Java IP Address Get getAllIPsAndAssignedBroadcastAddresses()

Description

Get a mapping of all assigned IP-addresses to their according broadcast addresses

License

Open Source License

Exception

Parameter	Description
SocketException	an exception

Return

a mapping of all assigned IP-addresses to their according broadcast addresses

Declaration

public static HashMap<InetAddress, InetAddress> getAllIPsAndAssignedBroadcastAddresses()
        throws SocketException 

Method Source Code

//package com.java2s;
/* The MIT License (MIT)
    //from   ww  w .j a  va 2  s  . c  o  m
Copyright (c) 2012 Jerome Wagener
    
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.*/

import java.net.InetAddress;
import java.net.InterfaceAddress;
import java.net.NetworkInterface;
import java.net.SocketException;

import java.util.Enumeration;
import java.util.HashMap;
import java.util.Iterator;

public class Main {
    /** Get a mapping of all assigned IP-addresses to their according broadcast addresses 
     * @return a mapping of all assigned IP-addresses to their according broadcast addresses 
     * @throws SocketException */
    public static HashMap<InetAddress, InetAddress> getAllIPsAndAssignedBroadcastAddresses()
            throws SocketException {
        HashMap<InetAddress, InetAddress> ipAndBroadcastAddresses = new HashMap<InetAddress, InetAddress>();
        Enumeration<?> networkInterfaces;

        networkInterfaces = NetworkInterface.getNetworkInterfaces();

        while (networkInterfaces.hasMoreElements()) {
            NetworkInterface networkInterface = (NetworkInterface) networkInterfaces.nextElement();

            if (networkInterface != null && !networkInterface.isLoopback() && networkInterface.isUp()) {
                Iterator<?> it = networkInterface.getInterfaceAddresses().iterator();
                while (it.hasNext()) {
                    InterfaceAddress interfaceAddress = (InterfaceAddress) it.next();

                    if (interfaceAddress != null && interfaceAddress.getBroadcast() != null) {
                        ipAndBroadcastAddresses.put(interfaceAddress.getAddress(), interfaceAddress.getBroadcast());
                    }
                }
            }
        }

        return ipAndBroadcastAddresses;
    }
}

Related

1. getAllHostAddresses(boolean ignoreLoopback, boolean ignoreIP6)
2. getAllHostIPs(String hostName)
3. getAllInternalHostIPs(String hostName)
4. getAllIp()
5. getAllIPAddresses()
6. getALLLocalHostIP()
7. getAllLocalIP()
8. getAllLocalIP()
9. getAllLocalIPs()