Interview Prep
for 3 Years Experience: Real Interview Questions
Interview Prep
– hashCode() helps locate a bucket. – equals() helps identify the matching key. – Collisions can happen! Can you explain collision handling?
Interview Prep
– Four pillars of OOP – Functional interfaces – Java 8 features Knowing definitions isn't enough. Understand how they work.
Interview Prep
Controller → Service → Repository → Database Can you explain the role of each layer? A practical backend development question.
Interview Prep
Count each character in "hello" Expected counts: – h = 1 – e = 1 – l = 2 – o = 1 Can you solve it with a HashMap and without one?
Bonus SQL Question
SELECT MAX(salary) FROM employee_master WHERE salary < ( SELECT MAX(salary) FROM employee_master ); Bonus: Understand why this returns the second-highest distinct salary.
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