Previously for obtaining a MAC address we need to use a native code as a solution. In JDK 1.6 a new method is added in the java.net.NetworkInterface class, this method is getHardwareAddress().
package org.kodejava.example.network;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.UnknownHostException;
public class MacAddress {
public static void main(String[] args) {
try {
// InetAddress address = InetAddress.getLocalHost();
InetAddress address = InetAddress.getByName("192.168.42.26");
/*
* Get NetworkInterface for the current host and then read
* the hardware address.
*/
NetworkInterface ni = NetworkInterface.getByInetAddress(address);
if (ni != null) {
byte[] mac = ni.getHardwareAddress();
if (mac != null) {
/*
* Extract each array of mac address and convert it
* to hexadecimal with the following format
* 08-00-27-DC-4A-9E.
*/
for (int i = 0; i < mac.length; i++) {
System.out.format("%02X%s",
mac[i], (i < mac.length - 1) ? "-" : "");
}
} else {
System.out.println("Address doesn't exist or is not " +
"accessible.");
}
} else {
System.out.println("Network Interface for the specified " +
"address is not found.");
}
} catch (UnknownHostException | SocketException e) {
e.printStackTrace();
}
}
}
Wayan Saryada
Founder at Kode Java Org
I am a programmer, a runner, a recreational diver, currently live in the island of Bali, Indonesia. Mostly programming in Java, Spring Framework, Hibernate / JPA. If these posts help, you can support me, buy me a cup of coffee or tea. Thank you 🥳
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