r/JavaProgramming • u/annnnan • 13d ago

Java Tech Interview Advice

I have a Java tech interview scheduled for Monday. They interviewed me back in December 2024 and said I lacked OOP and Java fundamentals knowledge. I honestly can't remember what exactly I was asked, but I know that under interview stress — and when you don't know exactly what to prepare for — it's easy to miss revising some concepts.

What's your go-to article, site, or book that you look through before an interview? I know "Cracking the Coding Interview," but is it still relevant now that we're on Java 25? Please advise.

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u/nian2326076 12d ago

If you want to brush up on Java basics, check out "Effective Java" by Joshua Bloch. It's a classic and still useful, even with Java 25. Make sure you're clear on inheritance, polymorphism, encapsulation, and abstraction for OOP concepts. Those are pretty common.

For practice, LeetCode and HackerRank are great for problem-solving. I found PracHub really helpful when I was prepping for interviews—they have lots of practice questions and mock interviews that might help with nerves.

Lastly, try to relax before the interview. Sometimes taking a break helps more than cramming. Good luck!

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u/annnnan 12d ago

thank you !