Java泛型集

package com.codingdict;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;

public class GenericsTester {
   public static void main(String[] args) {

      Set<Integer> integerSet = new HashSet<Integer>();

      integerSet.add(Integer.valueOf(10));
      integerSet.add(Integer.valueOf(11));

      Set<String> stringSet = new HashSet<String>();

      stringSet.add("Hello World");
      stringSet.add("Hi World");


      for(Integer data: integerSet){
         System.out.printf("Integer Value :%d\n", data);
      }

      Iterator<String> stringIterator = stringSet.iterator();

      while(stringIterator.hasNext()){
         System.out.printf("String Value :%s\n", stringIterator.next());
      }
   }  
}