class Mode3x3{
    private int height;
    Mode3x3(Graphics g){
        Board board3x3 =new Board(3, g, 100,20, 2, false);
        height = board3x3.height;
    }
    public int getHeight(){
        return height;
    }
}

class Board extends Thread{
        private int ilosc, size, position, x, y;
        private double skala;
        public int height;
        private Graphics g;
     Board(int size, Graphics g, int x, int y, double skala, boolean boki){
         g.setColor(Color.black);
         this.ilosc=size;
         this.skala=skala;
         this.x=x;
         this.y=y;
         this.position=(int) (40 * this.skala);
         this.g=g;
         if(boki){
             this.position = 0;
             this.ilosc =size+2;
         }
         this.height =(int) (skala*size*40.5+position+30);
         start();
         System.out.println("Ilosc watkow:"+Thread.activeCount());
        }
     public void run(){
         System.out.println("run ilosc:n"+this.ilosc);
          for (int i=1; i<this.ilosc; ++i, this.position +=40*skala){
                 g.drawString("dziala!!", this.x, this.y+111);
                 g.fillRoundRect(this.position+this.x, 40+this.y , 3,(int) (this.skala * this.size * 40.5), 2, 2);
                 g.fillRoundRect(this.x, 40+position+this.y ,(int) (this.skala * this.size * 40.5), 3, 2, 2);
         //draw();
     }
     }
}





(w głownej klasie to:)

public void paint(Graphics g){
      Mode3x3 play3x3 = new Mode3x3(g);