从键盘输入一串字符串，编写一个java程序实现统计，输出有几个大写字母，几个小写字母，和几个数字？

import java.io.*;import java.util.*; public class Static{private String input; private int bLetter =0;private int sLetter =0;private int numbers =0;private int others =0;private int spaces =0; public Static(){   this.getString();