#executorservice

How to wait for all threads to finish, using ExecutorService?

I need to execute some amount of tasks 4 at a time, something like this:

ExecutorService taskExecutor = Executors.newFixedThreadPool(4); while(...) { taskExecutor.execute(new MyTask()); } //...wait for completion somehow

How can I get notified once all of them are complete? For now I can’t think about anything better than setting…

Java Timer vs ExecutorService?

I have code where I schedule a task using java.util.timer. I was looking around and saw ExecutorService can do the same. So this question here, have you used Timer and ExecutorService to schedule tasks, what is the benefit of one using over another?

Also wanted to check if anyone had used the Timer class and ran into any issues which the ExecutorServicesolved for…