Computing the Constant pi "π" in java

Problem:

You can computer π by using the following series seen below. Write a program that displays the value for  i 10000, 20000, and 100000.

Output:

For i = 10000 pi has a value of 3.1414926535900367
For i = 20000 pi has a value of 3.1415426535898203
For i = 30000 pi has a value of 3.1415593202564684
For i = 40000 pi has a value of 3.1415676535897927
For i = 50000 pi has a value of 3.141572653589808
For i = 60000 pi has a value of 3.1415759869231388
For i = 70000 pi has a value of 3.1415783678755265
For i = 80000 pi has a value of 3.1415801535898193
For i = 90000 pi has a value of 3.141581542478711
For i = 100000 pi has a value of 3.1415826535898224

Solution:

public class Pi
{
  public static void main (String[] args)
  {
    double n =0;
    for (int i =10000;i<=100000;i+=10000)
    {
      for (double j =1;j<=i;j+=2)
      {
        n+= ( ( 1.0/((2.0*j)-1.0) ) - ( 1.0/((2.0*j)+1.0) ) );
      }
      System.out.println("For i = " + i + " pi has a" +
          "value of " + (double) 4*n);
      
      n=0;
    }
  }
}