java中计算一个字符串(或字符)在另一个字符串中出现的次数的方法实现

java中计算一个字符串(或字符)在另一个字符串中出现的次数的
例：

String s5 = "abc";
String s6 = "123qabcerqwrabc";
System.out.println(Exer1.myFind(s5,s6));

输出结果为2

public static int myFind(String shortStr,String longStr){
        char[] shortStrArr = shortStr.toCharArray();
        char[] longStrArr = longStr.toCharArray();

        int count = 0;
        for (int i = 0; i <= longStrArr.length - shortStrArr.length; i++) {//这里减去shortStrArr.length为了防止数组角标越界
            if (shortStrArr[0] == longStrArr[i]){
                if (shortStr.equals(longStr.substring(i,i + shortStr.length())))
                    count++;
            }
        }
        return count;
    }