如何使用java捕获其他应用程序的选定屏幕？

import java.awt.AWTException;
import java.awt.Rectangle;
import java.awt.Robot;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;

public static BufferedImage captureScreen(Rectangle screenRect) throws AWTException {
    Robot robot = new Robot();
    return robot.createScreenCapture(screenRect);
}

try {
    Rectangle screenRect = new Rectangle(0, 0, 800, 600);
    BufferedImage capturedImage = captureScreen(screenRect);
    ImageIO.write(capturedImage, "png", new File("captured_image.png"));
} catch (AWTException | IOException e) {
    e.printStackTrace();
}