Find PC Mac Address and IP address using java

MacAddress.java

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

public class App {

	public static void main(String[] args) {
		InetAddress ip;

		try {
			ip = InetAddress.getLocalHost();
			System.out.println("Current IP address : " + 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++) {
				sb.append(String.format("%02X%s", mac[i], (i < mac.length - 1) ? "-" : ""));
			}
			System.out.println(sb.toString());
		} catch (UnknownHostException | SocketException e) {
			e.printStackTrace();
		}
	}
}