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

/**
 *
 * @author Neutron0690
*/
public final class NetworkInfo {
public final static String ipAddress(){
 try {
     InetAddress addr = InetAddress.getLocalHost();

     // Get IP Address
     byte[] ipAddr = addr.getAddress();

     // Convert to dot representation
     String ipAddrStr = "";
     for (int i=0; iif (i > 0) {
             ipAddrStr += ".";
         }
         ipAddrStr += ipAddr[i]&0xFF;
     }

     return ipAddrStr;
 } catch (UnknownHostException e) {
     return "";
 }
}

public final static String hostName(){
 try {
     InetAddress addr = InetAddress.getLocalHost();

     // Get hostname
     String hostname = addr.getHostName();

     return hostname;
 } catch (UnknownHostException e) {
     return "";
 }
}

public final static String macAddress(){
 try {
     InetAddress address = InetAddress.getLocalHost();

     /*
             * Get NetworkInterface for the current host and then read the
             * hardware address.
             */
     NetworkInterface ni = NetworkInterface.getByInetAddress(address);
     byte[] mac = ni.getHardwareAddress();

     /*
             * Extract each array of mac address and convert it to hexa with the
             * following format 08-00-27-DC-4A-9E.
             */
     String tmp = "";
     for (int i = 0; i < tmp =" tmp" class="character">"%02X%s", mac[i], (i < class="character">"-" : "");
     }

     return tmp;
 } catch (UnknownHostException e) {
     e.printStackTrace();
     return "";
 } catch (SocketException e) {
     e.printStackTrace();
     return "";
 }
}
}