Java SE (Java Platform, Standard Edition)

hi have anyone an idea how can i make screenshoot from my scene without the class robot?

at moment i use the Robot class to make screenshoots from my sceene

Rectangle screenRect = new Rectangle(20,10,800,600);
	    try{
	    	Robot robot = new Robot();
	    	BufferedImage image = robot.createScreenCapture(screenRect);
	    	ImageIO.write(image, "png", new File(fileName));	    	  
	    } catch (AWTException e1) {} 
                      catch (IOException e) {}	    

thats the code to make screenshoots but i think its not good to use AWT