Core Java for the Junior Developer Interview

Master fundamental concepts and practice answering common questions to confidently navigate your first technical interviews.

4.4 (191) ⏱ 1h 28m 📚 12 lessons 🎧 Audio version

About this course

Facing your first Java technical interview can be intimidating. This course is designed to demystify the process and build your confidence by focusing on the essential topics you'll be tested on. You will gain a solid understanding of the core Java concepts frequently asked in junior developer roles. By working through clear explanations and practical exercises, you'll learn how to articulate your knowledge effectively and solve common coding challenges. What you'll learn: - Understand core OOP principles like inheritance, polymorphism, and encapsulation. - Explain fundamental Java concepts, including the String Pool, immutability, and proper exception handling. - Work with essential data structures from the Java Collections Framework, such as Lists, Sets, and Maps. - Solve common array-based logic puzzles and sorting challenges. - Apply basic unit testing principles to verify your code's correctness. - Practice debugging and analyzing code snippets to identify common errors. The course begins with a review of Java fundamentals and object-oriented programming before moving on to data structures, algorithms, and practical problem-solving exercises. This course is ideal for aspiring junior Java developers, recent graduates, or anyone preparing for entry-level programming interviews. No prior interview experience is required. Start reading today and prepare to ace your next interview.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 🎧 Audio version included
    Learn on the go — no screen needed
  • ♾️ Lifetime access
    Come back anytime, no expiry
  • 📱 Phone or computer
    Works anywhere, any device
  • 💸 30-day refund
    No questions asked
  • Short & focused
    1h 28m of practical content

Reviews (2)

Adekunle Williams NG Verified learner
★ 2 · 2025-08-18T12:55:56+00:00

Hmm, I'm not sure this is for absolute beginners. It assumes a bit of prior knowledge that wasn't explicitly taught. Some examples were confusing.

Fitriani Rahman ID
★ 3 · 2025-06-01T11:59:56+00:00

Fantastic resource. I learned so much, and the examples used were super helpful in understanding the concepts. Highly recommend.

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe, or with cryptocurrency. We do not store card details — Stripe handles them securely.

Can I get a refund? +

Yes — full refund within 30 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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