Java

Top Java Interview Questions & Answers (2026)

A curated set of Java interview questions asked in 2026 by product and services companies — with what a strong answer looks like.

Updated 15 Jan 2026 9 min readIntermediate Programming & Development

Behavioral

Standard behavioral prompts:

  • Walk me through your resume
  • Tell me about a hard Java problem you solved
  • How do you prioritize under a deadline?

Technical / functional

Common technical prompts:

  • Explain Core Java and give a real example
  • Explain Spring Boot and give a real example
  • Explain JPA and give a real example
  • Explain Kafka and give a real example
  • Explain Microservices and give a real example

How to prepare

The reliable prep loop:

  • List 6 STAR stories
  • Do 10+ mock interviews
  • Practice a whiteboard-friendly explanation for every core concept

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