Skip to contentSkip to footer

Java Senior Interview Questions

Salaries
Interviews

6,023 java senior interview questions shared by candidates

1. In first round there were 3 coding question 1 Easy 2 medium level 2nd round was F2F , interview was very smooth , some time interviewer helped me a lot and explain the answer in generic way (Caching Algo, Multithreading, Collections)
avatar

Senior Java Developer

Interviewed at Snapdeal

4.2★
Jul 20, 2021

1. In first round there were 3 coding question 1 Easy 2 medium level 2nd round was F2F , interview was very smooth , some time interviewer helped me a lot and explain the answer in generic way (Caching Algo, Multithreading, Collections)

Q. What is the purpose of the hashCode() method? Ans. The hashCode() method generates a unique integer for an object, aiding in efficient data retrieval in hash-based collections. Used in hash-based collections like HashMap and HashSet for quick data access. Returns an integer value, which is the hash code of the object. Two equal objects must have the same hash code (consistent with equals()).
avatar

Senior Java Developer

Interviewed at CGI

3.7★
Sep 24, 2025

Q. What is the purpose of the hashCode() method? Ans. The hashCode() method generates a unique integer for an object, aiding in efficient data retrieval in hash-based collections. Used in hash-based collections like HashMap and HashSet for quick data access. Returns an integer value, which is the hash code of the object. Two equal objects must have the same hash code (consistent with equals()).

Viewing 4751 - 4760 interview questions

Glassdoor has 6,023 interview questions and reports from Java senior interviews. Prepare for your interview. Get hired. Love your job.