Java tutorial
/* * Copyright 2011 - 2013 Aaron Mahan * Copyright 2013 - 2016 Forerunner Games, LLC * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ package com.forerunnergames.tools.net; import com.forerunnergames.tools.common.Arguments; import com.forerunnergames.tools.common.Classes; import com.google.common.net.HostSpecifier; import com.google.common.net.InetAddresses; import com.google.common.net.InternetDomainName; import javax.annotation.Nullable; public final class NetworkTools { public static boolean isLocalhostAddress(final String address) { Arguments.checkIsNotNull(address, "address"); return address.equals(NetworkConstants.LOCALHOST_ADDRESS) || address.equalsIgnoreCase(NetworkConstants.LOCALHOST_NAME); } public static boolean isValidIpAddress(@Nullable final String address) { return address != null && InetAddresses.isInetAddress(address); } public static boolean isValidAddress(@Nullable final String address) { return address != null && HostSpecifier.isValid(address); } public static boolean isValidDomainName(@Nullable final String address) { return address != null && InternetDomainName.isValid(address); } private NetworkTools() { Classes.instantiationNotAllowed(); } }