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

Socket has a getInputStream() method. You would use the returned InputStream and read myShortStreamSize of bytes from it into a byte[], convert that into a int/long representing your payload size and then read into another, larger, new byte[payloadSize], the payload itself.