Dale Mitchell

I worked for three years doing web and server-side java projects (traditional enterprise sysytems). However, for the last year, I have worked in a completely different realm (instrument control) including developing swing guis connecting to various servers via rmi and corba that has nothing to do with the web. Being diversified with sound OO experience is never a drawback. I think that the Sun developer's exam is closer than the other tests to making you think how to solve a problem.

Determine image size and create a byte[] to hold it from the stream. Once loaded you can directly create the image by using either creating a new ImageIcon using one of the constructors that take a byte[] or using Toolkit.createImage(byte[] imageData)

Depending on what you want to do with the image you could convert the BufferedImage into some other format. In jdk1.2 and 1.3 there is a package called com.sun.image.codec.jpeg that can encode your BufferedImage into a JPEG. This image can be sent via RMI. On the other end, you can use this image as is or use the JPEGImageDecoder class to create a BufferedImage from the transported byte[].
import java.io.*; import java.awt.image.*; import com.sun.image.codec.jpeg.*; public class TransportableImage implements Serializable{ private byte[] imageBytes; private transient BufferedImage bufferedImage; //Constructor converts BufferedImage into a JPEG //Storing the data in imageBytes[] public TransportableImage(BufferedImage bufferedImage) throws IOException{ this.bufferedImage = bufferedImage; ByteArrayOutputStream bos = new ByteArrayOutputStream(); JPEGImageEncoder jpg = JPEGCodec.createJPEGEncoder(bos); jpg.encode(bufferedImage); bos.flush(); imageBytes = bos.toByteArray(); bos.close(); } //Reconstruct the BufferedImage public BufferedImage createBufferedImage() throws IOException{ InputStream is = new ByteArrayInputStream(imageBytes); JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(is); BufferedImage image = decoder.decodeAsBufferedImage(); is.close(); return image; } //Save a JPEG image public void toFile(String name) throws IOException{ FileOutputStream os = new FileOutputStream(name); os.write(imageBytes, 0, imageBytes.length); os.flush(); os.close(); } }

Dale