Growing ByteBuffer

Question

Has anyone has ever seen an implementation of java.nio.ByteBuffer that will grow dynamically if a putX() call overruns the capacity?

The reason I want to do it this way

Answer 1

I'd suggest using an input stream to receive data from a file (with a sperate thread if you need non-blocking) then read bytes into a ByteArrayOutstream which gives you the ability to get it as a byte array. Heres a simple example without adding too many workarounds.

    try (InputStream inputStream = Files.newInputStream(
            Paths.get("filepath"), StandardOpenOption.READ)){

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        int byteRead = 0;

        while(byteRead != -1){
            byteRead = inputStream.read();
            baos.write(byteRead);
        }
        ByteBuffer byteBuffer = ByteBuffer.allocate(baos.size())
        byteBuffer.put(baos.toByteArray());

        //. . . . use the buffer however you want

    }catch(InvalidPathException pathException){
        System.out.println("Path exception: " + pathException);
    }
    catch (IOException exception){
        System.out.println("I/O exception: " + exception); 
    }