자바 현재 화면 캡쳐

import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.io.File;
 
import javax.imageio.ImageIO;
 
public class CaptureSample {
 
    public static void main(String[] args) {
        String saveFilePath = "C:/";
        String saveFileName = "test";
        String saveFileExtension = "png";
        
        try {
            Robot robot = new Robot();
            Rectangle rectangle = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
            BufferedImage image = robot.createScreenCapture(rectangle);
            image.setRGB(0,0,100);
            
            File file = new File(saveFilePath+saveFileName+"."+saveFileExtension);
            ImageIO.write(image, saveFileExtension, file);
        } catch (Exception e){
            e.printStackTrace();
        }
    }
}