Top Questions

1. ExecutorCompletionService? Why do need one if we have invokeAll?
   47 votes

   4 answers
2. HttpURLConnection implementation
   17 votes

   6 answers
3. Is a notify signalled on thread finish? Why does this code sample work?
   15 votes

   6 answers
4. Polymorphism on member variables. I know it is not possible, I don't understand this specific case
   11 votes

   4 answers
5. Can't I put a null in a SortedSet?
   9 votes

   4 answers