Here you can find the source of getAddrString(final SocketAddress address)
public static final String getAddrString(final SocketAddress address)
//package com.java2s; /*/*w w w.j a v a 2s. co m*/ * (C) 2007-2012 Alibaba 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.InetAddress; import java.net.InetSocketAddress; import java.net.SocketAddress; public class Main { public static final String getAddrString(final SocketAddress address) { if (address == null) { return null; } if (address instanceof InetSocketAddress) { final InetSocketAddress socketAddr = (InetSocketAddress) address; final InetAddress inetAddr = socketAddr.getAddress(); return (inetAddr != null ? inetAddr.getHostAddress() : socketAddr.getHostName()) + ":" + socketAddr.getPort(); } return null; } }