This code only outputs 4's and I don't know why.
Is it maybe because of the static main or why? thanks

```
class Calculator {
    public static void main(String[] args) {
    int x = 3;
    boolean op = false;
    int pi = 1;
    for(int i = 0; i < 99999999; i++) {
        if(op == false) {
            pi = pi - 1 / x;
            op = true;
            x = x+2;
            System.out.println(pi*4);
        } else if(op == true) {
            pi = pi + 1 / x;
            op = false;
            x = x+2;
            System.out.println(pi*4);
        }

    }
  }
}

```