Learning RxJava

Starting and shutting down Schedulers

Each default Scheduler is lazily instantiated when you first invoke its usage. You can dispose the computation(), io(), newThread(), single(), and trampoline() Schedulers at any time by calling their shutdown() method or all of them by calling Schedulers.shutdown(). This will stop all their threads and forbid new tasks from coming in and will throw an error if you try otherwise. You can also call their start() method, or Schedulersers.start(), to reinitialize the Schedulers so they can accept tasks again.

In desktop and mobile app environments, you should not run into many cases where you have to start and stop the Schedulers. On the server side, however, J2EE-based applications (for example, Servlets) ...