What is the difference between a user thread and a daemon thread?

Daemons are for JVM The running of all non daemons in provides a convenient service ： As long as the present JVM There is still any non conservative in the instance

The thread protector does not end , The daemons are all working ; Only when the last non - daemonic thread ends , The guardian thread follows JVM Together

Bundle work .

User and Daemon There is little difference between the two , The only difference is the departure of the virtual machine ： If User Thread Already all

Quit running , only Daemon Thread There is , The virtual machine exits .

Because there is no guardian ,Daemon There's no work to do , There is no need to continue running the program .