As I went through third party, there were two rounds of technical interviews.

1st Interviewer: He asked all the basic core Java questions; he was polite.

2nd Interviewer: The interviewer was polite and professional. During the interview, she even tried giving me hints for solving questions.

Note: Before going for the interview, revise all core Java concepts, design patterns, and SQL queries.

1. Immutability of a class (Show an example in IDE).

2. How will you sort the salary of an Employee? (Show in IDE).

3. Once sorted, remove the 4th highest salary of an Employee? (Show in IDE).

4. What are Generics?

5. Are you aware of Design Patterns? (If yes, then explain).

6. What is Multithreading? How have you used that in your project?

7. What are Concurrent HashMaps?

8. What are HashMaps?