HashSet用于从字符串数组中删除重复的值。

import java.util.List;

import java.util.Arrays;

import java.util.HashSet;/**来自 n o w  j a v a  . c o m**/

import java.util.Set;

import java.util.Collection;


public class Main 

{

   public static void main(String[] args)

   {

      // create and display a List<String>

      String[] colors = {"red", "white", "blue", "green", "gray", 

         "orange", "tan", "white", "cyan", "peach", "gray", "orange"};

      List<String> list = Arrays.asList(colors);

      System.out.printf("List: %s%n", list);
      /*
      来 自*
       nowjava - 时  代  Java
      */


      // eliminate duplicates then print the unique values

      printNonDuplicates(list);

   }  


   // create a Set from a Collection to eliminate duplicates

   private static void printNonDuplicates(Collection<String> values)

   {

      // create a HashSet 

      Set<String> set =