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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();
}
}