Question about calculating pi

[Wynd]

I wanted to have more presicion than just using Math.PI, but i can't figure out how to do it (partially). Someone else hepled me get started, but their code didn't work entirely, as I just keep getting the same two numbers. This si what I have:

package piApplet;

public class piApplet
{
  public static void main(String[] args)
  {
    long factorial = 1;
    int i = 1;
    double errMax = 1E-8, piOld = 1.0, piNew = 1.0, error = 1.0;

    while (error > errMax)
    {
      factorial = factorial * i;
      piNew = piOld + (1.0 / (double)factorial) * Math.pow(-1, i);
      error = Math.abs(piNew - piOld);
      i++;
      piOld = piNew;
      System.out.println(piOld);
    }

    System.out.println("pi = " +piNew);
  }
}

Can anyone help?

[sail3005]

Maybe you should do this genius:

package pi;
public class pi
{
  public static void main(String[] args)
  {
    long denom = 1;
    int i = 1;
    double errMax = 1E-5, piOld = 4.0, piNew = 4.0, error = 1.0;

    while (error > errMax)
    {
      denom = denom + 2;
      piNew = piOld + (4.0/(double)denom) * Math.pow(-1,i);
      error = Math.abs(piNew - piOld);
      i++;
      piOld = piNew;
    }

    System.out.println(piNew);
  }
}

[Wynd]

Maybe I should, who knows?

[sail3005]

That code looks fimiluar don't it?

[Wynd]

i need an icon.