Java TCP How do you read a sent stream size (header) and keep reading based upon that size

Question

Given the following pseudo code. how would I do read in the given data

Answer 1

Use DataInputStream to make your life easy.

DataInputStream in = new DataInputStream(socket.getInputStream());
short myShortStreamSize = in.readShort();
byte[] payload = new byte[myShortStreamSize];
in.readFully(payload);