Recursive Generic Usage

Question

Edited:\" I received a very pertinent answer from \'erickson\', but there is a side problem (up-casting?) that was not explicitly covered in my original

Answer 1

For part 1, I would make the method signiture

static > void addNewNeighbors(Node node, T newNode)
{
  node.addNeighbor(newNode);
}

That way, node does not have to specifically be the same type as newNode.

For part 2, I would do something similar.

ConcreteNode nc = new City("");
nc.addNeighbor(new City("Bern"));