Here you can find the source of isIpV4PortAddress(String s)
public static boolean isIpV4PortAddress(String s)
//package com.java2s; /*/*from w ww . j a va 2s . c o m*/ * Armadillo Workflow Platform v1.0 * A simple pipeline system for phylogenetic analysis * * Copyright (C) 2009-2011 Etienne Lord, Mickael Leclercq * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import java.util.regex.Pattern; public class Main { public static boolean isIpV4PortAddress(String s) { /* Source: https://stackoverflow.com/questions/36247902/java-regex-string-check-if-ipport-string-contains-a-valid-ipv4-or-dns-address */ Pattern p = Pattern.compile("^" + "(" //+ "((?!-)[A-Za-z0-9-]{1,63}(?<!-)\\.)+[A-Za-z]{2,6}" // Domain name //+ "|" + "localhost" // localhost + "|" + "(([0-9]{1,3}\\.){3})[0-9]{1,3})" // Ip + ":" + "[0-9]{1,5}$"); // Port return p.matcher(s).matches(); } }