{"id":4019,"date":"2025-07-30T13:02:00","date_gmt":"2025-07-30T07:32:00","guid":{"rendered":"https:\/\/www.skilr.com\/blog\/?p=4019"},"modified":"2025-07-30T14:40:33","modified_gmt":"2025-07-30T09:10:33","slug":"top-50-spring-boot-interview-questions-and-answers","status":"publish","type":"post","link":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/","title":{"rendered":"Top 50 Spring Boot Interview Questions and Answers"},"content":{"rendered":"\n<p>Spring Boot has become the go-to framework for building production-ready Java applications quickly and efficiently and Spring Boot interviews have become more challenging. Built on top of the Spring Framework, it eliminates boilerplate code, simplifies configuration, and enables developers to create stand-alone, microservice-based applications with minimal effort.<\/p>\n\n\n\n<p>As enterprise applications increasingly adopt microservices and cloud-native architectures, Spring Boot has grown in popularity among developers and hiring managers alike. Whether you are a fresher learning enterprise application development or an experienced Java developer preparing for backend interviews, mastering Spring Boot is essential.<\/p>\n\n\n\n<p>In this blog, we have compiled the top 50 Spring Boot interview questions and answers\u2014carefully selected to cover both foundational and advanced topics. These questions will help you understand real-world usage, internal mechanisms, and best practices needed to crack interviews with confidence.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Spring Boot Interview Questions With Answers | Real-Time Spring Boot Interview Questions and Answers\" width=\"1170\" height=\"658\" src=\"https:\/\/www.youtube.com\/embed\/1QNX1k6gpmc?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Target Audience<\/strong><\/h3>\n\n\n\n<p>This blog is designed to help a wide range of learners and professionals who want to strengthen their understanding of Spring Boot interview and succeed in technical interviews. It is especially useful for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Freshers<\/strong> preparing for backend developer roles and campus placements involving Spring Boot and Java.<\/li>\n\n\n\n<li><strong>Experienced Java developers<\/strong> looking to transition into Spring Boot-based projects or microservices architecture.<\/li>\n\n\n\n<li><strong>Full-stack developers<\/strong> seeking to solidify their backend knowledge using Spring Boot.<\/li>\n\n\n\n<li><strong>Tech interview candidates<\/strong> aiming to cover all important topics from auto-configuration to security and database integration.<\/li>\n\n\n\n<li><strong>Self-learners and bootcamp graduates<\/strong> who want to bridge the gap between theoretical knowledge and interview expectations.<\/li>\n<\/ul>\n\n\n\n<p>If you are planning to appear in a Java or backend-focused spring boot interview, this guide will help you revise and practice with clarity and confidence. Let us begin with first set of questions and answers now. <\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-elements-d24ac2b94da9ae28b6b32073037f7fa5\"><strong>Spring Boot Basics (Questions 1\u201310)<\/strong><\/h3>\n\n\n\n<p>This section covers the fundamental concepts of Spring Boot. These questions are often asked to test your understanding of what Spring Boot is, how it works, and why it is widely used in Java application development.<\/p>\n\n\n\n<p><strong>Q1. What is Spring Boot?<\/strong><br><strong>Answer:<\/strong> Spring Boot is a framework built on top of the Spring Framework that simplifies the development of stand-alone, production-ready Spring applications. It removes boilerplate code and reduces configuration effort by using auto-configuration, embedded servers, and starter dependencies.<\/p>\n\n\n\n<p><strong>Q2. What are the main features of Spring Boot?<\/strong><br><strong>Answer:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Auto-configuration<\/strong> of Spring beans based on project setup<\/li>\n\n\n\n<li><strong>Starter dependencies<\/strong> to simplify Maven\/Gradle configuration<\/li>\n\n\n\n<li><strong>Embedded servers<\/strong> like Tomcat and Jetty<\/li>\n\n\n\n<li><strong>Production-ready features<\/strong> like health checks, metrics via Spring Boot Actuator<\/li>\n\n\n\n<li><strong>Minimal configuration<\/strong> using annotations and defaults<\/li>\n<\/ul>\n\n\n\n<p><strong>Q3. How is Spring Boot different from Spring Framework?<\/strong><br><strong>Answer:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Spring requires manual configuration and setup; Spring Boot provides automatic configuration.<\/li>\n\n\n\n<li>Spring Boot includes embedded servers; traditional Spring applications require external servers.<\/li>\n\n\n\n<li>Spring Boot has opinionated defaults, while Spring gives you full control with more complexity.<\/li>\n<\/ul>\n\n\n\n<p><strong>Q4. What is a Spring Boot starter?<\/strong><br><strong>Answer:<\/strong> A starter is a set of convenient dependency descriptors. It bundles required libraries for a specific feature.<br>Examples:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>spring-boot-starter-web<\/code> for building web apps<\/li>\n\n\n\n<li><code>spring-boot-starter-data-jpa<\/code> for database access using JPA<\/li>\n<\/ul>\n\n\n\n<p><strong>Q5. What is the use of the <code>@SpringBootApplication<\/code> annotation?