package com.chameleonvision.util; public class Utilities { private Utilities() {} public static boolean isValidIPV4(final String ip) { String PATTERN = "^((0|1\\d?\\d?|2[0-4]?\\d?|25[0-5]?|[3-9]\\d?)\\.){3}(0|1\\d?\\d?|2[0-4]?\\d?|25[0-5]?|[3-9]\\d?)$"; return ip.matches(PATTERN); } }