Thread: trying to pass default params to tail recursion function

In this code:

	public static void main(String[] args) {
		System.out.println(tailrecsum(5,0));
	}
 
	private static int tailrecsum(int x,int running_total, int default_total){
		if(x == 0){
			return running_total;
		}
		else {
			return tailrecsum(x-1, running_total+x);
		}
	}

I get an error "The method tailrecsum(int, int, int) in the type MainClass is not applicable for the arguments (int, int)"
on this line:

return tailrecsum(x-1, running_total+x);

I know java doesn't support default parameters, so I use overloading, but not sure why I get the error.

you define 3 parameters in tailrecsum(int, int, int) but invoke with 2 parameters in return tailrecsum(int, int)