1. Array and arraylist diff 2. difference between linkedlist and hashmap. 3. set and map. 4. interface and abstract class. 5. what is thread, write threading smaple prog. 6. diff betn == and === 7. Types of DI in Spring. 8. how to configure hibernate. 9. how will you set up a Spring project using Maven. 10. u know oracle, type of joins. 11. how hashmap works, tell me what happens internally in memory. 12. difference between hashmap and hashtable. 13. explain Servlet and jsp lifecycle in detail. 14. can u create an object of abstract class. 15. what is JVM, JRE and JDK. 16. Which design patterns did u use in ur previous projects, explain them. 17. what is Singleton ans Factory design pattern.
