output: #fixed code
                               void findTarget(final String patFilename, final Location initOffset) {
  		Thread thread = new Thread(new Runnable() {
  			@Override
  			public void run() {
          Region screenUnion = Region.create(0, 0, 1, 1);
  				Finder f = new Finder(_simg, screenUnion);
  				try {
  					f.find(patFilename);
  					if (f.hasNext()) {
  //TODO rewrite completely for ScreenUnion
              Screen s = (Screen) screenUnion.getScreen();
              s.setAsScreenUnion();
  						_match = f.next();
              s.setAsScreen();
  						if (initOffset != null) {
  							setTarget(initOffset.x, initOffset.y);
  						} else {
  							setTarget(0, 0);
  						}
  					}
  					_img = ImageIO.read(new File(patFilename));
  				} catch (IOException e) {
  					Debug.error(me + "Can't load " + patFilename);
  				}
  				synchronized (PatternPaneTargetOffset.this) {
  					_finding = false;
  				}
  				repaint();
  			}
  		});
  		thread.start();
  	}
input: #vulnerable code 
                               void paintLoading(Graphics2D g2d) {
  		int w = getWidth(), h = getHeight();
  		g2d.setColor(new Color(0, 0, 0, 200));
  		g2d.fillRect(0, 0, w, h);
  		BufferedImage spinner = _loading.getFrame();
  		g2d.drawImage(spinner, null, w / 2 - spinner.getWidth() / 2, h / 2 - spinner.getHeight() / 2);
  		repaint();
  	} 
                              #location 5 
                              #vulnerability type THREAD_SAFETY_VIOLATION