测试一个字符串中各字符出现的次数

package test;

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

/** * Created by suzunshou on 2016/4/8. */
public class Test11 {
    public static void main(String[] args) {
        String s = "0005"; //待测试的字符串
        Map<Character, Integer> result = getCharMaps(s);
        System.out.println(result);//打印出字符串中各字符出现的次数！

    }

    public static Map<Character, Integer> getCharMaps(String s) {
        Map<Character, Integer> map = new HashMap<Character, Integer>();
        for (int i = 0; i < s.length(); i++) {
            Character c = s.charAt(i);
            Integer count = map.get(c);
            map.put(c, count == null ? 1 : count + 1);
        }
        return map;

    }
}