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NIO buffer types

There are actually various different buffer classes in the java.nio package which we'll look at on the next few pages:

  • ByteBuffer is the most basic and commonly used (and actually exists in a couple of subclasses we'll see later). It is optimised for writing single bytes or groups of bytes, but can read and write any Java primitive type.
  • For each Java primitive type (short, int, double etc), there exists a corresponding buffer type: ShortBuffer, IntBuffer, DoubleBuffer etc. These are optimised for bulk operations on the given primitive type. So for example, a FloatBuffer can get/put a float array. See: reading and writing non-byte arrays for more details.
  • The CharBuffer has some additional special properties: it can be accessed as a CharSequence and allows regular expressions to be run against it.
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Written by Neil Coffey. Copyright © Javamex UK 2012. All rights reserved.