1. Why needed Rest API and what are the mothods and describe 2. How to do Authorization and Authentication is Spring Security 3. What is View Resolver? 4. How to return a JSON with the response of Spring? 5. What are the Hibernate Save and Persist methods differeces 6. What is Session in Hibernate? 7. try/catch in Java 8. try/catch with a resource in Java 9. Java 8 features. 10. In Rest API Stateful/ Statelss ? 11. What problem could have occur in stateless http requests?