Java Mac Address Get getMacAddress()

Description

get Mac Address

License

Apache License

Exception

Parameter	Description
SocketException	Error creating or accessing socket

Return

retrieve current MAC address for the system

Declaration

public static String getMacAddress() throws SocketException 

Method Source Code

//package com.java2s;
/*//from  w w  w . jav  a 2  s  .  co m
 * Copyright (c) 2017 Intel Corporation 
 *
 * 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.NetworkInterface;
import java.net.SocketException;

import java.util.Enumeration;

public class Main {
    /**
     * @return retrieve current MAC address for the system
     * @throws SocketException Error creating or accessing socket
     */
    public static String getMacAddress() throws SocketException {
        Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
        int count = 0;
        while (networkInterfaces.hasMoreElements()) {
            NetworkInterface networkInterface = networkInterfaces.nextElement();
            count++;
            byte[] bmac = networkInterface.getHardwareAddress();
            if (bmac != null) {
                String mac = macBytesToString(bmac);
                return mac;
            }
        }
        throw new SocketException("Could not determine localhost MAC address from " + count + " interfaces");
    }

    /**
     * Prettify the MAC address
     *
     * @param mac
     * @return
     */
    private static String macBytesToString(byte[] mac) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < mac.length; i++) {
            sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
        }
        return sb.toString();
    }
}

Related

1. getMacAddress()
2. getMacAddress()
3. getMacAddress()
4. getMacAddress()
5. getMACAddress()
6. getMacAddress()
7. getMacAddress()
8. getMacAddress()
9. getMacAddress()