How to Capture screen shots in Java?

import java.awt.Dimension;

import java.awt.Rectangle;

import java.awt.Robot;

import java.awt.Toolkit;

import java.awt.image.BufferedImage;

import javax.imageio.ImageIO;

import java.io.File;

 

...

 

public void captureScreen(String fileName) throws Exception {

 

   Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();

   Rectangle screenRectangle = new Rectangle(screenSize);

   Robot robot = new Robot();

   BufferedImage image = robot.createScreenCapture(screenRectangle);

   ImageIO.write(image, "png", new File(fileName));

 

}