Tata Consultancy Services Full Stack Developer interview questions

ROUND 1 - ONLINE ASSESSMENT ROUND 2- INTERVIEW Tell me something about yourself 2. Complete project explanation and internal working 3. JDBC Connection code 4. Complete Sevlet working 5. Internal working of servlet 6. What is collection and Hierarchy 7. Stream API 8. Exception handling 9. Throw and throws difference 10. Code to throw user define exception 11. Difference between AWT and Swing 12. Servlet and JSP me difference 13. Working of JSP 14. JSP elements. 15. Abstraction, abstract class , interface 16. Difference between abstract class and interface 17. What is functional interface 18. What is polymorphism, run time , compile time polymorphism 19. Method Overloading and Overriding with real life example and implementation code 20. Java is purely Object Oriented or not 21. What is Wrapper class and it's benefits 22. Working of HashMap along with get() and put() method 23. Working of different methods in Project 24. What is finally block 25. Safest place to keep connection closing code -- finally block 26. What is Applate in java and working 27. What is DBMS 28. What is DML 29. explain any query of DML command 30. Difference between Array and Linked List 31. Implementation of Queue in java 32. What is Immutable String 33. String Constant Pool and Heap Memory 34. String Buffer and Its working