How to Get MAC Address in Java

In this example, let’s see how to get the localhost MAC address in Java.

Source Code

package com.beginner.examples;

import java.net.InetAddress;
import java.net.NetworkInterface;

public class GetMACexample {
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		try {
			InetAddress ip = InetAddress.getLocalHost();
			System.out.println("ip:" + ip.getHostAddress());
			NetworkInterface network = NetworkInterface.getByInetAddress(ip);

			byte[] mac = network.getHardwareAddress();

			System.out.print("Current MAC address : ");

			StringBuilder sb = new StringBuilder();
			for (int i = 0; i < mac.length; i++) {
				int tmpe = mac[i] & 0xff;

				String s = Integer.toHexString(tmpe);
				if (i == mac.length - 1) {
					sb.append(s);
				} else {
					sb.append(s + "-");
				}

			}
			System.out.println(sb.toString());

		} catch (Exception e) {

		}
	}
}

Output:

ip:192.168.0.132
Current MAC address : 40-a5-ef-45-f1-97