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  * @version 1.0  *****************************************************/ public class Test {  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 Test() {  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 Test(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)  {  Test cam= new Test("d:\\Hello", "png");//  cam.snapShot();  } }