How to easily convert a BufferedReader to a String?

Question

@POST @Path("/getphotos") @Produces(MediaType.TEXT_HTML) public String getPhotos() throws IOException{     // DataInputStream rd = new DataInputStream(request.getInputStream());     BufferedReader rd = new BufferedReader(         new InputStreamReader(request.getInputStream(), "UTF-8")     );     String line = null;     String message = new String();     final StringBuffer buffer = new StringBuffer(2048);     while ((line = rd.readLine()) != null) {         // buffer.append(line);         message += line;     }     System.out.println(message);     JsonObject json = new JsonObject(message);     return message; } 

The code above is for my servlet. Its purpose is to get a stream, make a a Json file from it, and then send the Json to the client back. But in order to make Json, I have to read BufferedReader object rd using a "while" loop. However I'd like to convert rd to string in as few lines of code as possible. How do I do that?

Answer 1

From Java 8:

rd.lines().collect(Collectors.joining());