How to: Save jpg frames to swf animation.

Question

I create signatures for my friends to use in posts on forums
at the end of their messages.
Examples here:
http://s12.invisionfree.com/venvenaevici
Recently I decided to try animation, but saving in gif format
isnt allowing me to save with as much detail as I would like and
the backgrounds are comming out grainy and not smooth. After a
weeks worth of trouble shooting I think my solution is to save the
several .jpg files I have refined into a flash, but I dont know how
to do that. Can anyone help?
Also when it is saved I would like it to auto play and loop
like this gif animation I have. If only I could get it to save as
it looks on preview, or if I had proper training :/
Animation Example:
http://w3.the-kgb.com/venvenae/shalieeani.gif
Background Example without the animation of above:
http://w3.the-kgb.com/venvenae/shaliee.jpg
The program I used to get the animation frames in the first
place is called wow model viewer. Any assistance would be wonderful
and much appreciated and I would be willing to do a signature for
someone here that has helped me, if there is interst.
I wasnt sure where to post this. Im sorry if its in the wrong
place.

Answer 1

Sorry I was not in Station!!!!!and hence the delay in replying
Check this example for more details
public WriteImageIW( String filename, String type ) {
try {
int width = 200, height = 200;
int x0 = 20, y0 = 20, x1 = width-20, y1 = width-20;
BufferedImage bi = new BufferedImage( width, height,
BufferedImage.TYPE_INT_ARGB );
Graphics2D ig2 = bi.createGraphics();
GradientPaint paint =
new GradientPaint( x0, y0, Color.white, x1, y1, Color.black );
ig2.setPaint( paint );
ig2.fillRect( 0, 0, width-1, height-1 );
BasicStroke stroke = new BasicStroke( 10, BasicStroke.CAP_ROUND,
BasicStroke.JOIN_ROUND );
ig2.setPaint( Color.lightGray );
ig2.setStroke( stroke );
ig2.draw( new Ellipse2D.Double( x0, y0, x1-x0, y1-y0 ) );
Font font = new Font( "TimesRoman", Font.BOLD, 20 );
ig2.setFont( font );
String message = "Java2D!";
FontMetrics fontMetrics = ig2.getFontMetrics();
int stringWidth = fontMetrics.stringWidth( message );
int stringHeight = fontMetrics.getAscent();
ig2.setPaint( Color.black );
ig2.drawString( message, (width-stringWidth)/2,
height/2+stringHeight/4 );
Iterator imageWriters =
ImageIO.getImageWritersByFormatName( type );
ImageWriter imageWriter = (ImageWriter)imageWriters.next();
File file = new File( filename );
ImageOutputStream ios =
ImageIO.createImageOutputStream( file );
imageWriter.setOutput( ios );
imageWriter.write( bi );
} catch( IOException ie ) {
ie.printStackTrace();
the file is being created, the type of the file must be specified on the command line.