How to ask CompletableFuture use non-daemon threads?

Question

I have wrote following code:

 System.out.println(\"Main thread:\" + Thread.currentThread().getId());
 CompletableFuture future = CompletableFut         


        

Answer 1

The javadoc for runAsync() says:

Returns a new CompletableFuture that is asynchronously completed by a task running in the ForkJoinPool.commonPool() after it runs the given action.

There is another version of runAsync() where you can pass an ExecutorService.

Thus: when the default commonPool() doesn't do what you want - then create your own ExecutorService instead.