Java解 | #HJ2计算某字母出现次数#

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        while(in.hasNext()){
            String str = in.nextLine().toLowerCase();
            Character c = in.nextLine().toLowerCase().charAt(0);
            Character.toLowerCase(c);
            int count = 0;
            for(int i=0;i<str.length();i++){
                if(c == str.charAt(i)){
                    count++;
                }
            }
            System.out.println(count);
        }
    }
}