImage(450,600,BufferedImage.TYPE_4BYTE_ABGR);
  playBufferGraphics=playBuffer.getGraphics();
  pauseBuffer=new BufferedImage(450,600,BufferedImage.TYPE_4BYTE_ABGR);
  pauseBufferGraphics=pauseBuffer.getGraphics();
  scoreBar=new Canvas();
  scoreBar.setBounds(450,0,800,600);
  scoreBar.setFocusable(false);
  scoreBuffer=new BufferedImage(350,600,BufferedImage.TYPE_4BYTE_ABGR);
  scoreBufferGraphics=scoreBuffer.getGraphics();
  pauseMenu=new PauseMenu();
  try {
    playBg=ImageIO.read(new File(imagePath + "String_Node_Str"));
    pauseBg=ImageIO.read(new File(imagePath + "String_Node_Str"));
    scoreBg=ImageIO.read(new File(imagePath + "String_Node_Str"));
    lifeImg=ImageIO.read(new File(imagePath + "String_Node_Str"));
    a=ImageIO.read(new File(imagePath + "String_Node_Str"));
    b=ImageIO.read(new File(imagePath + "String_Node_Str"));
    c=ImageIO.read(new File(imagePath + "String_Node_Str"));
    d=ImageIO.read(new File(imagePath + "String_Node_Str"));
    e=ImageIO.read(new File(imagePath + "String_Node_Str"));
    f=ImageIO.read(new File(imagePath + "String_Node_Str"));
  }
 catch (  IOException e) {
    System.err.println("String_Node_Str");
  }
  game.add(pauseMenu);
  game.add(play);
  game.add(scoreBar);
  game.addKeyListener(key);
  life=player.getLife();
}

Fixed version (ground truth):
public GScreen(BlockingQueue<Printable[]> queue,KeyListener key,final Stage stage,Hero player){
  this.key=key;
  this.stage=stage;
  this.player=player;
  this.queue=queue;
  game=new Container();
  game.setBounds(0,0,800,600);
  play=new Component(){
  }
;
  play.setBounds(0,0,450,600);
  playBuffer=new BufferedImage(450,600,BufferedImage.TYPE_4BYTE_ABGR);
  playBufferGraphics=playBuffer.getGraphics();
  pauseBuffer=new BufferedImage(450,600,BufferedImage.TYPE_4BYTE_ABGR);
  pauseBufferGraphics=pauseBuffer.getGraphics();
  scoreBar=new Component(){
  }
;
  scoreBar.setBounds(450,0,800,600);
  scoreBar.setFocusable(false);
  scoreBuffer=new BufferedImage(350,600,BufferedImage.TYPE_4BYTE_ABGR);
  scoreBufferGraphics=scoreBuffer.getGraphics();
  pauseMenu=new Container();
  pauseMenu.setBounds(0,0,450,600);
  try {
    playBg=ImageIO.read(new File(imagePath + "String_Node_Str"));
    pauseBg=ImageIO.read(new File(imagePath + "String_Node_Str"));
    scoreBg=ImageIO.read(new File(imagePath + "String_Node_Str"));
    lifeImg=ImageIO.read(new File(imagePath + "String_Node_Str"));
    a=ImageIO.read(new File(imagePath + "String_Node_Str"));
    b=ImageIO.read(new File(imagePath + "String_Node_Str"));
    c=ImageIO.read(new File(imagePath + "String_Node_Str"));
    d=ImageIO.read(new File(imagePath + "String_Node_Str"));
    e=ImageIO.read(new File(imagePath + "String_Node_Str"));
    f=ImageIO.read(new File(imagePath + "String_Node_Str"));
  }
 catch (  IOException e) {
    System.err.println("String_Node_Str");
  }
  list=new ItemList();
  list.add(a,b,new Runnable(){
    public void run(){
      gameContinue();
    }
  }
);
  list.add(c,d,new Runnable(){
    public void run(){
      EventConnect.dispatch("String_Node_Str");
    }
  }
);
  list.add(e,f,new Runnable(){
    public void run(){
      restart();
    }
  }
);
  OverlayLayout layout=new OverlayLayout(game);
  game.setLayout(layout);
  game.add(pauseMenu);
  game.add(play);
  game.add(scoreBar);
  game.addKeyListener(key);
  life=player.getLife();
}