import java.awt.AWTException;

import java.awt.Rectangle;

import java.awt.Robot;

import java.awt.Toolkit;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import java.text.SimpleDateFormat;

import java.util.GregorianCalendar;

import javax.imageio.ImageIO;

import org.openqa.selenium.WebDriver;

import org.openqa.selenium.firefox.FirefoxDriver;

/*

 * 

 * Taking a screenshot using Robot class in java rather than 

 * TakesScreenshot Interface in Selenium Webdriver.

 *

 */

public class CaptureFullScreen {

public static void main(String[] args) throws AWTException {

try 

{

WebDriver driver = new FirefoxDriver();

driver.get("http://www.google.com");

//Implementing the Robot Class

Robot robot = new Robot();

String format = "jpg";  

String imgFileName= new SimpleDateFormat("mm-dd-yyyy_HH-ss").

format( new GregorianCalendar().getTime());

System.out.println(new GregorianCalendar().getTime());

Rectangle screenRect = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());

BufferedImage screenFullImage = robot.createScreenCapture(screenRect);

ImageIO.write(screenFullImage, format, new File("d:\\"+imgFileName+".jpg"));

System.out.println("Screenshot Saved in today's date format in d:\\");

} 

catch (  IOException ex)

{

System.err.println(ex);

}

}

}

Output: