public synchronized void loadConfigData(String propFile, boolean overwriteProperty)
   {
      Configuration propData = getConfigFileData(propFile);
      if (propData != null) {
         Iterator<String> itr = propData.getKeys();
         while (itr.hasNext()) {
            String key = itr.next();
            if (overwriteProperty || !configData.containsKey(key)) {
               configData.setProperty(key, propData.getProperty(key));
            }
         }
      }
   }