public class PiBerechnenAnwendung {

    public static void main(String args[]){
    int k;
    k = 0;
    double pi;
    BerechnePI(pi, k);
    System.out.println(pi);


    private static void BerechnePI(double pi, int k) {
        k++;
        while(k<=3)
        pi=(1/16^k)*(((4.0/(8.0*k+1.0))-(2.0/(8.0*k+4.0))-(1.0/(8.0*k+5.0))-(1.0/(8.0*k+6.0))));
        System.out.println(pi);

    }
    }
}