假期结束，散分，顺便给个基础面试题。
package com.zf.link;public class Test2 { //打印结果 为的多少 ， 心算 public static void main(String[] args) { Node n1 = new Node(1); Node n2 = new Node(2); Node n3 = new Node(3); n1.setNext(n2); n2.setNext(n3); n2 = n2.next(); System.out.println(n2.data); System.out.println(n1.next().data); } }class Node{ public int data ; private Node next ; public Node(int data){ this.data = data ; } public void setNext(Node node){ next = node; } public Node next(){ return next; } }