Java, run/wait/run

I've written a program in Java that will let you select the number of 'steps' you want it to take (these represent days in the simulation).
Now I made a run option too but I can not get it to work properly.
I want it to run for X steps, after every step it needs to update the views.

This is what I tried:
for (int i = 0;i<100;i++) {
  try {
    model.simulate(1); (simulates 1 step)
    Thread.currentThread().sleep(500);
  } catch (InterruptedException e1) {
    e1.printStackTrace();
 }
}

The problem is that it will not update the views, only after 100 steps have been completed it will update the views.
I update the views using setChanged() & notifyObservers() which works when I manually do 1 step.

Any suggestions?

Use The Algorithmic Language Scheme!

Use The Forcibly Indented Language Python!

I don't speak The Bloated Language Java, but you should probably make your thread wait on a condition (eg: viewUpdated) instead of sleep(). Or whatever the equivalent is with your observer bullshit.

Otherwise it's pretty much impossible to tell what the problem is since you seem to hide all the shit in model::simulate().

>>4
nope.  >>1 obviously didn't read the threading rules for using his GUI.

while(1) {
    fork();
}

>>6
while (fork());

>>7
PROTIP: It's not the same as >>6


    start:
        fork();
        goto start;

>>7 is safe, >>6 is da bomb.

int main ()
{
fork();
main();
return 255
}

>>11
win.

>>11
umm why dont you do some tail call optimization


int
main(void)
{
f:
  fork();
  goto f;
  return 255;
}

>>13
I have a compiler that does that for me.

>>14
I'd like to see this tail-call optimization compiler that you have.

>>15
$(CC) -froll-tails

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>>15
>le pedophile sage