java语言在某个数组中查找某个字符出现的次数

package com.llh.demo;

import java.util.Scanner;

/**
 * 
 * @author llh
 *
 */
public class Test {
    /*
     * 在某个字符数组中查找某个字符出现的次数
     */
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入一个字符：");
        char a = sc.next().charAt(0);
        int count = 0;
        boolean b = true;
        char[] letter = { ‘a‘, ‘b‘, ‘c‘, ‘d‘, ‘c‘ };
        for (int i = 0; i < letter.length; i++) {
            if (a == letter[i]) {
                count++;
                b = false;
            }
        }
        if (b == false) {
            System.out.println("这个字符在字符数组中出现过" + count + "次！");
        } else {
            System.out.println("这个字符不在字符数组中！");
        }

    }

}