Problem with dimension of an image loaded from a database

Question

Hi,
I succeed in saving image in a MSAccess database with this code:
Image img;
image = new ImageIcon("d:\\prova\\comore.jpg");
img=image.getImage();
try{
int[] pix = new int[img.getWidth(null) * img.getHeight(null)];
PixelGrabber pg = new PixelGrabber(img, 0, 0, img.getWidth(this), img.getHeight(this), pix, 0, img.getWidth(this));
pg.grabPixels();
System.out.println(pix.length);
byte[] pixels = new byte[img.getWidth(this) * img.getHeight(this)*4];
for(int j=0;j<pix.length;j++){
pixels[j] = new Integer(pix[j]).byteValue();
String sql="insert into Immagini values ('1',?)";
PreparedStatement ps = con.prepareStatement(sql);
ps.setBytes(1,pix);
ps.executeUpdate();
}catch(Exception except){
except.printStackTrace();
then, I've load the image with this code:
try{
String query = "select * from Immagini where IDprog = 1";
Statement s = con.createStatement();
s.executeQuery(sql);
ResultSet rs=s.getResultSet();
rs.next();
Viaggio vi = new Viaggio(rs.getInt(1),rs.getBytes(2));
byte[] b=vi.getBytesImage();
int[] intImage = new int[b.length];
for(int j=0;j<b.length;j++){
intImage[j]=(int)b[j];
Image img = createImage(new MemoryImageSource(124,100,intImage,0,124));
ImageIcon imgic = new ImageIcon(img);
jLabel3.setIcon(imgic);
}catch(Exception tps){
tps.printStackTrace();
All works correctly;
but I've two problems:
How do I do to take the dimension of the image from the byte array?
infact in the code up written I've used 124 and 100 as image dimension;
but I can have images of different dimension.
The other problem is:
Why in the image that is loaded are not the same number of colors of the image saved, but only a few, so that the image seems to be out of focus?
Thank and excuse me for my english.
I'm Italian.

Answer 1

Noone can help me?
Thank