get host name

import java.net.*;

import java.io.*;

public class GetHostName{

 public static void main(String [] args) {

 try {

  InetAddress addr = InetAddress.getLocalHost();

  byte[] ipAddr = addr.getAddress();

  String hostname = addr.getHostName();

  System.out.println("hostname="+hostname);

  } catch (UnknownHostException e) {

  }

  }

}