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Java NIO Tutorial, Java NIO vs. IO, Buffer Basics., direct buffer vs Indirect buffer

 
Greenhorn
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In Java programming, I/O has until recently been carried out using a stream metaphor. All I/O is viewed as the movement of single bytes, one at a time, through an object called a Stream. Stream I/O is used for contacting the outside world. It is also used internally, for turning objects into bytes and then back into objects.
NIO has the same role and purpose as original I/O, but it uses a different metaphor -- block I/O. As you will learn in this tutorial, block I/O can be a lot more efficient than stream I/O.
 
Rancher
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> In Java programming, I/O has until recently been carried out using a stream metaphor.

You posted this today.

However NIO has been around since version J2SE 1.4 (February 6, 2002)
NIO was extended with Java SE 7 (July 28, 2011).

Java version history
 
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