docs: public void readDictionaryWithFrequency(String path, String suffix) throws IOException {		
  
  		List<File> dicts = MyFiles.getAllFiles(path, suffix);
  
  		for(File fdict: dicts){
  			BufferedReader bfr = new BufferedReader(new InputStreamReader(new FileInputStream(fdict),"utf8"));
  			String line = null;			
  			while ((line = bfr.readLine()) != null) {
  				String[] toks = line.split("(\\s|　|　|\\t)+");
  				line = toks[0];
  				if(line.length()==0||set.contains(line))
  					continue;
  
  				set.add(line);
  			}
  			bfr.close();
  		}
  	}