Answer 10 questions and see how you score!
1. Which keyword is used to implement an interface?
2. Which keyword ensures atomicity for long/double?
3. Which keyword prevents inheritance?
4. Which class provides lock-free thread-safe counters?
5. Which instruction invokes instance methods?
6. Which reference type prevents GC most strongly?
7. Which method creates a new thread?
8. Which keyword allows method overriding?
9. Which class supports reactive streams?
10. Which GC phase reclaims short-lived objects?