<\/strong><br><strong>Answer:<\/strong><br><code>@SpringBootApplication<\/code> is a meta-annotation that combines:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>@Configuration<\/code>: Marks the class as a source of bean definitions<\/li>\n\n\n\n<li><code>@EnableAutoConfiguration<\/code>: Enables Spring Boot\u2019s auto-configuration<\/li>\n\n\n\n<li><code>@ComponentScan<\/code>: Scans for components in the package<\/li>\n<\/ul>\n\n\n\n<p><strong>Q6. How do you run a Spring Boot application?<\/strong><br><strong>Answer:<\/strong> You can run it using the <code>main<\/code> method in the application class:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>public static void main(String[] args) {<br>  SpringApplication.run(MyApplication.class, args);<br>}<\/code><\/pre>\n\n\n\n<p>Or by executing <code>mvn spring-boot:run<\/code> or running the packaged JAR file.<\/p>\n\n\n\n<p><strong>Q7. What is auto-configuration in Spring Boot?<\/strong><br><strong>Answer:<\/strong> Auto-configuration automatically configures Spring beans based on the classpath, defined properties, and existing configurations. It reduces the need for manual <code>@Bean<\/code> declarations.<\/p>\n\n\n\n<p><strong>Q8. What is the default port number used by Spring Boot?<\/strong><br><strong>Answer:<\/strong> By default, Spring Boot uses port <strong>8080<\/strong> for web applications.<\/p>\n\n\n\n<p>You can change it using:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>server.port=9090<br><\/code><\/pre>\n\n\n\n<p><strong>Q9. What is the purpose of <code>application.properties<\/code> or <code>application.yml<\/code>?<\/strong><br><strong>Answer:<\/strong> These files are used to configure application settings such as database URLs, port numbers, logging levels, etc.<\/p>\n\n\n\n<p>Example (<code>application.properties<\/code>):<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>spring.datasource.url=jdbc:mysql:\/\/localhost:3306\/mydb<br>server.port=8081<br><\/code><\/pre>\n\n\n\n<p><strong>Q10. How do you enable debugging in a Spring Boot application?<\/strong><br><strong>Answer:<\/strong> You can enable debug mode in <code>application.properties<\/code>:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>debug=true<\/code><\/pre>\n\n\n\n<p>Or by passing <code>--debug<\/code> as a command-line argument.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-elements-afb720e3d8d285cde3e5383359d46217\"><strong>Auto-Configuration, Annotations &amp; Properties (Questions 11\u201320)<\/strong><\/h3>\n\n\n\n<p>This section dives deeper into how Spring Boot minimizes boilerplate through auto-configuration, powerful annotations, and flexible property management.<\/p>\n\n\n\n<p><strong>Q11. What is <code>@EnableAutoConfiguration<\/code> in Spring Boot?<\/strong><br><strong>Answer:<\/strong> <code>@EnableAutoConfiguration<\/code> tells Spring Boot to start adding beans based on classpath settings, other beans, and various property settings. It is typically included within <code>@SpringBootApplication<\/code>.<\/p>\n\n\n\n<p><strong>Q12. What is the purpose of <code>@ComponentScan<\/code>?<\/strong><br><strong>Answer:<\/strong> <code>@ComponentScan<\/code> tells Spring where to look for annotated components (<code>@Component<\/code>, <code>@Service<\/code>, <code>@Repository<\/code>, <code>@Controller<\/code>).<br>It ensures that all required beans are picked up during runtime.<\/p>\n\n\n\n<p><strong>Q13. What is the order of precedence for Spring Boot properties?<\/strong><br><strong>Answer:<\/strong> From highest to lowest:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Command line arguments<\/li>\n\n\n\n<li><code>application.properties<\/code> or <code>application.yml<\/code><\/li>\n\n\n\n<li>Environment variables<\/li>\n\n\n\n<li>Default values in code<\/li>\n<\/ol>\n\n\n\n<p><strong>Q14. What is the difference between <code>@Component<\/code>, <code>@Service<\/code>, <code>@Repository<\/code>, and <code>@Controller<\/code>?<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Annotation<\/th><th>Use Case<\/th><\/tr><\/thead><tbody><tr><td><code>@Component<\/code><\/td><td>Generic stereotype for beans<\/td><\/tr><tr><td><code>@Service<\/code><\/td><td>Business logic layer<\/td><\/tr><tr><td><code>@Repository<\/code><\/td><td>Persistence\/data access layer<\/td><\/tr><tr><td><code>@Controller<\/code><\/td><td>Web controller layer (MVC)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Q15. What is the difference between <code>application.properties<\/code> and <code>application.yml<\/code>?<\/strong><br><strong>Answer:<\/strong> Both are used for configuration, but <code>application.yml<\/code> supports hierarchical data more cleanly.<\/p>\n\n\n\n<p>Example in <code>application.yml<\/code>:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>server:<br>  port: 8080<br><\/code><\/pre>\n\n\n\n<p><strong>Q16. What is <code>@Value<\/code> annotation used for?<\/strong><br><strong>Answer:<\/strong> <code>@Value<\/code> is used to inject property values from <code>application.properties<\/code> or environment variables.<\/p>\n\n\n\n<p>Example:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@Value(\"${server.port}\")<br>private int port;<br><\/code><\/pre>\n\n\n\n<p><strong>Q17. What is a <code>@Configuration<\/code> class?<\/strong><br><strong>Answer:<\/strong> A class marked with <code>@Configuration<\/code> is used to define beans manually using <code>@Bean<\/code>.