Stuck with recursion within a loop

Question

I am using recursion inside a loop. I want to stop the loop as soon as the method is called recursively and resume it again when the call returns. I am not able to do so. Do I need to lock the method?

Here is my code:

import java.lang.Thread;

public class Max2Friends extends Thread {
    String[] f = {"NYNNN", "YNYNN", "NYNYN", "NNYNY", "NNNYN"};
    int[] twof = {0, 0, 0, 0, 0};

    public static void main(String[] args) {
        Max2Friends obj=new Max2Friends();   
        obj.Calculate(999,999);
    } 

    public void Calculate(int p, int t) {
        System.out.println("p=" + p);
        System.out.println("t=" + t);

        for (int i = 0; i != p && i < 5; i++) {
            System.out.println("i=" + i);
            System.out.println("p value inside=" + p);
            System.out.println("t value inside=" + t);

            if (i == t)
                i=i+1;

            for (int j = 0; j < 5; j++) {
                if (f[i].charAt(j) == 'Y' && p == 999) {
                    Calculate(i,j);
                } else if (f[i].charAt(j) == 'Y' && j == t) {
                    twof[p]++;
                    break;
                }
            }
        }
    }
}