java - Calculate pi using Leibniz series -

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i'm new java , i'm trying make program calculates pi using leibniz series 100000 iterations. need define method , call it. when run program don't result. please tell me i'm doing wrong , me on track?

public class pi  {      public static void main(string[] args)      {           double pi = computepi(100000);       }      public static double computepi(int count)       {          double pi = 0;          count = 100000;                   for(int =0; i<count; i++)          {              pi = math.pow(-1,i)/(2*i+1);            }          return pi;      }  }

if want print console, try:

public static void main(string[] args) {      system.out.println("pi = " + calculatepi(100000));  }

i can't precision, though.


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