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It seems that daemon threads are always better – because they will be stopped by the VM after application main thread exits. Are there any other reasons to use non-daemon threads besides the cases when it is not possible to interrupt some operation ?
Thanks.
The VM may stop daemon threads in the middle of their executions, and persistent data could be corrupted because of that.
If you need more control of when a thread is safe to die, do not make it a daemon.