In this program we will see how we can take screenshots using a java program and save the screenshot in desired folder.
We use java.awt.Robot class to capture pixels of screen. It provides method like createScreenCapture which captures the current screen. This method returns captured image as BufferedImage object which can be saved as a file. It also uses ImageIO to save it as PNG image format. Toolkit.getDefaultToolkit().getSize() method is used to get the size of screen.
The serialVersionUID is universal version identifier for Serializable class. Thread is used so that after executing the program we can switch to the screen we want to take screenshot of. 120s is the time in seconds i.e. 2 mins.
NOTE : Please keep note of UpperCase and LowerCase in name of methods. A slight change of Case may cause errors.
How to use the program to capture Screenshot :
- Write program in Notepad.
- Save it as Screenshot.java and run it on CommandPrompt.
- Refer to the screenshots at end in case of any problem.
// Java Program to Capture full// Image of Screenimport java.awt.AWTException;import java.awt.Rectangle;import java.awt.Toolkit;import java.awt.Robot;import java.awt.image.BufferedImage;import java.io.IOException;import java.io.File;import javax.imageio.ImageIO; public class Screenshot { public static final long serialVersionUID = 1L; public static void main(String[] args) { try { Thread.sleep(120); Robot r = new Robot(); // It saves screenshot to desired path // Used to get ScreenSize and capture image Rectangle capture = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()); BufferedImage Image = r.createScreenCapture(capture); ImageIO.write(Image, "jpg", new File(path)); System.out.println("Screenshot saved"); } catch (AWTException | IOException | InterruptedException ex) { System.out.println(ex); } }} |
Output :
References:
http://viralpatel.net/blogs/how-to-take-screen-shots-in-java-taking-screenshots-java/
http://www.javatechblog.com/java/how-to-take-screenshot-programmatically-in-java/
