Here you can find the source of getLocalIPByNetworkInterface()
private static String getLocalIPByNetworkInterface() throws Exception
//package com.java2s; /**//from ww w. j a va 2 s. com * Tencent is pleased to support the open source community by making Tars available. * * Copyright (C) 2016 THL A29 Limited, a Tencent company. All rights reserved. * * Licensed under the BSD 3-Clause License (the "License"); you may not use this file except * in compliance with the License. You may obtain a copy of the License at * * https://opensource.org/licenses/BSD-3-Clause * * Unless required by applicable law or agreed to in writing, software distributed * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR * CONDITIONS OF ANY KIND, either express or implied. See the License for the * specific language governing permissions and limitations under the License. */ import java.net.Inet4Address; import java.net.InetAddress; import java.net.NetworkInterface; import java.util.Enumeration; public class Main { private static String getLocalIPByNetworkInterface() throws Exception { Enumeration<NetworkInterface> enumeration = NetworkInterface.getNetworkInterfaces(); while (enumeration.hasMoreElements()) { NetworkInterface networkInterface = enumeration.nextElement(); if (networkInterface.isUp() && !networkInterface.isVirtual() && !networkInterface.isLoopback()) { Enumeration<InetAddress> addresses = networkInterface.getInetAddresses(); while (addresses.hasMoreElements()) { InetAddress inetAddress = addresses.nextElement(); if (inetAddress instanceof Inet4Address) { return inetAddress.getHostAddress(); } } } } return null; } }