Answer by yoAlex5 for What is a daemon thread in Java?

Java daemon thread

[Daemon process]

Java uses user thread and daemon tread concepts.

JVM flow

1. If there are no `user treads` JVM starts terminating the program2. JVM terminates all `daemon threads` automatically without waiting when they are done3. JVM is shutdown

As you see daemon tread is a service thread for user treads.

• daemon tread is low priority thread.
• Thread inherits it's properties from parent thread. To set it externally you can use setDaemon() method before starting it or check it via isDaemon()