1. Future vs CompletableFuture 2. What is Cyclic dependency Issue and How we can fixed it? 3. Disadvantage of Microserviecs 4. What is facade and Decorator Design Pattern. 5. What is Atomic Integer in multithreadng? 6. What are the different type of threadpool we can create in ExecutorService? 7. What are Elastic IP? 8. What are different component in SOAP.? 9. What is transactional Propagation and Projection in Hibernate and JPA? 10. What is NamedQuery in Hibernate? 11. Why FunctionalInterface introduce in Java 8? 12. If an arraylist is declear as final then can we do add and remove operatoin on list? 13. why try-with-resource introduced? 14. What is use of Collections.unmodifiable method.? 15. What is Actual and Virtual DOM in React? 16. What is Inline CSS ? 17. What is props in React?