Is it possible to implement a class with a parameter of type <Generic extends X>?

Question

I'm trying to create a new class that looks like this:

public class WikiGraph<V extends Node> implements DirectedGraph<V extends Node> 

It seems that this is illegal, and when I extend the graph and try to use a parameter that is a subclass of Node, this is a problem. I'm trying to create a subclass that looks like this:

 public class WikiGraphWeighted<WeightedNode> implements DirectedGraph<WeightedNode> 

Are there any workarounds for this. Is what I'm trying to do even possible?

Answer 1

The constraint on V remains in force when it's used elsewhere in scope.

public class WikiGraph< V extends Node > implements DirectedGraph< V > {

}