What is @RequestMapping and @GetMapping?

@RequestMapping is used at the class level while @GetMapping is used to connect the methods. This is also an important Spring MVC interview question to knowing how and when to use both RequestMapping and GetMapping is crucial for Java developers.

What is ClassPathXmlApplicationContext in Spring?

The Spring container is responsible for instantiating and managing the lifecycle of Spring beans. The ClassPathXmlApplicationContext is a class that implements the org. springframework. context. ApplicationContext interface.

What is the use of @SpringBootApplication?

Spring Boot @SpringBootApplication annotation is used to mark a configuration class that declares one or more @Bean methods and also triggers auto-configuration and component scanning. It’s same as declaring a class with @Configuration, @EnableAutoConfiguration and @ComponentScan annotations.

What is GetMapping?

Annotation for mapping HTTP GET requests onto specific handler methods. Specifically, @GetMapping is a composed annotation that acts as a shortcut for @RequestMapping(method = RequestMethod.

What is GetMapping in Java?

The @GetMapping annotation is a specialized version of @RequestMapping annotation that acts as a shortcut for @RequestMapping(method = RequestMethod. GET) . The @GetMapping annotated methods in the @Controller annotated classes handle the HTTP GET requests matched with given URI expression.

What is getBean in Spring?

getBean. Object getBean(String name) throws BeansException. Return an instance, which may be shared or independent, of the specified bean. This method allows a Spring BeanFactory to be used as a replacement for the Singleton or Prototype design pattern.

What is IoC in Spring with example?

Spring IoC Container is the core of Spring Framework. It creates the objects, configures and assembles their dependencies, manages their entire life cycle….Spring – IoC Container.

Feature BeanFactory ApplicationContext
Bean Instantiation/Wiring Yes Yes
Internationalization No Yes
Enterprise Services No Yes
ApplicationEvent publication No Yes

Categories: Blog