java concurrency: many writers, one reader

Question

I need to gather some statistics in my software and i am trying to make it fast and correct, which is not easy (for me!)

first my code so far with two classes, a StatsS

Answer 1

Have you looked into ScheduledThreadPoolExecutor? You could use that to schedule your writers, which could all write to a concurrent collection, such as the ConcurrentLinkedQueue mentioned by @Chris Dail. You can have a separately schedule job to read from the Queue as necessary, and the Java SDK should handle pretty much all your concurrency concerns, no manual locking needed.