protected void configureFromProperties(InputStream is,String rootDirectory) throws IOException {
  Properties props=new Properties();
  props.load(is);
  props.put(ROOT_DIR_PATH_PROPERTY,rootDirectory);
  String oldPrefix=getPropertyPrefix();
  setProperties(null,props);
  setPropertyPrefix(oldPrefix);
}

protected void configureFromProperties ( InputStream is , String rootDirectory ) throws IOException { Properties props = new Properties ( ) ; props . load ( is ) ; props . put ( ROOT_DIR_PATH_PROPERTY , rootDirectory ) ; String oldPrefix = getPropertyPrefix ( ) ; setProperties ( null , props ) ; setPropertyPrefix ( oldPrefix ) ; }
called with an input stream for a properties file , used for reading tiles . omp files .
