@@ -0,0 +1,362 @@
+package club.magicfun.aquila.util;%0A%0Aimport java.util.regex.Matcher;%0Aimport java.util.regex.Pattern;%0A%0Apublic class StringUtility %7B%0A%0A%09public static String extractFirstFewDigits(String inputString) %7B%0A%09%09Pattern p = Pattern.compile(%22%5B.%5D*(%5B0-9%5D*)%5B.%5D*%22);%0A%09%09Matcher m = p.matcher(inputString);%0A%09%09if (m.find()) %7B%0A%09%09%09return m.group(1);%0A%09%09%7D else %7B%0A%09%09%09return null;%0A%09%09%7D%0A%09%7D%0A%7D%0A

add String Utility class