Question

I would something like the following recursive method:

private Node getElementRec(Node currentNode, String ... names) {
    if (null == names || names.length == 0)
        return currentNode;
    else {
        Node child = currentNode.getChildWithName(names[0]);
        return getElementRec(child, namesAux.subList(1, names[1,]));
    }
}

Since variable length Java parameters (here names) are arrays, I cannot make something like names.sublist(1, names.size()) Although it would be rather inefficient, I’ve tried to convert the array to a list and then pass it to the method, but it doesn’t accept a list

So the question is: is it possible in Java to do recursion over a variable length parameter (Type ... parameter)? Something like I showed is possible?

Thanks

Answer 1

Pass the index

private Node getElementRec(Node currentNode, int i, String ... names) {
    if (null == names || names.length == i)
        return currentNode;
    else {
        Node child = currentNode.getChildWithName(names[i]);
        return getElementRec(child, i+1, names);
    }
}