접속자 IP와 호스트명 알아보기

try
{
  InetAddress[] local = InetAddress.getAllByName( InetAddress.getLocalHost().getHostName() );
  for ( int i = 0; i < local.length; i++ )
  {
    System.out.println( "[IP COUNT : " + ( i + 1 ) + "]" );
    System.out.println( "@IP 정보 : " + local[i].getHostAddress() );
    System.out.println( "@호스트 이름 : " + local[i].getHostName() );
  }
}
catch ( UnknownHostException e )
{
	e.printStackTrace();
}