Java NIO Pipe

Java Nio  

1	Java NIO Tutorial
2	Java NIO Overview
3	Java NIO Channel
4	Java NIO Buffer
5	Java NIO Scatter/gather
6	Java NIO Channel to channel transfers
7	Java NIO Selector
8	Java NIO FileChannel
9	Java NIO Socketchannel
10	Java NIO Serversocketchannel
11	java NIO Datagramchannel
12	Java NIO Pipe
13	Java NIO vs. IO

Java NIO Pipe
by Jakob JenkovConnect with me:
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Table of Contents

• Creating a Pipe
• Writing to a Pipe
• Reading from a Pipe

A Java NIO Pipe is a one-way data connection between and threads. A has Pipe a source channel and a sink channel. You write data to the sink channel. This data can and is read from the source channel.

Here's an illustration of the Pipe principle:

Java Nio:pipe Internals

Creating a Pipe

You open a by Pipe calling the Pipe.open() method. Here's how this looks:

Pipe pipe = Pipe.open ();

Writing to a Pipe

To write to a you Pipe need to access the sink channel. Here's how it's done:

Pipe.sinkchannel Sinkchannel = Pipe.sink ();

You write to a SinkChannel by calling it's write() method, like this:

String NewData = "New String to write to file ..." + System.currenttimemillis (); Bytebuffer buf = bytebuffer.allocate; Buf.clear (); Buf.put (Newdata.getbytes ()); Buf.flip (); while ( Buf.hasremaining ()) {    sinkchannel.write (BUF);}

Reading from a Pipe

To read from a you Pipe need to access the source channel. Here's how it's done:

Pipe.sourcechannel Sourcechannel = Pipe.source ();

To-read from the source channel, it read() method like this:

Bytebuffer buf = bytebuffer.allocate; int bytesread = Inchannel.read (BUF);

The int returned by the read() method tells how to many bytes were read into the buffer.

Next: Java NIO vs. IO

Java NIO Pipe