JPanel Resizes Self

Question

This is from fairly large code so I'm trying to pull the important stuff out of two classes:
MainM.class:
    private void bPlayActionPerformed(java.awt.event.ActionEvent evt) {
        game=new Game(WD+"\\songs\\"+cmbSong.getSelectedItem(),this,settings.FPS,getWidth(),getHeight());
        JPMain.setVisible(false);
        java.awt.GridBagConstraints gc=new java.awt.GridBagConstraints();
        gc.gridx=0;gc.gridy=0;
        getContentPane().add(game,gc);
        game.animator.start();
    }Game.class:
    public Game(String SongFile, MainM JMain, int iFPS, int Width, int Height) {
        addKeyListener(this);
        setVisible(true);
        setMinimumSize(new Dimension(Width,Height));
        setSize(Width,Height);
        animator=new Thread(this);
    public void run() {
        // Remember the starting time
        long tm = System.currentTimeMillis();
        while (Thread.currentThread() == animator) {
            // Display the next frame of animation.
            manpaint();
            // Delay depending on how far we are behind.
            try {
                tm += 1000/FPS;
                Thread.sleep(Math.max(0, tm - System.currentTimeMillis()));
            } catch (InterruptedException e) {
                break;
            // Advance the frame
            CurBeat+=BPF;
    public void manpaint() {
        Graphics g=getGraphics();
        int x,y,xunit,yunit,dx,dy;
        xunit=getWidth()/ScaleX;
        yunit=getHeight()/ScaleY;
        // Now draw the image scaled.
        System.out.println(getWidth());
        g.drawImage(Pics[0],0,0,getWidth(),getHeight(),this);
        g.drawImage(Pics[1],ScaleX*(CurTrack*(ScaleX/10)),yunit*(ScaleY-7),yunit*10,yunit*4,this);
        for(x=0;x<Tracks.length;x++){
            for(y=0;y<Tracks[x].CurBeats.length;y++){
                if (Tracks[x].CurBeats[y][0]!=-1){
                    dx=xunit*(x*(ScaleX/Tracks.length))+xunit*x+xunit*3*Tracks[x].CurBeats[y][1];
                    dy=yunit*y+yunit*(-2)+(int)(yunit*(CurBeat-(int)CurBeat));
                    g.drawImage(Pics[2],dx,dy,xunit*2,yunit*2,this);
        update(g);
    }And the problem is:
In this last method there is a line "System.println.(getwidth());" for the first time it prints 400, the correct width, but after the first print it starts printing 10's, so in accordance, on the screen it draws the first frame correctly and then refreshes a tiny fram in the center of the screen 10 pixels wide and tall. There is no code to resize this panel other than when it is initialized, is there any reason it should be resizing itself?

Answer 1

solved the resizing problem, have to set preferred size instead of just using setsize (for the record)