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Ranch Hand
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Hi,

why threads are called as execution contexts or lightweight processes and also how they manage to keep moving in and out of running state without ever loosing the correctness of execution.
 
Marshal
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Somebody else asked the same question a few days ago, here.
As for how to maintain correctness, I am afraid I haven't got a week to explain!
 
Author and all-around good cowpoke
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If you want the real details, see the java virtual machine specifications.

Bill
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