static void checkLogDir(){
  if (System.getProperty("solr.log.dir") == null) {
    log.error("Missing Java Option solr.log.dir. Logging may be missing or incomplete.");
  }
}

static void checkLogDir ( ) { if ( System . getProperty ( "solr.log.dir" ) == null ) { log . error ( "Missing Java Option solr.log.dir. Logging may be missing or incomplete." ) ; } }
checks whether mandatory log dir is given
