maillist.java~1~

来自「java2参考大全上的例子的源码和自己的理解.」· JAVA~1~ 代码 · 共 55 行

package 将用户定义的类存储于collection中;

/**
 为了简单，前面的例子在类集中存储内置的对象，如String或Integer。当然，类集并没
 有被限制为只能存储内置的对象。完全相反的是，类集的能力是它能存储任何类型的对象，
 包括你所创建的类的对象。例如，考虑下面的例子，在这个例子中使用LinkedList存储信箱
 地址。
 */

// 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 s, String c,
          String st, String cd) {
    name = n;
    street = s;
    city = c;
    state = st;
    code = cd;
  }

  public String toString() {
    return name + "\n" + street + "\n" +
        city + " " + state + " " + code;
  }
}

class MailList {
  public static void main(String args[]) {
    LinkedList ml = new LinkedList();

    // add elements to the linked list
    ml.add(new Address("J.W. West", "11 Oak Ave",
                       "Urbana", "IL", "61801"));
    ml.add(new Address("Ralph Baker", "1142 Maple Lane",
                       "Mahomet", "IL", "61853"));
    ml.add(new Address("Tom Carlton", "867 Elm St",
                       "Champaign", "IL", "61820"));

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