Thread interview questions: 

1. Why wait, notify and notifyAll is defined in Object Class and not on Thread class in Java
2. How to implement Thread in Java
3. What do you know about Concurrent interface in java.util package
4. Checked and unchecked exceptions
5. Difference between wait, sleep, yield in Java
6. Why wait and notify requires to be called from synchronized blocks
7. What is race condition
8. Can you write Produce Consument problem
9. Can you write Blocking Queue example
10. What is deadlock and how to avoid it
11. Difference between Thread and Runnable in Java
12. volatile keyword in Java
13. What is double check locking pattern
14. The Executor framework example