Using generic List as a varargs parameters

Question

I'm trying to implement a generic Tree.

Each Tree has a value, a parent and a list of its children. Children are added using following method:

public Tree<T> addChildren(Tree<T>... children) {
    for (Tree<T> child: children) {
        if (this.children.add(child)) {
            child.setParent(this);
        }
    }
    return this;
}

The problem begins when I have a List of Trees I want to add as a children:

List<Tree<T>> newChildren;

Since there is no way to create array of parametrized type in Java, the most obvious solution is to iterate over list and add children one by one:

for (Tree<T> newChild: newChildren) {
   myTree.addChildren(newChild);
}

But this is not an efficient use of varargs. Since I want to keep Tree class as simple as possible, is there any other way to implement this ?

Answer 1

This can be easily solved by creating array of raw type:

Tree<String>[] newChildrenArray = new Tree[newChildren.size()];
newChildrenArray.toArray(newChildren);
myTree.addChildren(newChildrenArray);