public class TreeNode {
    private String name;
    private TreeNode parent;
    private Vector<TreeNode> children = new Vector<TreeNode>();
    public TreeNode(String name) {
        this.name = name;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public TreeNode getParent() {
        return parent;
    }
    public void setParent(TreeNode parent) {
        this.parent = parent;
    }
    //添加孩子节点
    public void add(TreeNode node) {
        children.add(node);
    }
    //删除孩子节点
    public void remove(TreeNode node) {
        children.remove(node);
    }
    //取得孩子节点
    public Enumeration<TreeNode> getChildren() {
        return children.elements();
    }
}

public class Tree {
    TreeNode root = null;
    public Tree(String name) {
        root = new TreeNode(name);
    }
    public static void main(String[] args) {
        Tree tree = new Tree("A");
        TreeNode nodeB = new TreeNode("B");
        TreeNode nodeC = new TreeNode("C");
        nodeB.add(nodeC);
        tree.root.add(nodeB);
        System.out.println("build the tree finished!");
    }
}