how to get mac and ip address using java

[rahuljin]

hello,
please help me, i need to get the mac and ip address of my pc using java program for a project.
thanks in advance.

[albinjoseph]

(06-14-2009 10:17 PM)rahuljin Wrote:  hello,
please help me, i need to get the mac and ip address of my pc using java program for a project.
thanks in advance.

To get the IP address try the following code.

Code:

java.net.InetAddress address = java.net.InetAddress.getLocalHost();
System.out.println("IP Addres  :"+address.getHostAddress());

To get the Mac address try this.

Code:

java.net.NetworkInterface networkInterface =  java.net.NetworkInterface.getByInetAddress(address);
        byte[] macAddress = networkInterface.getHardwareAddress();

        for(int index=0; index < macAddress.length; index++){
            System.out.format("%02X%s", macAddress[index], (index < macAddress.length - 1) ? "-" : "");
        }

[rahuljin]

thanks for the help.

[lynwell07]

MAC addresses are used on a local networking, for example, between two hosts to communicate basic data. This does not include Internet traffic. However, once I want to visit Experts-Exchange, my addressing must be converted to IP. In other words, the MAC address of Experts-Exchange is foreign to me. Please keep this in mind for whatever your application may be.

[heronfisher]

It is very easy process to get MAC address using java code. Just try to run following code in your PC.

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

public class Main {
public static void main(String[] args) throws Exception {
InetAddress addr = InetAddress.getLocalHost();

NetworkInterface ni = NetworkInterface.getByInetAddress(addr);
byte[] maca = ni.getHardwareAddress();

for (int k = 0; k < maca.length; k++) {
System.out.format("%02X%s", maca[k], (k < maca.length - 1) ? "-" : "");
}
}
}