BufferUtils

public static void checkNotNull(ByteBuffer[] buffers)

Throws IllegalArgumentException if any of the buffers in the array are null.

public static long remaining(ByteBuffer[] buffers)

Returns the total number of bytes remaining in the buffer array.

public static void consume(ByteBuffer[] sourceBuffers, int toConsume)

Marks toConsume bytes of data as consumed from the buffer array.

public static ByteBuffer getBufferLargerThan(ByteBuffer[] buffers, int minSize)

Looks for a buffer in the buffer array which EITHER is larger than minSize AND has no preceding non-empty buffers OR is the only non-empty buffer in the array.

public static ByteBuffer copyNoConsume(ByteBuffer[] buffers, ByteBuffer destination, int maxAmount)

Copies up to maxAmount bytes from a buffer array to destination . The copied data is not marked as consumed from the source buffers, on the assumption the copy will be passed to some method which will consume between 0 and maxAmount bytes which can then be reflected in the source array using the consume() method.