检查字符串是否只有一个与java中的回文不匹配的字符

public class PalindromeChecker {
    public static boolean hasOnlyOneNonMatchingChar(String str) {
        int left = 0;
        int right = str.length() - 1;
        int nonMatchingCharCount = 0;

        while (left < right) {
            if (str.charAt(left) != str.charAt(right)) {
                nonMatchingCharCount++;
                if (nonMatchingCharCount > 1) {
                    return false;
                }
            }
            left++;
            right--;
        }

        return true;
    }

    public static void main(String[] args) {
        String str = "level";
        boolean result = hasOnlyOneNonMatchingChar(str);
        System.out.println(result);  // 输出：true
    }
}