使用 java.awt.Robot 可以抓取屏幕

import java.awt.AWTException;  import java.awt.Robot;  import java.awt.Rectangle;  import java.awt.Toolkit;  import java.awt.image.BufferedImage;  import java.io.*;  import javax.imageio.ImageIO;    class ScreenCapture {    public static void main(String args[]) throws             AWTException, IOException {       // capture the whole screen       BufferedImage screencapture = new Robot().createScreenCapture(             new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()) );         // Save as JPEG       File file = new File("screencapture.jpg");       ImageIO.write(screencapture, "jpg", file);         // Save as PNG       // File file = new File("screencapture.png");       // ImageIO.write(screencapture, "png", file);    }  }

可以指定要抓取的区域

BufferedImage screencapture = new Robot().createScreenCapture(     new Rectangle( 15, 15, 150, 150));

可以抓取指定控件：

BufferedImage image = new Robot().createScreenCapture(      new Rectangle( myframe.getX(), myframe.getY(),                     myframe.getWidth(), myframe.getHeight() ) );