<br>It is a replacement for traditional XML configuration.<\/p>\n\n\n\n<p><strong>Q18. How do you define custom properties in Spring Boot?<\/strong><br><strong>Answer:<\/strong> You can create your own properties in <code>application.properties<\/code>:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>app.title=SpringBootApp<\/code><\/pre>\n\n\n\n<p>Then bind it using:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@Value(\"${app.title}\")<br>private String title;<br><\/code><\/pre>\n\n\n\n<p>Or map it using <code>@ConfigurationProperties<\/code>.<\/p>\n\n\n\n<p><strong>Q19. What is <code>@ConfigurationProperties<\/code> in Spring Boot?<\/strong><br><strong>Answer:<\/strong> It binds a group of related properties to a Java object.<\/p>\n\n\n\n<p>Example:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@ConfigurationProperties(prefix = \"app\")<br>public class AppConfig {<br>  private String name;<br>  private int timeout;<br>}<\/code><\/pre>\n\n\n\n<p><strong>Q20. How do you externalize configuration in Spring Boot?<\/strong><br><strong>Answer:<\/strong> Spring Boot supports:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Command-line args<\/li>\n\n\n\n<li>Environment variables<\/li>\n\n\n\n<li>External <code>.properties<\/code> or <code>.yml<\/code> files<\/li>\n\n\n\n<li><code>.env<\/code> files or cloud config servers (for distributed setups)<\/li>\n<\/ul>\n\n\n\n<p>This helps in managing different configurations for different environments (dev, test, prod).<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-elements-f461441c7dc1ba016d250495aec1bce1\"><strong>Spring Boot with Web, REST &amp; MVC (Questions 21\u201330) for Spring Boot Interview<\/strong><\/h3>\n\n\n\n<p>This section covers the web layer of Spring Boot \u2014 including building RESTful APIs, handling requests, and managing exceptions in Spring MVC.<\/p>\n\n\n\n<p><strong>Q21. How do you create a REST API using Spring Boot?<\/strong><br><strong>Answer:<\/strong> Use <code>@RestController<\/code> along with request mapping annotations like <code>@GetMapping<\/code>, <code>@PostMapping<\/code>, etc.<\/p>\n\n\n\n<p>Example:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@RestController<br>@RequestMapping(\"\/api\")<br>public class UserController {<br>  @GetMapping(\"\/users\")<br>  public List&lt;User&gt; getAllUsers() {<br>    return userService.findAll();<br>  }<br>}<\/code><\/pre>\n\n\n\n<p><strong>Q22. What is the difference between <code>@Controller<\/code> and <code>@RestController<\/code>?<\/strong><br><strong>Answer:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>@Controller<\/code> returns views (typically HTML) and is used with <code>ViewResolver<\/code>.<\/li>\n\n\n\n<li><code>@RestController<\/code> is a convenience annotation that combines <code>@Controller<\/code> and <code>@ResponseBody<\/code>, returning data (usually JSON or XML) directly in the response body.<\/li>\n<\/ul>\n\n\n\n<p><strong>Q23. What is the role of <code>@RequestMapping<\/code>, <code>@GetMapping<\/code>, and <code>@PostMapping<\/code>?<\/strong><br><strong>Answer:<\/strong> All are used to map HTTP requests to controller methods.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>@RequestMapping<\/code> can handle all HTTP methods.<\/li>\n\n\n\n<li><code>@GetMapping<\/code>, <code>@PostMapping<\/code>, etc. are specialized versions for specific HTTP verbs.<\/li>\n<\/ul>\n\n\n\n<p><strong>Q24. How do you handle form data or path variables in Spring Boot?<\/strong><br><strong>Answer:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Use <code>@RequestParam<\/code> for form\/query parameters.<\/li>\n\n\n\n<li>Use <code>@PathVariable<\/code> for dynamic path elements.<\/li>\n<\/ul>\n\n\n\n<p>Example:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@GetMapping(\"\/user\/{id}\")<br>public User getUser(@PathVariable Long id) { ... }<\/code><\/pre>\n\n\n\n<p><strong>Q25. What is the use of <code>@ResponseBody<\/code>?<\/strong><br><strong>Answer:<\/strong> <code>@ResponseBody<\/code> tells Spring to write the return value of the method directly to the HTTP response body instead of rendering a view.<\/p>\n\n\n\n<p><strong>Q26. How do you handle exceptions globally in Spring Boot?<\/strong><br><strong>Answer:<\/strong> Use <code>@ControllerAdvice<\/code> with <code>@ExceptionHandler<\/code>.<\/p>\n\n\n\n<p>Example:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@ControllerAdvice<br>public class GlobalExceptionHandler {<br>  @ExceptionHandler(UserNotFoundException.class)<br>  public ResponseEntity&lt;String&gt; handleNotFound(UserNotFoundException ex) {<br>    return new ResponseEntity&lt;&gt;(ex.getMessage(), HttpStatus.NOT_FOUND);<br>  }<br>}<\/code><\/pre>\n\n\n\n<p><strong>Q27. How do you enable Cross-Origin Resource Sharing (CORS)?<\/strong><br><strong>Answer:<\/strong> At the method level:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@CrossOrigin(origins = \"http:\/\/localhost:3000\")<br>@GetMapping(\"\/data\")<br>public List&lt;Data&gt; getData() { ... }<\/code><\/pre>\n\n\n\n<p>Globally:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@Bean<br>public WebMvcConfigurer corsConfigurer() {<br>  return new WebMvcConfigurer() {<br>    @Override<br>    public void addCorsMappings(CorsRegistry registry) {<br>      registry.addMapping(\"\/**\").allowedOrigins(\"*\");<br>    }<br>  };<br>}<br><\/code><\/pre>\n\n\n\n<p><strong>Q28. What is <code>@ModelAttribute<\/code> used for?