Spring Framework - Level I

Practice 23 Spring Framework - Level I interview questions with detailed answers. Part of the Spring track on Java Interview Hub.

• What is Spring?
• What are the advantages of the Spring framework?
• What are the modules of the Spring framework?
• Difference between Spring and Spring Boot?
• What Is a Spring Bean?
• What is IOC and DI?
• What is the role of IOC container in Spring?
• What are the types of IOC container in Spring?
• What is the use of @Configuration and @Bean annotations in Spring?
• Which Is the Best Way of Injecting Beans and Why?
• Difference between Constructor Injection and Setter Injection?
• What are the different bean scopes in Spring?
• In which scenario will you use Singleton and Prototype scope?
• What Is the Default Bean Scope in Spring Framework?
• Are Singleton Beans Thread-Safe?
• Can We Have Multiple Spring Configuration Files in One Project?
• Name Some of the Design Patterns Used in the Spring Framework?
• How Does the Scope Prototype Work?
• What are Spring Profiles and how do you use them?
• What is Spring WebFlux and how is it different from Spring MVC?
• You are starting a new Spring project. What factors would you consider when deciding between using annotations and XML for configuring your beans?
• You have a large Spring project with many interdependent beans. How would you manage the dependencies to maintain clean code and reduce coupling?
• You have a singleton bean that needs to be thread-safe. What approaches would you take to ensure its thread safety?