Java Interview Prep Part 1 — Core Java Questions Every Developer Must Know
🔥 DSA Interview Prep Resources — Link in Description!
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📚 Cheatsheet + 15 Problems — ₹599
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10 Core Java interview questions — with the exact answers that get you hired at product companies.
Not textbook definitions. The answers that show interviewers you truly understand Java.
Topics covered:
→ Why String is immutable — String Pool and HashMap key safety
→ equals() vs == — content vs reference comparison
→ 4 pillars of OOP with real examples
→ Abstract class vs interface — IS-A vs CAN-DO
→ final keyword trap — reference vs object
→ Pass by value — Java is always pass by value
→ Wrapper classes — why they exist and autoboxing cost
→ Access modifiers principle — start private
→ static keyword — shared across all instances
→ Mutable HashMap key — the answer that separates juniors from seniors
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Java Interview Prep Part 2 — Collections and Exception Handling — dropping Saturday April 11 at 7 PM.
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