<\/strong><br><strong>Answer:<\/strong> It binds form data to model objects in MVC apps. Commonly used with form submissions in Thymeleaf or JSP-based views.<\/p>\n\n\n\n<p><strong>Q29. How do you return a custom HTTP status in a response?<\/strong><br><strong>Answer:<\/strong> You can use <code>ResponseEntity<\/code>:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>return new ResponseEntity&lt;&gt;(user, HttpStatus.CREATED);<\/code><\/pre>\n\n\n\n<p><strong>Q30. What is the default JSON parser used in Spring Boot?<\/strong><br><strong>Answer:<\/strong> Spring Boot uses <strong>Jackson<\/strong> as the default JSON parser for serializing and deserializing objects.<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-elements-1d5a2e1e2f1695232f45d09ce9f13720\"><strong>Data Handling: JPA, Databases &amp; Repositories (Questions 31\u201340)<\/strong><\/h3>\n\n\n\n<p>This section focuses on integrating Spring Boot with databases using Spring Data JPA, repositories, and entity mapping.<\/p>\n\n\n\n<p><strong>Q31. What is Spring Data JPA?<\/strong><br><strong>Answer:<\/strong> Spring Data JPA is a part of the Spring Data family that simplifies database interactions using the Java Persistence API (JPA). It provides repository interfaces to perform CRUD operations without writing SQL.<\/p>\n\n\n\n<p><strong>Q32. What is the difference between <code>CrudRepository<\/code>, <code>JpaRepository<\/code>, and <code>PagingAndSortingRepository<\/code>?<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Interface<\/th><th>Description<\/th><\/tr><\/thead><tbody><tr><td><code>CrudRepository<\/code><\/td><td>Basic CRUD operations<\/td><\/tr><tr><td><code>PagingAndSortingRepository<\/code><\/td><td>Adds pagination and sorting<\/td><\/tr><tr><td><code>JpaRepository<\/code><\/td><td>Full JPA functionality + batch, flush, etc.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>Q33. How do you define a JPA entity in Spring Boot?<\/strong><br><strong>Answer:<\/strong> Use annotations like <code>@Entity<\/code>, <code>@Id<\/code>, and <code>@GeneratedValue<\/code>.<\/p>\n\n\n\n<p>Example:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@Entity<br>public class User {<br>  @Id<br>  @GeneratedValue(strategy = GenerationType.IDENTITY)<br>  private Long id;<br>  private String name;<br>}<\/code><\/pre>\n\n\n\n<p><strong>Q34. What is the use of <code>@Repository<\/code> annotation?<\/strong><br><strong>Answer:<\/strong> <code>@Repository<\/code> is a specialization of <code>@Component<\/code> that marks a class as a data access layer component. It also enables automatic exception translation to Spring\u2019s <code>DataAccessException<\/code>.<\/p>\n\n\n\n<p><strong>Q35. How do you configure a database connection in Spring Boot?<\/strong><br><strong>Answer:<\/strong> Use <code>application.properties<\/code> or <code>application.yml<\/code>:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>spring.datasource.url=jdbc:mysql:\/\/localhost:3306\/test<br>spring.datasource.username=root<br>spring.datasource.password=pass<br>spring.jpa.hibernate.ddl-auto=update<\/code><\/pre>\n\n\n\n<p><strong>Q36. What does <code>spring.jpa.hibernate.ddl-auto=update<\/code> mean?<\/strong><br><strong>Answer:<\/strong><br>It auto-generates or updates the database schema. Common options:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>none<\/code>: No change<\/li>\n\n\n\n<li><code>update<\/code>: Modifies schema if needed<\/li>\n\n\n\n<li><code>create<\/code>: Creates schema every time<\/li>\n\n\n\n<li><code>create-drop<\/code>: Drops schema at shutdown<\/li>\n\n\n\n<li><code>validate<\/code>: Verifies schema matches entity classes<\/li>\n<\/ul>\n\n\n\n<p><strong>Q37. How do you perform a custom query in Spring Data JPA?<\/strong><br><strong>Answer:<\/strong> Use <code>@Query<\/code>:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@Query(\"SELECT u FROM User u WHERE u.name = ?1\")<br>List&lt;User&gt; findByName(String name);<br><\/code><\/pre>\n\n\n\n<p><strong>Q38. What is the use of <code>@Transactional<\/code> in Spring Boot?<\/strong><br><strong>Answer:<\/strong><br>It manages transaction boundaries. If a method marked <code>@Transactional<\/code> fails, the changes are rolled back automatically.<\/p>\n\n\n\n<p><strong>Q39. How do you paginate results using Spring Data JPA?<\/strong><br><strong>Answer:<\/strong> Use <code>Pageable<\/code> with <code>JpaRepository<\/code>:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>Page&lt;User&gt; findAll(Pageable pageable);<br><\/code><\/pre>\n\n\n\n<p><strong>Q40. How do you handle relationships like OneToMany and ManyToOne in JPA?<\/strong><br><strong>Answer:<\/strong> Use annotations like:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@OneToMany(mappedBy = \"user\")<br>private List&lt;Order&gt; orders;<br><br>@ManyToOne<br>@JoinColumn(name = \"user_id\")<br>private User user;<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading has-text-align-center has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-elements-536a50fc9dea538bb7663cbe37127fd6\"><strong>Advanced Concepts: Actuator, Security &amp; Microservices (Questions 41\u201350)<\/strong><\/h3>\n\n\n\n<p>This section focuses on advanced Spring Boot features like health monitoring, security, and building microservices using Spring Cloud.