example13_2.java

不错的教程 适合中高级人员的使用

import java.util.*;
class Student
{String name ;int number;
  Student(String name,int number)
  {this.name=name;this.number=number;
  }
}
public class Example13_2
{public  static void main(String args[])
 { List list=new LinkedList();
   for(int k=1;k<=22222;k++)
	 {list.add(new Student("I am "+k,k));}   
    Iterator iter=list.iterator();
	long time1=System.currentTimeMillis();
   while(iter.hasNext())
   {  Student te=(Student)iter.next();
      //System.out.println(te.name+" "+te.number+"  "+te.score);
   }
   long time2=System.currentTimeMillis();
   System.out.println("遍历链表用时："+(time2-time1)+"毫秒");
   time1=System.currentTimeMillis();
   for(int i=0;i<list.size();i++)
	 {Student te=(Student)list.get(i);}
   time2=System.currentTimeMillis();
   System.out.println("遍历链表用时："+(time2-time1)+"毫秒");

 }
}