ByteBuffer is one of the sub class of abstract class Buffer in the "nio"
Buffer class has subclasses for each non-boolean primitive type:
If we compare these subclasses of Buffer, we will find them very similar.
and relative get() is used to read and put() methods is used to write values
of primitive types other than byte.
ByteBuffer class provides two more capabilities that makes it more general than
other subclasses of Buffer.
These are methods absolute and relative get() and put() methods
and methods for creating view buffers. This class is also important for the use
of channels in java.
-- There are also methods needed to create the view buffers.
This allows the byte buffer to be viewed as a general buffer that contains
primitive type values other than Bytes.