The HackerRank task will be given by them and needs to be completed within 24 hours. It consists of a 90-minute assessment with 2 coding questions and more than 10 other questions related to Threading, JVM, GC, etc.

The next round is the Technical Interview, where an interviewer will ask questions about your skills. This round tests your Coding, Problem Solving, and Code Optimizing abilities. Questions related to coding will be asked simultaneously. The interview took nearly 1 hour.

1. Singleton Class: Create the Singleton Class in 2 ways (direct and thread-safe).

2. Hash Map implementation.

3. Thread-related questions: Sync, Life Cycles, States.

4. Ways of creating a thread: Which do you prefer and why?

5. Wait vs. Sleep.

6. Serialization.

7. Comparable vs. Comparator.

8. REST API, Service, Annotation, Repository, JPA, JUnit.