docs: public void NeEvl(String outputPath) throws IOException{
  
  
  		String res = "";
  		res += calcByLength()+"\n";
  		res += calcByType()+"\n";
  		res += calcByOOV()+"\n";
  		res += calcByCOOV()+"\n";
  		res += calcByOOV2()+"\n";
  		res += calcByOOVRate()+"\n";
  
  
  
  		if(outputPath != null ){
  			File outFile =new File(outputPath);
  			Writer out=new OutputStreamWriter(new FileOutputStream(outFile));
  			out.write(res);
  			out.close();
  		}
  
  	}