容器API_Collection

容器API_Collection_1

 1 import java.util.*;
 2 
 3 class Name
 4 {
 5     public String name;
 6     public String sex;
 7     public Name(String name,String sex)
 8     {
 9         this.name=name;
10         this.sex=sex;
11     }
       public String toString()
       {
        return name+"  "+sex;
       }
12 }
13 
14 public class testarrlist {
15     /**
16      * @param args
17      */
18     public static void main(String[] args) {
19         // TODO Auto-generated method stub
20         Collection c=new ArrayList();
21         c.add("hello");
22         c.add(new Name("f1","l1"));
23         c.add(new Integer(100));
24         System.out.println(c.size());
25         System.out.println(c);
26         
27     }
28 
29 }