Using recursion to sum numbers

Question

I have just been studying the concept of recursion and I thought that I would try a simple example. In the following code, I am attempting to take the numbers: 1, 2, 3, 4, 5, an

Answer 1

It could also be written like this:

public static int sum(int n){
    int total;

    if(n==1){
        total =1;

    }else{
        total = sum(n-1)+n;
    }
    return total;
}