【Java】统计字符个数

package day4;
//字数统计
import java.util.Scanner;public class StringDemo3 {public static void main(String[] args) {Scanner sc=new Scanner(System.in);System.out.println("请输入一个字符串");String line = sc.nextLine();//        统计三种字符个数int bigCount=0;int smallCount=0;int numberCount=0;for(int i=0;i<line.length();i++){char ch= line.charAt(i);
//            判断属于哪种类型if (ch>='A'&&ch<='Z'){bigCount++;}else if (ch>='a'&&ch<='z'){smallCount++;}if (ch>='0'&&ch<='9'){numberCount++;}}System.out.println("大写个数:"+bigCount+","+"小写个数"+smallCount+','+"数字个数"+numberCount);}
}