java之判断输入的字符类型个数

import java.util.Scanner;

public class rui{

static public  void main(String[] args){
System.out.println("涂涂喊你输入一串字符啦！");
Scanner sc = new Scanner(System.in);
String s = sc.nextLine();
char[] c = s.toCharArray();
int number = 0,letter = 0,blank = 0,other = 0;
for(char ch : c){
if(ch>='0' && ch<='9')
number++;
else if((ch>='a' && ch<='z') || (ch>='A' && ch<='Z'))
letter++;
else if(ch==' ')
blank++;
else
other++;
}
System.out.println("涂涂说 输入的数字个数为"+number+"输入的字母个数为"+letter
+"输入的空格个数为"+blank+"输入其他字符个数为"+other);
}
}