ackage com.test; import java.util.*;
public class Test2 {
public static void main(String args[]){
String s = "abcdad"; //待测试的字符串
Map 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 getCharMaps(String s) {
Map map = new HashMap();
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;
}
}