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package tree;

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

public class Node<T>{
    private T data = null;
    private List<Node> children = new ArrayList<>();
    private Node parent = null;

    public Node(T data) {
        this.data = data;
    }

    public void addChild(Node node) {
        children.add(node);
    }
    
      
    

    public List<Node> getChildren() {
        return children;
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }

    
    
}

package tree;



class Tree {