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 CalcPi{
    public static void main(String[] args){
        System.out.println("Calculating pi with BigDecimal");
        BigDecimal pi = new BigDecimal(0);
        boolean isMinus = true;
        for(int i=10000; i<100000; i++){
            BigDecimal denominator = new BigDecimal(2*i+1);
            BigDecimal term;
            if(isMinus){
                term = new BigDecimal(-1).divide(denominator, new MathContext(10000));
            }else{
                term = new BigDecimal(1).divide(denominator, new MathContext(10000));
            }
            pi = pi.add(term);
            isMinus = !isMinus;
        }
        pi = pi.multiply(new BigDecimal(4));
        System.out.println("pi = "+pi);
    }
}