UNIX select() equivalent in Java for polling multiple sockets

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captain_oldfield - 04 Oct 2007 00:57 GMT

Hi All,

I am struggling to find any information on how Java can be made to
poll multiple sockets in a single thread. In variants of UNIX this is
simply done via the select() call.

Can anyone provide any links to tutorials/information explaining how
this is done? I did come across information on the SocketChannel &
Selector classes somewhere, but unfortunately I lost the link :( I do
remember there was something particular about version 1.4 &
onwards....

Thanks all

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Arne Vajhøj - 04 Oct 2007 01:16 GMT

> I am struggling to find any information on how Java can be made to
> poll multiple sockets in a single thread. In variants of UNIX this is
[quoted text clipped - 5 lines]
> remember there was something particular about version 1.4 &
> onwards....

They keyword is nio.

There are lots of hits on Google. Including:

http://www.owlmountain.com/tutorials/NonBlockingIo.htm
http://rox-xmlrpc.sourceforge.net/niotut/index.html
http://java.sun.com/j2se/1.5.0/docs/guide/nio/example/index.html
http://www.ibm.com/developerworks/java/library/j-javaio/

Arne

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