How to implement a tree data-structure in Java?

Question

Is there any standard Java library class to represent a tree in Java?

Specifically I need to represent the following:

• The sub-tree at any node can have

Answer 1

For example :

import java.util.ArrayList;
import java.util.List;



/**
 * 
 * @author X2
 *
 * @param 
 */
public class HisTree 
{
    private Node root;

    public HisTree(T rootData) 
    {
        root = new Node();
        root.setData(rootData);
        root.setChildren(new ArrayList>());
    }

}

class Node 
{

    private T data;
    private Node parent;
    private List> children;

    public T getData() {
        return data;
    }
    public void setData(T data) {
        this.data = data;
    }
    public Node getParent() {
        return parent;
    }
    public void setParent(Node parent) {
        this.parent = parent;
    }
    public List> getChildren() {
        return children;
    }
    public void setChildren(List> children) {
        this.children = children;
    }
}