import java.util.*;

public class IteratorTest{
   public static void main(String[] args){
      Collection c = new HashSet();//      Collection c = new HashSet();
      c.add(new Name("f1","l1"));
      c.add(new Name("f2","l2"));      
      c.add(new Name("f3","l3"));
      //System.out.println(c);
      Iterator i = c.iterator();
      if(i.hasNext()){
         Name n = (Name)i.next(); // 谁能帮我解释下这个语句的作用
         System.out.println(n.getFname() + " ");
         }
      for(Iterator l = c.iterator();l.hasNext();){
         Name n = (Name)l.next(); // 谁能帮我解释下这个语句的作用
         if(n.getLname() == "l2"){
            l.remove();
            }
         }
         System.out.println(c);   
      }
      
   static class Name{
      private String fname;
      private String lname;
      
      public Name(String fname,String lname){
         this.fname = fname;
         this.lname = lname;
         }
      
      public String getFname(){
         return fname;
         }
      
      public String getLname(){
         return lname;
         }         
         
      public String toString(){
         return fname +" " + lname;
         }   
      
      }
   
      
   }