Buffer « nio « Java I/O Q&A

1. Fast 4x4 matrix multiplication in Java with NIO float buffers    stackoverflow.com

I know there are LOT of questions like that but I can't find one specific to my situation. I have 4x4 matrices implemented as NIO float buffers (These matrices are used ...

2. Non-blocking I/O using special buffers    stackoverflow.com

How Non-blocking I/O can be performed by using special buffers that are a part of the nio package?

3. Rationale of java.nio.Buffer api?    coderanch.com

Recently I asked a similar question on http://forum.java.sun.com/thread.jspa?threadID=681917&messageID=3974007#3974007, but got no useful answer. Why does java.nio.Buffer have this (silly) flip() method. To me it seems to be an artefact of the underlying implementation. As a user of a Buffer I just want to read and write, possibly after checking how much data or space is available. Why do I have to ...

4. NIO Direct Buffers    coderanch.com

Please correct me if I'm wrong, but I understand that direct buffers may potentially lie outside of the garbage collected heap. Does that mean that creating direct buffers leaves your program susceptible to memory leaks? Is the nio developer responsbile for freeing this memory? And if so, how is this memory freed. I can't seem to find any information on it ...

5. Which is faster io datastream or NIO buffer ?    forums.oracle.com

I want to fill data with floats, arrays, etc. I'm thinking to use byte[] to store and save the information. I can use two models to do this : ByteArrayOutputStream bytestream ; DataOutputStream datastream ; or NIO.Buffer. I have read that DataOutputStream automatically grows when put data on it. By the other side, Buffer needs to set dinamically its size What ...

6. Copying part of an nio buffer to another nio buffer    forums.oracle.com

I have one java.nio.ByteBuffer which contains a stream of incoming data, which is segmented into equal sized chunks. With high frequency, I'd like to copy data out of the incoming buffer and put it into another nio buffer (which then gets fed to a thread pool of waiting worker processes). Right now, I do something like : byte[] bytes = new ...

7. nio : Buffers to Buffer    forums.oracle.com