Parallel programming in Java

Question

How can we do Parallel Programming in Java? Is there any special framework for that? How can we make the stuff work?

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Answer 1

As far as I know, on most operating systems the Threading mechanism of Java should be based on real kernel threads. This is good from the parallel programming prospective. Other languages like Python simply do some time multiplexing of the processor (namely, if you run a heavvy multithreaded application on a multiprocessor machine you'll see only one processor running).

You can easily find something just googling it: by example this is the first result for "java threading": http://download-llnw.oracle.com/javase/tutorial/essential/concurrency/

Basically it boils down to extend the Thread class, overload the "run" method with the code belonging to the other thread and call the "start" method on an instance of the class you extended.

Also if you need to make something thread safe, have a look to the synchronized methods.