Java代码模拟链表

package other;

class Link{
    private Node root;
    
    class Node{
       private String name;
       private Node Next;
       public Node(String name){
           this.name = name;
       }
       public String getName(){
           return this.name;
       }
       public void addNode(Node newNode){
           if(this.Next==null){
               this.Next = newNode;
           }else{
               this.Next.addNode(newNode);
           }
       }
       public void printNode(){
           System.out.print(this.name + "-->");
           if(this.Next!=null){
               this.Next.printNode();
           }
       }
    };
    public void add(String name){
        Node newNode = new Node(name);
        if(this.root==null){
            this.root = newNode;
        }else{
            this.root.addNode(newNode);
        }
    }
    public void print(){
        if(this.root!=null){
            this.root.printNode();
        }
    }
};

public class LinkDemo {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
          Link link = new Link();
          link.add("根节点");
          link.add("第一节点");
          link.add("第二节点");
          link.add("第三节点");
          link.add("第四节点");
          link.print();
          System.out.println("null");
          
    }

}