swing - Java Application : repaint isn't executed in While Loop? -

i've got thread supposed update game's elements, i.e. repaint, wait bit of time again, problem doesn't repaint. i've tested every other component, works, paint method called once ( because components painted ), if call repaint() in loop. here's code of loop:

thread t = new thread(){ public void run()     {         mouse.init();         while(true)         {                                                 mouse.refresh();//adds dirty regions in repaintmanager            swingutilities.invokelater(new runnable() {            @override         public void run() {                         //what here?         }     });           }                 } }; 

no need see thread or anything, loops.

here's paint method :

   @override public void paint(graphics g) {              endtime = system.currenttimemillis();//for fps counter     time = endtime - starttime;     fps = (byte) (1000/time);        totalfps += fps;     totalframe++;                jpt.averagefps.settext( "" + totalfps/totalframe);             jpt.currentfps.settext( "" + fps);     starttime = system.currenttimemillis();      g.clearrect(0,0,dim.width,dim.width);        for(int x = 0; x < variables.width; x++)     {         for(int y = 0; y < variables.height; y++)         {             if(variables.map[x][y] == 0)             {                  g.setcolor(new color(0x613f37));                 g.drawline(x, y, x, y);             }             else if(variables.map[x][y] == 1)             {                  g.setcolor(color.black);                 g.drawline(x, y, x, y);             }             else if(variables.map[x][y] == 2)             {                  g.setcolor(new color(0xdedede));                 g.drawline(x, y, x, y);             }          }     }          g.setcolor( new color(0.5f, 0.5f, 0.5f, 0.5f));         g.fillrect(variables.currentx, variables.currenty, variables.zoom, variables.zoom);      } 

thanks alot in advance.

also want point out made game applet before , working charm, need application.

i think data not synchronized between threads (there not enough code determine if case tough).

repaint called on swing edt , update.updategravity() called in main thread. guess update changes variable, ever synchronize data structure such swing edt sees updated value?

edit:

here should do:

variables = update.updategravity();  // runs in main thread swingutilities.invokelater(new runnable() {        @override public void run() {        yourcustomswingcomponent.update(variables);   // run on swing edt    } } 

and yourcustomswingcomponent contains paint() method have. there rule in swing state of swing component can modified (or read) swing edt.

you should read swing , multi-threading. actually, must read multi-threading use swing.