private String toPathname(final String... pathElements){
  if (pathElements != null) {
    final StringBuilder buffer=new StringBuilder();
    for (    String pathElement : pathElements) {
      buffer.append(File.separator);
      buffer.append(pathElement);
    }
    return buffer.toString();
  }
  return null;
}

private String toPathname ( final String ... pathElements ) { if ( pathElements != null ) { final StringBuilder buffer = new StringBuilder ( ) ; for ( String pathElement : pathElements ) { buffer . append ( File . separator ) ; buffer . append ( pathElement ) ; } return buffer . toString ( ) ; } return null ; }
gets a fully - qualified path anchored at root . < p / >
