🚀 go-pugleaf

Dear all,
I create an application which read all gif image in a directory and
animate them with a Runnable class

AnimImage1 animIm1 = new AnimImage1("image\\satetir",);
   jPlaceImage.add(animIm1);
   animIm1.start();
......................
AnimImage1 animIm1 = new AnimImage1("image\\satetfr");
   jPlaceImage.add(animIm1);
   animIm1.start();
.................................
AnimImage1 animIm1 = new AnimImage1("image\\radar");
   jPlaceImage.add(animIm1);
   animIm1.start();
..........................
and so on .
All Thread are executed with a JButton action. An i stop each Thread  before
create a new.
I use a mediatracker and a array of image.
my first question is why the memory regulary increase after each thread?
is a mediatracker reason ???

After a certain time, i decide to display an image,rotated and scaled
and i have the message following.

java.lang.awt.OutOfMemory
> at.java.awt.EventQueue.dispatchEvent(EventQueue.java:258)
> at.java.EventDispatchThread.run(EventDispatch.Thread:68)

my code is:
public void paint(Graphics g)
  {
Graphics g2 =(Graphics2D)g;
  Dimension d = this.getSize();

   // On test si l'image est plus grande que la fenetre qui va la recevoir
   // si c'est le cas on essaye de la r�duire
   int largeurImage,hauteurImage;
   int largeurCadre,hauteurCadre;
   largeurImage=image.getWidth(null);
   hauteurImage=image.getHeight(null);
   largeurCadre=d.width;
   hauteurCadre=d.height;
   double scale=(double)hauteurCadre/(double)image.getHeight(null);
     if(image.getWidth(null) > image.getHeight(null)) {
        scale =(double)hauteurCadre/(double)image.getHeight(null);
     }
   AffineTransform   at = new AffineTransform();
  if(scale < 1.0) at.scale(scale,scale);
  at.rotate(Math.PI / 2.0);
  at.translate(0,-largeurCadre/scale);
  g2D.drawImage(image,at,this) ;
  g2D.dispose();
  return;
  }

the reason of my problem is probably that the painting code can't be
executed quickly.
is that true? and how can i resolve that efficiently?
thank's
JP BALLET