Here you can find the source of formatHostAddress(final InetAddress localHost)
public static String formatHostAddress(final InetAddress localHost)
//package com.java2s; /**//from w w w.j a v a 2 s . c o m * Copyright (C) 2016 Newland Group Holding Limited * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * 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.Inet6Address; import java.net.InetAddress; public class Main { public static String formatHostAddress(final InetAddress localHost) { if (localHost instanceof Inet6Address) { return "[" + localHost.getHostAddress() + "]"; } else { return localHost.getHostAddress(); } } }