Can anyone explain it?? Why output is 5?

Question

// Created by Rashed

//how this is output 5

public class Program
{
public static int f(int x){
if (x==0)
return 2;
else
return 1 + f(x-1);
}
public static void main(String[] args) {
System.out.println(f(3));
}
}

Answer 1

Print the return for each instance and it will be clear.
f(0) = 2; f(1) = f(0)+1; f(2) = f(1)+1; f(3)=f(2)+1

Answer 2

Thanks bro..JME