How take Screenshot in java Program

       
package com.trail;


import java.awt.AWTException;
import java.awt.Dimension;
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 javax.imageio.ImageIO;
 

public class FullScreenCaptureExample {
 
    public static void main(String[] args) {
        try {
            Robot robot = new Robot();
            String format = "jpg";
            String fileName = "PartialScreenshot." + format;
             
            Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
            Rectangle captureRect = new Rectangle(0, 0, screenSize.width / 2, screenSize.height / 2);
            BufferedImage screenFullImage = robot.createScreenCapture(captureRect);
            ImageIO.write(screenFullImage, format, new File(fileName));
             
            System.out.println("A partial screenshot saved!");
        } catch (AWTException | IOException ex) {
            System.err.println(ex);
        }
    }
}
 

It will show as....