<\/p>\n\n\n\n<p><strong>Q41. What is Spring Boot Actuator?<\/strong><br><strong>Answer:<\/strong> Spring Boot Actuator provides production-ready endpoints to monitor and manage the application.<br>Examples: <code>\/actuator\/health<\/code>, <code>\/actuator\/metrics<\/code>, <code>\/actuator\/env<\/code><\/p>\n\n\n\n<p>To enable it:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>management.endpoints.web.exposure.include=*<br><\/code><\/pre>\n\n\n\n<p><strong>Q42. How do you secure endpoints in Spring Boot?<\/strong><br><strong>Answer:<\/strong> Use Spring Security along with role-based access controls.<br>Example:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@EnableWebSecurity<br>public class SecurityConfig extends WebSecurityConfigurerAdapter {<br>  @Override<br>  protected void configure(HttpSecurity http) throws Exception {<br>    http.authorizeRequests()<br>        .antMatchers(\"\/admin\/**\").hasRole(\"ADMIN\")<br>        .anyRequest().authenticated()<br>        .and().formLogin();<br>  }<br>}<\/code><\/pre>\n\n\n\n<p><strong>Q43. What is <code>BCryptPasswordEncoder<\/code>?<\/strong><br><strong>Answer:<\/strong> It is a password-hashing algorithm used to securely store passwords in Spring Security.<br>Usage:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>BCryptPasswordEncoder encoder = new BCryptPasswordEncoder();<br>String hashed = encoder.encode(\"password123\");<\/code><\/pre>\n\n\n\n<p><strong>Q44. What are profiles in Spring Boot?<\/strong><br><strong>Answer:<\/strong> Profiles allow you to define separate configurations for different environments (dev, test, prod).<\/p>\n\n\n\n<p>Use:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>spring.profiles.active=dev<\/code><\/pre>\n\n\n\n<p>And define:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>application-dev.properties<\/code><\/li>\n\n\n\n<li><code>application-prod.properties<\/code><\/li>\n<\/ul>\n\n\n\n<p><strong>Q45. What is a microservice in Spring Boot?<\/strong><br><strong>Answer:<\/strong> A microservice is a small, independently deployable service that performs a specific function. Spring Boot makes building microservices easy due to its embedded server, minimal configuration, and Spring Cloud support.<\/p>\n\n\n\n<p><strong>Q46. What is Spring Cloud?<\/strong><br><strong>Answer:<\/strong> Spring Cloud builds on top of Spring Boot to develop distributed systems. It provides features like configuration management, service discovery, load balancing, and circuit breakers.<\/p>\n\n\n\n<p><strong>Q47. What is Eureka in Spring Cloud?<\/strong><br><strong>Answer:<\/strong> Eureka is a service registry that enables microservices to discover each other.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Services register themselves with Eureka<\/li>\n\n\n\n<li>Other services use Eureka to locate them<\/li>\n<\/ul>\n\n\n\n<p><strong>Q48. What is Feign in Spring Cloud?<\/strong><br><strong>Answer:<\/strong> Feign is a declarative REST client. It simplifies calling other microservices.<\/p>\n\n\n\n<p>Example:<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><code>@FeignClient(name = \"user-service\")<br>public interface UserClient {<br>  @GetMapping(\"\/users\/{id}\")<br>  User getUserById(@PathVariable(\"id\") Long id);<br>}<br><\/code><\/pre>\n\n\n\n<p><strong>Q49. What is Zuul or Spring Cloud Gateway?<\/strong><br><strong>Answer:<\/strong> Zuul (deprecated) and Spring Cloud Gateway are API gateways used to route requests, perform filtering, and manage cross-cutting concerns like authentication and rate limiting.<\/p>\n\n\n\n<p><strong>Q50. What is a circuit breaker in microservices?<\/strong><br><strong>Answer:<\/strong> It prevents cascading failures by stopping calls to a failing service temporarily.<br>Spring Boot supports this using <strong>Resilience4j<\/strong> or <strong>Hystrix<\/strong> (now deprecated).<\/p>\n\n\n\n<h3 class=\"wp-block-heading has-white-color has-vivid-cyan-blue-background-color has-text-color has-background has-link-color wp-elements-ff3122b48247f5cb3b12fcc63356c38c\">Core Concepts to Revise before Spring Boot Interview <\/h3>\n\n\n\n<p>Here is a list of <strong>core concepts to revise<\/strong> before appearing for a Spring Boot interview. These are categorized by topic to help you focus your revision efficiently:<\/p>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1. Spring Boot Fundamentals<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>What is Spring Boot and how it differs from Spring Framework<\/li>\n\n\n\n<li><code>@SpringBootApplication<\/code> and its internal annotations<\/li>\n\n\n\n<li>Auto-configuration and how it works<\/li>\n\n\n\n<li>Spring Boot starters and dependency management<\/li>\n\n\n\n<li>Embedded servers (Tomcat, Jetty, Undertow)<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>2. Configuration and Properties<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>application.properties<\/code> vs <code>application.yml<\/code><\/li>\n\n\n\n<li>Property resolution order<\/li>\n\n\n\n<li><code>@Value<\/code> vs <code>@ConfigurationProperties<\/code><\/li>\n\n\n\n<li>Externalized configuration<\/li>\n\n\n\n<li>Profiles (<code>spring.profiles.active<\/code>) and environment-specific config<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>3. Dependency Injection &amp; Annotations<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Component scanning (<code>@ComponentScan<\/code>)<\/li>\n\n\n\n<li>Bean lifecycle and scopes<\/li>\n\n\n\n<li>Key annotations: <code>@Component<\/code>, <code>@Service<\/code>, <code>@Repository<\/code>, <code>@Controller<\/code>, <code>@RestController<\/code><\/li>\n\n\n\n<li><code>@Autowired<\/code>, constructor injection, and field injection<\/li>\n\n\n\n<li><code>@Bean<\/code> and <code>@Configuration<\/code><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>4. Spring MVC and REST APIs<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>@RestController<\/code> vs <code>@Controller<\/code><\/li>\n\n\n\n<li><code>@RequestMapping<\/code>, <code>@GetMapping<\/code>, <code>@PostMapping<\/code>, etc.