Storing images to persistent storage

Question

Hi all
Does anyone know a good tutorial for storing images to persistent storage?
I am comfortable in the process of storing items such as int and string etc.
writeUTF ()
readUTF()
etc...But i cannot see how to store an image? and the inverse how to load the image back up.
Mainly my lack of knowledge hinges on the fact that I do not know how to convert an Image to a byte array and make an image from a byte array?
Then using this byte array what methods I uses from the DataOutputStream and DataInputStream for population?
If anyone knows or can help would be very grateful?
jimbobegg

Answer 1

For anyone concerned heres a solution I used in its own class:
public static void convertImageAndStore( Image photo, DataOutputStream daos )
     int imageWidth, imageHeight;
     imageWidth = photo.getWidth();
     imageHeight = photo.getHeight();
     int[] imgRgbData = new int[ imageWidth * imageHeight ];
     try
          photo.getRGB(imgRgbData, 0, imageWidth, 0, 0, imageWidth, imageHeight );
          //Start to write the different parts to the
          //DataOutputStream
          daos.writeInt( imageWidth );
                daos.writeInt( imageHeight );
                daos.writeInt( imgRgbData.length );
                //Serialize image and store
                //Serialize the image raw data
                for (int i=0; i<imgRgbData.length; i++)
                    daos.writeInt(imgRgbData);
     catch( Exception exc )
          System.err.println( "Exception thrown by Utility::convertImageAndStore()");