1. What is JVM?
2. Difference between `==` and `equals()`?
3. What is inheritance?
4. What is method overloading?
5. What is multithreading?
6. What is polymorphism?
7. Difference between Array and ArrayList?
8. What is encapsulation?
9. Difference between HashMap and Hashtable?
10. What is constructor?
11. Difference between interface and abstract class?
12. What is exception handling?
13. Difference between String and StringBuilder?
14. What is method overriding?
15. What is Collection Framework?
I applied online. I interviewed at Hidoc Dr (Pune) in Feb 2026
Interview
The interview process was smooth, well-organised, and clearly communicated by the employer. The flow was structured, and every question asked was clear, professional, and directly relevant to the role and responsibilities.
I applied through an employee referral. The process took 3 days. I interviewed at Hidoc Dr in Nov 2025
Interview
The interview process at Hidoc Dr was smooth and well-organised. I had a total of three rounds.
The interviewers were polite and made the conversation comfortable. Overall, the process was straightforward.