Are JavaBean and Spring bean the same?
JavaBeans vs. JavaBeans are manually configured; Spring beans use XML configuration, annotation or Java-based configuration. JavaBeans have manual lifecycle management; Spring beans are managed by Spring Framework. JavaBeans do not have annotation support, while Spring beans have annotation-based configuration. You can use @Bean -annotated methods with any Spring @Component . However, they are most often used with @Configuration beans. Annotating a class with @Configuration indicates that its primary purpose is as a source of bean definitions.Last Updated : 23 Jul, 2025. The @Bean annotation in Spring is a powerful way to define and manage beans in a Spring application. Unlike @Component, which relies on class-level scanning, @Bean explicitly declares beans inside @Configuration classes, offering greater flexibility in object creation.In Spring, the @Autowired annotation provides a convenient way to automatically inject dependencies into a class. However, it’s not always recommended due to several potential drawbacks that can affect code quality, maintainability, and testing.To declare a bean, you can annotate a method with the @Bean annotation. You use this method to register a bean definition within an ApplicationContext of the type specified as the method’s return value. By default, the bean name is the same as the method name.
What is the difference between POJO JavaBean and Spring bean?
POJOs and JavaBeans are used independently of any frameworks, while Spring Beans are tightly integrated with the Spring framework and managed by the Spring IoC container. Is Spring Boot still worth learning in 2025? Absolutely. While new frameworks appear every year, Spring Boot continues to power millions of production systems — from fintech APIs to cloud-native microservices and AI-powered platforms.Spring and Spring Boot are still a solid bet for anyone in Java development. In 2025, if you’re serious about what you’re doing, learning these frameworks is more of a no-brainer than a choice.Spring Boot is an open source, microservice-based Java web framework. The Spring Boot framework creates a fully production-ready environment that is completely configurable using its prebuilt code within its codebase.
What is the difference between @component and @bean?
Component vs @Bean The @Bean annotation is a method-level annotation, whereas @Component is a class-level annotation. The @Component annotation doesn’t need to be used with the @Configuration annotation, whereas the @Bean generic annotation has to be used within a class annotated with @Configuration . Can we use @Component instead of @Controller? Using @Component instead of @Controller is not suitable for web-specific functionalities like handling HTTP requests. While both are generic stereotypes annotations, @Controller is made for web layer components and supports additional features for web-related processing.The @RequestMapping annotation is used to map web requests to specific handler methods, while @RestController is used to define RESTful web services.