private static boolean isNumeric()

in src/main/java/org/apache/doris/kafka/connector/utils/ConfigCheckUtils.java [305:311]

• 7 lines of code
• 3 McCabe index (conditional complexity)

    private static boolean isNumeric(String str) {
        if (str != null && !str.isEmpty()) {
            Pattern pattern = Pattern.compile("[0-9]*");
            return pattern.matcher(str).matches();
        }
        return false;
    }