<\/li>\n\n\n\n<li><code>@PathVariable<\/code> vs <code>@RequestParam<\/code><\/li>\n\n\n\n<li>Exception handling (<code>@ControllerAdvice<\/code>, <code>@ExceptionHandler<\/code>)<\/li>\n\n\n\n<li>JSON serialization with Jackson<\/li>\n\n\n\n<li>CORS configuration<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>5. Spring Data JPA and Database Integration<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>@Entity<\/code>, <code>@Id<\/code>, <code>@GeneratedValue<\/code>, and relationships (<code>@OneToMany<\/code>, <code>@ManyToOne<\/code>)<\/li>\n\n\n\n<li>Repositories: <code>CrudRepository<\/code>, <code>JpaRepository<\/code>, <code>PagingAndSortingRepository<\/code><\/li>\n\n\n\n<li>Custom queries with <code>@Query<\/code><\/li>\n\n\n\n<li>Transaction management (<code>@Transactional<\/code>)<\/li>\n\n\n\n<li>Database configuration via <code>application.properties<\/code><\/li>\n\n\n\n<li>Schema generation (<code>spring.jpa.hibernate.ddl-auto<\/code>)<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>6. Spring Boot Actuato<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Purpose and endpoints (<code>\/actuator\/health<\/code>, <code>\/metrics<\/code>, etc.)<\/li>\n\n\n\n<li>Enabling and customizing actuator endpoints<\/li>\n\n\n\n<li>Securing actuator endpoints<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>7. Spring Security (Basics)<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Configuring basic authentication and authorization<\/li>\n\n\n\n<li><code>WebSecurityConfigurerAdapter<\/code> and <code>HttpSecurity<\/code><\/li>\n\n\n\n<li>Role-based access control<\/li>\n\n\n\n<li>Password encoding with <code>BCryptPasswordEncoder<\/code><\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>8. Spring Boot Microservices Concepts<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>What is a microservice?<\/li>\n\n\n\n<li>Service discovery with Eureka<\/li>\n\n\n\n<li>REST communication using Feign clients<\/li>\n\n\n\n<li>API Gateway (Spring Cloud Gateway)<\/li>\n\n\n\n<li>Circuit breaker pattern with Resilience4j<\/li>\n\n\n\n<li>Centralized configuration (Spring Cloud Config)<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>9. Testing in Spring Boot<\/strong><\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Writing unit tests with JUnit and Mockito<\/li>\n\n\n\n<li><code>@SpringBootTest<\/code>, <code>@WebMvcTest<\/code>, <code>@DataJpaTest<\/code><\/li>\n\n\n\n<li>Mocking service layers<\/li>\n\n\n\n<li>Testing REST endpoints<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Conclusion<\/strong><\/h3>\n\n\n\n<p>Spring Boot has become the backbone of modern Java backend development, especially for building microservices and enterprise-grade applications. This curated list of Top 50 Spring Boot Interview Questions and Answers is designed to help you revise key concepts, understand real-world usage, and prepare confidently for interviews.<\/p>\n\n\n\n<p>Whether you are a fresher starting your journey or an experienced developer brushing up for a role switch, mastering these topics will give you a strong foundation. Remember, along with theoretical knowledge, hands-on practice and clear explanations are what make a candidate stand out.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/www.skilr.com\/spring-boot-free-practice-test\" target=\"_blank\" rel=\" noreferrer noopener\"><img data-dominant-color=\"515f65\" data-has-transparency=\"false\" style=\"--dominant-color: #515f65;\" decoding=\"async\" sizes=\"(max-width: 960px) 100vw, 960px\" src=\"https:\/\/www.skilr.com\/blog\/wp-content\/uploads\/2025\/07\/Top-50-Spring-Boot-Interview-Questions-and-Answers-banner-1.png\" alt=\"Spring Boot Free Test\" class=\"wp-image-4022 not-transparent\"\/><\/a><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Spring Boot has become the go-to framework for building production-ready Java applications quickly and efficiently and Spring Boot interviews have become more challenging. Built on top of the Spring Framework, it eliminates boilerplate code, simplifies configuration, and enables developers to create stand-alone, microservice-based applications with minimal effort. As enterprise applications increasingly adopt microservices and cloud-native [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":4021,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1684,1683],"tags":[1688,1686,1685,1692,1690,1691,1687,1689,1483,1693],"class_list":{"0":"post-4019","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-software-development","8":"category-web-development","9":"tag-interview-questions-and-answer-spring-boot","10":"tag-java-spring-boot-interview-questions-and-answers","11":"tag-spring-boot-interview-questions-and-answers","12":"tag-spring-boot-interview-questions-and-answers-for-experienced","13":"tag-spring-boot-interview-questions-and-answers-for-freshers","14":"tag-spring-boot-questions-and-answers","15":"tag-spring-interview-questions-and-answers","16":"tag-springboot-interview-questions-and-answers","17":"tag-top-java-interview-questions-and-answers","18":"tag-top-spring-boot-interview-questions"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Top 50 Spring Boot Interview Questions and Answers - Skilr Blog<\/title>\n<meta name=\"description\" content=\"Prepare for backend and Java developer interviews with this Top 50 Spring Boot Interview Questions and Answers guide.