java中寻找字符串中重复的字符（转）

import java.util.HashMap;
import java.util.Map;
import java.util.Set;

public class findMulString {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        printDuplicateCharacters("adsfadsfadsfhhh");
    }
    
    public static void printDuplicateCharacters(String word)
    {
        char[] charaters=word.toCharArray();
        Map<Character,Integer> charMap=new HashMap<Character,Integer>();
        for (Character ch: charaters) {
            if(charMap.containsKey(ch)){
                charMap.put(ch, charMap.get(ch)+1);
            }else{
                charMap.put(ch, 1);
            }
        }
        Set<Map.Entry<Character,Integer>> entrySet=charMap.entrySet();
        System.out.printf("List of duplicate characters in Strng '%s' %n",word);
        for(Map.Entry<Character, Integer> entry:entrySet){
            if(entry.getValue()>1){
                System.out.printf("%s:%d:%n",entry.getKey(),entry.getValue());
            }
        }
    }
}