Java String Number 체크(Check if String is a Number) isNumeric 함수 만들어서 사용. number check 함수 public static boolean isNumeric(String string) { int intValue; System.out.println(String.format("Parsing string: \"%s\"", string)); if(string == null || string.equals("")) { System.out.println("String cannot be parsed, it is null or empty."); return false; } try { intValue = Integer.parseInt(string); return ..