各类字符串，找出大写，小写英文个数

[java]代码库

import java.util.*; 
public class Main{ 
    public static void main(String[] args) { 
         Scanner scan = new Scanner(System.in);
         String s = scan.nextLine();
         int Num = 0, num = 0, i;
         int n = s.length();
         for(i = 0; i < n; i++) {
        	 if(s.charAt(i)>='A' && s.charAt(i)<='Z')
        		 Num++;
        	 else if(s.charAt(i)>='a' && s.charAt(i)<='z')
        		 num++;
         }
         System.out.println(Num);
         System.out.println(num);
         System.out.println(n-Num-num);
        	
         scan.close();  
    } 
}