import java.awt.Dimension;

 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;

 /*******************************************************************

 * 该JavaBean可以直接在其他Java应用程序中调用，实现屏幕的"拍照"

 * This JavaBean is used to snapshot the GUI in a

 * Java application! You can embeded

 * it in to your java application source code, and us

 * it to snapshot the right GUI of the application

 * @see javax.ImageIO

 * @author liluqun (liluqun@263.net)

 * @version 1.0

 *

 *****************************************************/

 public class GuiCamera

 {

     private String fileName; //文件的前缀

     private String defaultName = "GuiCamera";

     static int serialNum=0;

     private String imageFormat; //图像文件的格式

     private String defaultImageFormat="png";

     Dimension d = Toolkit.getDefaultToolkit().getScreenSize();

     /****************************************************************

      * 默认的文件前缀为GuiCamera，文件格式为PNG格式

      * The default construct will use the default

      * Image file surname "GuiCamera",

      * and default image format "png"

      ****************************************************************/

     public GuiCamera() {

       fileName = defaultName;

       imageFormat=defaultImageFormat;

     }

     /****************************************************************

      * @param s the surname of the snapshot file

      * @param format the format of the  image file,

      * it can be "jpg" or "png"

      * 本构造支持JPG和PNG文件的存储

      ****************************************************************/

     public GuiCamera(String s,String format) {

       fileName = s;

       imageFormat=format;

     }

     /****************************************************************

      * 对屏幕进行拍照

      * snapShot the Gui once

      ****************************************************************/

     public void snapShot() {

       try {

       //拷贝屏幕到一个BufferedImage对象screenshot

         BufferedImage screenshot = (new Robot()).createScreenCapture(new

             Rectangle(0, 0, (int) d.getWidth(), (int) d.getHeight()));

         serialNum++;

         //根据文件前缀变量和文件格式变量，自动生成文件名

         String name=fileName+String.valueOf(serialNum)+"."+imageFormat;

         File f = new File(name);

         System.out.print("Save File "+name);

       //将screenshot对象写入图像文件

         ImageIO.write(screenshot, imageFormat, f);

         System.out.print("..Finished!\n");

       }

       catch (Exception ex) {

         System.out.println(ex);

       }

     }

     public static void main(String[] args)

     {

         GuiCamera cam= new GuiCamera("d:\\Hello", "png");//

         cam.snapShot();

     }

 }