what's wrong with my code??

[role]

i calculate my FPS like this

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public void run() {             int FPS = 43;             long startTime, deltaTime;             while (Thread.currentThread() == animate) {                   // calculating current FPS                   newTime = System.currentTimeMillis();                   if (newTime > oldTime+1000) {                         System.out.println("FPS: " + ticks);                         lastTicks = ticks; ticks = 0;                         oldTime = newTime;                   }                   ticks++;                   startTime = System.currentTimeMillis();                   repaint();                   deltaTime = System.currentTimeMillis() - startTime;                   while (deltaTime < (1000/FPS)) {                         try { Thread.sleep((1000/FPS)-deltaTime);                         } catch (Exception e) { e.printStackTrace(); }                         deltaTime = System.currentTimeMillis() - startTime;                   }             }       }

but i got only 34 fps in output
then i change FPS variable to 100, it increase to 43...
what's wrong with my code???

[ap_kelly]

I calculate my FPS like this and seems to work ok.

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int  f = 0; long t = System.currentTimeMillis(); while (!quit) {   render();     // Do other stuff like handle inputs etc.   ...   // Calculate frames per second.   f++;   if (t+1000 < System.currentTimeMillis()) {     System.out.println("fps : " + f);     t = System.currentTimeMillis();     f = 0;   } }

There are some hi-res timers included in the lwjgl which may give a more precise timing, but this is a good start.

Regards,

Andy.