Java Applet能否用JAI来读写、显示BMP格式的图像？

Question

想用Java Applet做一个显示、编辑BMP位图的小程序，但发现AWT中的Image类只支持JPEG和GIF格式，而JAI支持BMP等多种格式图像的读写、显示。小弟想问，JAI能否用在Java Applet中，如果不能，又有什么替代办法用来读写、显示BMP图像呢？请大虾指点，谢谢。

Answer 1

当然可以。本人用过advanced imaging，的确不错。以下是显示bmp的代码：
     import java.awt.Frame;
     import java.awt.image.renderable.ParameterBlock;
     import java.io.IOException;
     import javax.media.jai.Interpolation;
     import javax.media.jai.JAI;
     import javax.media.jai.RenderedOp;
     import com.sun.media.jai.codec.FileSeekableStream;
     import javax.media.jai.widget.ScrollingImagePanel;     /**
      * This program decodes an image file of any JAI supported
      * formats, such as GIF, JPEG, TIFF, BMP, PNM, PNG, into a
      * RenderedImage, scales the image by 2X with bilinear
      * interpolation, and then displays the result of the scale
      * operation.
      */
     public class JAISampleProgram {         /** The main method. */
         public static void main(String[] args) {
             /* Validate input. */
             if (args.length != 1) {
                 System.out.println("Usage: java JAISampleProgram " +
                                    "input_image_filename");
                 System.exit(-1);
             }             /*
              * Create an input stream from the specified file name
              * to be used with the file decoding operator.
              */
             FileSeekableStream stream = null;
             try {
                 stream = new FileSeekableStream(args[0]);
             } catch (IOException e) {
                 e.printStackTrace();
                 System.exit(0);
             }             /* Create an operator to decode the image file. */
             RenderedOp image1 = JAI.create("stream", stream);
             /*
              * Create a standard bilinear interpolation object to be
              * used with the "scale" operator.
              */
             Interpolation interp = Interpolation.getInstance(
                                        Interpolation.INTERP_BILINEAR);             /**
              * Stores the required input source and parameters in a
              * ParameterBlock to be sent to the operation registry,
              * and eventually to the "scale" operator.
              */
             ParameterBlock params = new ParameterBlock();
             params.addSource(image1);
             params.add(2.0F);         // x scale factor
             params.add(2.0F);         // y scale factor
             params.add(0.0F);         // x translate
             params.add(0.0F);         // y translate
             params.add(interp);       // interpolation method             /* Create an operator to scale image1. */
             RenderedOp image2 = JAI.create("scale", params);             /* Get the width and height of image2. */
             int width = image2.getWidth();
             int height = image2.getHeight();             /* Attach image2 to a scrolling panel to be displayed. */
             ScrollingImagePanel panel = new ScrollingImagePanel(
                                             image2, width, height);             /* Create a frame to contain the panel. */
             Frame window = new Frame("JAI Sample Program");
             window.add(panel);
             window.pack();
             window.show();
         }
     }