Java Interview Preparation
Spring Boot 3 Interview Questions
Spring Boot 3 features, Java 17, Jakarta migration, native images, observability, and security changes.
Spring Boot 3 Interview Focus
Spring Boot 3 features, Java 17, Jakarta migration, native images, observability, and security changes.
Interview questions
1. What are the major features of Spring Boot 3? Beginner
Spring Boot 3 is based on Spring Framework 6, requires Java 17 or newer, uses Jakarta namespaces, improves observability, and supports GraalVM native images. Migration normally requires updating dependencies, changing javax imports to jakarta, checking security configuration, testing third-party libraries, and reviewing removed APIs.
2. What is the minimum Java version required by Spring Boot 3? Beginner
Spring Boot 3 is based on Spring Framework 6, requires Java 17 or newer, uses Jakarta namespaces, improves observability, and supports GraalVM native images. Migration normally requires updating dependencies, changing javax imports to jakarta, checking security configuration, testing third-party libraries, and reviewing removed APIs.
3. What is the difference between Spring Boot 2 and Spring Boot 3? Intermediate
Spring Boot 3 is based on Spring Framework 6, requires Java 17 or newer, uses Jakarta namespaces, improves observability, and supports GraalVM native images. Migration normally requires updating dependencies, changing javax imports to jakarta, checking security configuration, testing third-party libraries, and reviewing removed APIs.
4. Why were packages changed from javax to jakarta? Intermediate
Spring Boot 3 is based on Spring Framework 6, requires Java 17 or newer, uses Jakarta namespaces, improves observability, and supports GraalVM native images. Migration normally requires updating dependencies, changing javax imports to jakarta, checking security configuration, testing third-party libraries, and reviewing removed APIs.
5. What changes are required when migrating to Spring Boot 3? Advanced
Spring Boot 3 is based on Spring Framework 6, requires Java 17 or newer, uses Jakarta namespaces, improves observability, and supports GraalVM native images. Migration normally requires updating dependencies, changing javax imports to jakarta, checking security configuration, testing third-party libraries, and reviewing removed APIs.
6. What are native images? Beginner
Spring Boot 3 is based on Spring Framework 6, requires Java 17 or newer, uses Jakarta namespaces, improves observability, and supports GraalVM native images. Migration normally requires updating dependencies, changing javax imports to jakarta, checking security configuration, testing third-party libraries, and reviewing removed APIs.
7. How does Spring Boot support GraalVM native images? Advanced
Spring Boot 3 is based on Spring Framework 6, requires Java 17 or newer, uses Jakarta namespaces, improves observability, and supports GraalVM native images. Migration normally requires updating dependencies, changing javax imports to jakarta, checking security configuration, testing third-party libraries, and reviewing removed APIs.
8. What are observability improvements in Spring Boot 3? Advanced
Spring Boot 3 is based on Spring Framework 6, requires Java 17 or newer, uses Jakarta namespaces, improves observability, and supports GraalVM native images. Migration normally requires updating dependencies, changing javax imports to jakarta, checking security configuration, testing third-party libraries, and reviewing removed APIs.
9. What security changes were introduced in Spring Boot 3? Advanced
Spring Boot 3 is based on Spring Framework 6, requires Java 17 or newer, uses Jakarta namespaces, improves observability, and supports GraalVM native images. Migration normally requires updating dependencies, changing javax imports to jakarta, checking security configuration, testing third-party libraries, and reviewing removed APIs.
10. What challenges can occur during a Spring Boot 2-to-3 migration? Advanced
Spring Boot 3 is based on Spring Framework 6, requires Java 17 or newer, uses Jakarta namespaces, improves observability, and supports GraalVM native images. Migration normally requires updating dependencies, changing javax imports to jakarta, checking security configuration, testing third-party libraries, and reviewing removed APIs.
How to Prepare for Java Technical Interviews
Use this Java technical interview question bank to revise core concepts and practise explaining your decisions clearly. The questions cover Java fundamentals, object-oriented programming, collections, exceptions, multithreading, Spring Boot, Hibernate, databases, and other topics used in real software development interviews.
Start with the fundamentals, then move to scenario-based questions and advanced topics. Filter questions by difficulty to build confidence gradually. A strong answer should define the concept, explain why it matters, and include a practical example when appropriate.
Continue your preparation with the Java tutorials, or explore all interview preparation tracks for managerial and company-focused questions.