初学JAVA请问一个有关问题

package com.longlizhi;public class Test1 {    /**     * @param args     */    public static void main(String[] args) {        // TODO Auto-generated method stub    }}class Child{    int no;    Child nextChile;    public Child(int no)    {        this.no=no;    }    }class CycLink{           Child firstChild=null;    Child temp;    int len=0;    public void setLen(int len)    {        this.len=len;    }    public void createLink()    {        for(int i=1;i<=len;i++)        {           if(i==1)          {                Child ch=new Child(i);              this.firstChild=ch;              this.temp=ch;          }          else          {                if(i==len)              {                  Child ch=new Child(i);                  temp.nextChile=ch;                  temp=ch;                  temp.nextChile=this.firstChild;              }              else              {             Child ch=new Child(i);             temp.nextChile=ch;             temp=ch;              }          }        }    }    }