How do I call the value of the function min(int a, int b) in the method min(int a, int b, int c, int d) ? I want the value 's' in the min(int a, int b, int c, int d) method for comparison.

First of all you have to return the value 's', you call it as you would in the main method. For instance: public static int min(int a, int b, int c, int d){ if (min(a, b) < min(c, d)){ return min(a, b); } }