java 屏幕截图

public static void captureScreen(String fileName) throws Exception {

  Toolkit.getDefaultToolkit().getScreenSize(); 

    Rectangle screenRectangle = new Rectangle(100, 100); 

    Robot robot = new Robot(); 

    BufferedImage image = robot.createScreenCapture(screenRectangle);

    ImageIO.write(image, "png", new File(fileName));

}

来自 http://lxc914-java.iteye.com/blog/1343238

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