Camelcase -> Snakecase 변환 public static String convertCamelToSnake(String str){ String regex = "([a-z])([A-Z])"; String replacement = "$1_$2"; String value = ""; value = str.replaceAll(regex, replacement).toLowerCase(); return value; } Snakecase -> Camelcase 변환 public static String convertSnakeToCamel(String str) { if (str.indexOf('_') < 0 && Character.isLowerCase(str.charAt(0))) { return str; }..