一段截屏的代码

    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; <p>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 (<a href='mailto:[e-mail]'>[e-mail]</a>)
    * @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();
     }
     }</p>