java中的双向链表

package cn.rwm.test;

public class NodeTest

{

public static void main(String[] args)

{

Node no1=new Node("no1");

Node no2=new Node("no2");

Node no3=new Node("no3");

no1.next=no2;

no1.previous=no3;

no2.next=no3;

no2.previous=no1;

no3.next=no1;

no3.previous=no2;

//通过no1来访问no3的str；

String nodedata=no1.next.next.str;

System.out.println(nodedata);

}

}

class Node

{

String str;

public Node(String str)

{

this.str=str;

}

Node next;

Node previous;

}