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Top 50 Spring Boot Interview Questions and Answers - Skilr Blog\" \/>\n<meta property=\"og:description\" content=\"Prepare for backend and Java developer interviews with this Top 50 Spring Boot Interview Questions and Answers guide.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/\" \/>\n<meta property=\"og:site_name\" content=\"Skilr Blog\" \/>\n<meta property=\"article:published_time\" content=\"2025-07-30T07:32:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-07-30T09:10:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.skilr.com\/blog\/wp-content\/uploads\/2025\/07\/Top-50-Spring-Boot-Interview-Questions-and-Answers-1.png\" \/>\n\t<meta property=\"og:image:width\" content=\"750\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Anandita Doda\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Anandita Doda\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"10 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/\"},\"author\":{\"name\":\"Anandita Doda\",\"@id\":\"https:\/\/www.skilr.com\/blog\/#\/schema\/person\/218260d62d3339338ae5afdb5f5c449a\"},\"headline\":\"Top 50 Spring Boot Interview Questions and Answers\",\"datePublished\":\"2025-07-30T07:32:00+00:00\",\"dateModified\":\"2025-07-30T09:10:33+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/\"},\"wordCount\":2070,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.skilr.com\/blog\/wp-content\/uploads\/2025\/07\/Top-50-Spring-Boot-Interview-Questions-and-Answers-1.webp\",\"keywords\":[\"interview questions and answer spring boot\",\"java spring boot interview questions and answers\",\"spring boot interview questions and answers\",\"spring boot interview questions and answers for experienced\",\"spring boot interview questions and answers for freshers\",\"spring boot questions and answers\",\"spring interview questions and answers\",\"springboot interview questions and answers\",\"top java interview questions and answers\",\"top spring boot interview questions\"],\"articleSection\":[\"Software Development\",\"Web Development\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/\",\"url\":\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/\",\"name\":\"Top 50 Spring Boot Interview Questions and Answers - Skilr Blog\",\"isPartOf\":{\"@id\":\"https:\/\/www.skilr.com\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.skilr.com\/blog\/wp-content\/uploads\/2025\/07\/Top-50-Spring-Boot-Interview-Questions-and-Answers-1.webp\",\"datePublished\":\"2025-07-30T07:32:00+00:00\",\"dateModified\":\"2025-07-30T09:10:33+00:00\",\"author\":{\"@id\":\"https:\/\/www.skilr.com\/blog\/#\/schema\/person\/218260d62d3339338ae5afdb5f5c449a\"},\"description\":\"Prepare for backend and Java developer interviews with this Top 50 Spring Boot Interview Questions and Answers guide.\",\"breadcrumb\":{\"@id\":\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#primaryimage\",\"url\":\"https:\/\/www.skilr.com\/blog\/wp-content\/uploads\/2025\/07\/Top-50-Spring-Boot-Interview-Questions-and-Answers-1.webp\",\"contentUrl\":\"https:\/\/www.skilr.com\/blog\/wp-content\/uploads\/2025\/07\/Top-50-Spring-Boot-Interview-Questions-and-Answers-1.webp\",\"width\":750,\"height\":400,\"caption\":\"Top 50 Spring Boot Interview Questions and Answers\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.skilr.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Top 50 Spring Boot Interview Questions and Answers\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.skilr.com\/blog\/#website\",\"url\":\"https:\/\/www.skilr.com\/blog\/\",\"name\":\"Skilr Blog\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.skilr.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.skilr.com\/blog\/#\/schema\/person\/218260d62d3339338ae5afdb5f5c449a\",\"name\":\"Anandita Doda\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.skilr.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/440295a704e9c104e3a16811183811618885ee5b19dae8f4007736a01fb12a68?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/440295a704e9c104e3a16811183811618885ee5b19dae8f4007736a01fb12a68?s=96&d=mm&r=g\",\"caption\":\"Anandita Doda\"},\"url\":\"https:\/\/www.skilr.com\/blog\/author\/anandita2001dodagmail-com\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Top 50 Spring Boot Interview Questions and Answers - Skilr Blog","description":"Prepare for backend and Java developer interviews with this Top 50 Spring Boot Interview Questions and Answers guide.