StackOverflow2013

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19517464
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2013-10-22T12:08:50.480
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2013-10-22T12:22:29.823
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2013-10-22T12:22:29.823
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1878670
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19505682
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text
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<p>From <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Thread.html" rel="nofollow">Thread documentation</a> ,</p> <h2>A thread created by a daemon thread is initially also a daemon thread</h2> <p>Each thread may or may not also be marked as a daemon. When code running in some thread creates a new Thread object, the new thread has its priority initially set equal to the priority of the creating thread, and is a daemon thread if and only if the creating thread is a daemon. </p> <h2>When an application begins running, there is one non-daemon thread, whose job is to execute main().</h2> <p>When a <code>Java Virtual Machine starts up, there is usually a single non-daemon thread</code> (which typically <code>calls the method named main</code> of some designated class). The Java Virtual Machine continues to execute threads until either of the following occurs:</p> <ul> <li><p>The exit method of class Runtime has been called and the security manager has permitted the exit operation to take place.</p></li> <li><p>All threads that are not daemon threads have died, either by returning from the call to the run method or by throwing an exception that propagates beyond the run method.</p></li> </ul> <h2>Daemon and Non-Daemon Thread</h2> <p>A “daemon” thread is one that is supposed to provide a general service in the background as long as the program is running, but is not part of the essence of the program. Thus, when all of the non-daemon threads complete, the program is terminated. Conversely, if there are any non-daemon threads still running, the program doesn’t terminate.</p> <p>For more explaination refer <a href="http://www.linuxtopia.org/online_books/programming_books/thinking_in_java/TIJ315_005.htm" rel="nofollow">ThinkingInJava</a></p>
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1. POjava daemon thread and non-daemon thread
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1. USPrateek
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1. USPrateek
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