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Threads
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Manish Hatwalne
Ranch Hand
Joined: Sep 22, 2001
Posts: 2573
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What are user, daemon, worker and green threads. I know user and daemon, but what about the other two?
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Valentin Crettaz
Gold Digger
Sheriff
Joined: Aug 26, 2001
Posts: 7610
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Basically, green threads are JDK-provided threads and native threads are OS-provided threads. In clear, if your JVM uses green threads, there will only be one process as far as the OS is concerned, and the JVM is responsible for simulating the different threads of your application within its own thread.
If you use native threads, there will normally be one OS process per thread in your application.
Worker threads are just threads you use to carry out some task, kind of like,...,well, a worker thread 
Read a little more about that here:
http://developer.java.sun.com/developer/qow/archive/97/
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subject: Threads
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