使用LinkedList存储信箱地址

/*

除了在类集中存储用户定义的类之外，关于下面程序的另一个重要的、值得注意的事情是它非常短.当考虑用50行代码建立一个能实现存储、检索以及处理信息地址的链表时，类集框架的能力就变得显而易见了.

*/

//A simple mailing list example.
import java.util.*;
class Address{
 private String name;
 private String street;
 private String city;
 private String state;
 private String code;

 Address(String n,String str,String c,String sta,String cod){
  name  = n;
  street  = str;
  city     = c;
  state   = sta;
  code  = cod;
 }
 public String toString(){
  return name +"\n"+ street +"\n"+
                  city +" "+ state +" "+ code;
 }
}
public class MailList{
 public static void main(String[] args)
 {
  LinkedList ll = new LinkedList();
  //Add elements to the linked list
  ll.add(new Address("ChenHuajiang","11 Oka Ave","Urbana","IL","61801"));
  ll.add(new Address("ShengJiahui","12 Oka Ave","Urbana","IL","61802"));
     ll.add(new Address("Magic","13 Oka Ave","Urbana","IL","61803"));

  Iterator itr = ll.iterator();
  while(itr.hasNext()){
   Object element = itr.next();
   System.out.println(element +"\n");
  }
  System.out.println();
 }
}