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Class declaration

dhanu8288dhanu8288 USAPosts: 0Member

I was going through a code and I found a class declared like this

public class Tree { private Node root;

public Tree(T rootData) {
    root = new Node<T>();
    root.data = rootData;
    root.children = new ArrayList<Node<T>>();
}

What does mean? Why is it declared like this?

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