Java Host Address Get getHostAddresses()

Description

get Host Addresses

License

Apache License

Declaration

public static String[] getHostAddresses() throws Exception 

Method Source Code

//package com.java2s;
/*//from  ww w .  j  a v  a2s. co  m
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.NetworkInterface;

import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;

public class Main {
    public static String[] getHostAddresses() throws Exception {
        Enumeration<NetworkInterface> nifs = NetworkInterface.getNetworkInterfaces();

        List<String> hostIps = new ArrayList<String>();
        while (nifs.hasMoreElements()) {
            NetworkInterface nif = (NetworkInterface) nifs.nextElement();
            Enumeration<InetAddress> ips = nif.getInetAddresses();

            while (ips.hasMoreElements()) {
                InetAddress ip = (InetAddress) ips.nextElement();
                if (ip instanceof java.net.Inet4Address) {
                    hostIps.add(ip.getHostAddress());
                } else {
                    // IPv6 not tested
                }
            }
        }

        return hostIps.toArray(new String[0]);
    }
}

Related

1. getHostAddress(final String name)
2. getHostAddress(String hostname)
3. getHostAddress(String hostPort)
4. getHostAddresses()
5. getHostAddresses()
6. getHostAddressFromProperty(final String property)
7. getHostExternalAddr()
8. getHostName(String addr)
9. getHostName(String address)