Top 25 Spring Boot Interview Questions and Answers for 2025

Here’s a comprehensive list of the Top 25 Spring Boot Interview Questions with answers and detailed explanations to help you prepare thoroughly:

1. What is Spring Boot?

Answer:
Spring Boot is an extension of the Spring Framework that simplifies the development of stand-alone, production-grade Spring-based applications.

Explanation:
It eliminates boilerplate configurations by providing defaults, auto-configuration, and embedded servers, which speeds up development.

2. What are the advantages of Spring Boot?

Answer:

• Rapid development
• Auto-configuration
• Embedded servers (no need for WAR deployment)
• Microservice-ready
• Production-ready metrics and health checks
• No need for complex XML configuration

Explanation:
Spring Boot reduces the effort of setup and configuration, which allows developers to focus on writing business logic.

3. What is the difference between Spring and Spring Boot?