JAVA监听屏幕内容

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

public class ScreenCapture {
    public static void main(String[] args) {
        try {
            Robot robot = new Robot();
            Rectangle screenRect = new Rectangle(Toolkit.getDefaultToolkit().getScreenSize());
            BufferedImage screenCapture = robot.createScreenCapture(screenRect);
            ImageIO.write(screenCapture, "png", new File("screenshot.png"));
            System.out.println("屏幕截图已保存到screenshot.png");
        } catch (AWTException | IOException ex) {
            System.err.println(ex);
        }
    }
}