If a function fun() is to sometimes receive an int and sometimes a double then which of the following is the correct way of defining this function?

• static void fun(object i) { ... }
• static void fun(int i) { ... }
• static void fun(double i, int j) { ... }
• static void fun(int i, double j) { ... }
• static void fun(int i, double j, ) { ... }