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/","og_locale":"en_US","og_type":"article","og_title":"Top 50 Spring Boot Interview Questions and Answers - Skilr Blog","og_description":"Prepare for backend and Java developer interviews with this Top 50 Spring Boot Interview Questions and Answers guide.","og_url":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/","og_site_name":"Skilr Blog","article_published_time":"2025-07-30T07:32:00+00:00","article_modified_time":"2025-07-30T09:10:33+00:00","og_image":[{"width":750,"height":400,"url":"https:\/\/www.skilr.com\/blog\/wp-content\/uploads\/2025\/07\/Top-50-Spring-Boot-Interview-Questions-and-Answers-1.png","type":"image\/png"}],"author":"Anandita Doda","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Anandita Doda","Est. reading time":"10 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#article","isPartOf":{"@id":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/"},"author":{"name":"Anandita Doda","@id":"https:\/\/www.skilr.com\/blog\/#\/schema\/person\/218260d62d3339338ae5afdb5f5c449a"},"headline":"Top 50 Spring Boot Interview Questions and Answers","datePublished":"2025-07-30T07:32:00+00:00","dateModified":"2025-07-30T09:10:33+00:00","mainEntityOfPage":{"@id":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/"},"wordCount":2070,"commentCount":0,"image":{"@id":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#primaryimage"},"thumbnailUrl":"https:\/\/www.skilr.com\/blog\/wp-content\/uploads\/2025\/07\/Top-50-Spring-Boot-Interview-Questions-and-Answers-1.webp","keywords":["interview questions and answer spring boot","java spring boot interview questions and answers","spring boot interview questions and answers","spring boot interview questions and answers for experienced","spring boot interview questions and answers for freshers","spring boot questions and answers","spring interview questions and answers","springboot interview questions and answers","top java interview questions and answers","top spring boot interview questions"],"articleSection":["Software Development","Web Development"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/","url":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/","name":"Top 50 Spring Boot Interview Questions and Answers - Skilr Blog","isPartOf":{"@id":"https:\/\/www.skilr.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#primaryimage"},"image":{"@id":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#primaryimage"},"thumbnailUrl":"https:\/\/www.skilr.com\/blog\/wp-content\/uploads\/2025\/07\/Top-50-Spring-Boot-Interview-Questions-and-Answers-1.webp","datePublished":"2025-07-30T07:32:00+00:00","dateModified":"2025-07-30T09:10:33+00:00","author":{"@id":"https:\/\/www.skilr.com\/blog\/#\/schema\/person\/218260d62d3339338ae5afdb5f5c449a"},"description":"Prepare for backend and Java developer interviews with this Top 50 Spring Boot Interview Questions and Answers guide.","breadcrumb":{"@id":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#primaryimage","url":"https:\/\/www.skilr.com\/blog\/wp-content\/uploads\/2025\/07\/Top-50-Spring-Boot-Interview-Questions-and-Answers-1.webp","contentUrl":"https:\/\/www.skilr.com\/blog\/wp-content\/uploads\/2025\/07\/Top-50-Spring-Boot-Interview-Questions-and-Answers-1.webp","width":750,"height":400,"caption":"Top 50 Spring Boot Interview Questions and Answers"},{"@type":"BreadcrumbList","@id":"https:\/\/www.skilr.com\/blog\/top-50-spring-boot-interview-questions-and-answers\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.skilr.com\/blog\/"},{"@type":"ListItem","position":2,"name":"Top 50 Spring Boot Interview Questions and Answers"}]},{"@type":"WebSite","@id":"https:\/\/www.skilr.com\/blog\/#website","url":"https:\/\/www.skilr.com\/blog\/","name":"Skilr Blog","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.skilr.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.skilr.com\/blog\/#\/schema\/person\/218260d62d3339338ae5afdb5f5c449a","name":"Anandita Doda","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.skilr.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/440295a704e9c104e3a16811183811618885ee5b19dae8f4007736a01fb12a68?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/440295a704e9c104e3a16811183811618885ee5b19dae8f4007736a01fb12a68?s=96&d=mm&r=g","caption":"Anandita Doda"},"url":"https:\/\/www.skilr.com\/blog\/author\/anandita2001dodagmail-com\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.skilr.com\/blog\/wp-json\/wp\/v2\/posts\/4019","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.skilr.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.skilr.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.skilr.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.skilr.com\/blog\/wp-json\/wp\/v2\/comments?post=4019"}],"version-history":[{"count":6,"href":"https:\/\/www.skilr.com\/blog\/wp-json\/wp\/v2\/posts\/4019\/revisions"}],"predecessor-version":[{"id":4074,"href":"https:\/\/www.skilr.com\/blog\/wp-json\/wp\/v2\/posts\/4019\/revisions\/4074"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.skilr.com\/blog\/wp-json\/wp\/v2\/media\/4021"}],"wp:attachment":[{"href":"https:\/\/www.skilr.com\/blog\/wp-json\/wp\/v2\/media?parent=4019"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.skilr.com\/blog\/wp-json\/wp\/v2\/categories?post=4019"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.skilr.com\/blog\/wp-json\/wp\/v2\/tags?post=4019"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}