Write a program to calculate the result of the formula pi in java 𝜋=4(1−1/3+1/5−1/7+1/9−1/11+1/13−⋯−1/2𝑖−1+1/2𝑖+1) with 10000 ≤ i ≤ 100000

public class PiCalculation
    {
        public static void main(String[] args)
        {
            Scanner input= new Scanner(System.in);

            System.out.println("Please enter a number:");
            int i=input.nextInt();

            double pi=0.0;

            while (i<=100000)
            {
                if (i%2==0)
                {
                    pi = pi + (1 / (2 * i + 1));
                    i++;
                }
                else
                {
                    pi = pi - (1 / (2 * i + 1));
                    i++;
                }
            }

            pi=pi*4;
            System.out.println("The result is:"+pi);
        }
    }