Request Mapping and HTTP Method Annotations | Spring Boot Interview Series #13

In this video, we will discuss Request Mapping and HTTP Method Annotations in Spring Boot. This is Video #13 of our Spring Boot Interview Series. In the previous video, we discussed Spring MVC Request Flow and DispatcherServlet. We understood how a request reaches the controller inside a Spring Boot REST API. Now, in this video, we will understand how Spring Boot decides which controller method should handle which URL and HTTP method. Topics covered in this video: 1. What is `@RequestMapping` in Spring MVC? 2. What are HTTP method-specific mapping annotations? 3. Difference between `@PathVariable` and `@RequestParam` We will discuss important mapping annotations like: `@RequestMapping` `@GetMapping` `@PostMapping` `@PutMapping` `@PatchMapping` `@DeleteMapping` For example, in a course management application: `GET /courses` is used to fetch courses `POST /courses` is used to create a new course `PUT /courses/{id}` is used to update a complete course `PATCH /courses/{id}` is used for partial update `DELETE /courses/{id}` is used to delete a course We will also understand the difference between `@PathVariable` and `@RequestParam`. `@PathVariable` is used when the value is part of the URL path, such as: `/courses/101` `@RequestParam` is used when the value is passed as a query parameter, such as: `/courses?category=java&page=1` By the end of this video, you will be able to clearly explain request mapping annotations, HTTP method annotations, and the difference between `@PathVariable` and `@RequestParam` in Spring Boot interviews. Watch the complete Spring Boot Interview Series playlist: [   • Spring Boot Interview Questions  ](   • Spring Boot Interview Questions  ) Connect with me on LinkedIn: [  / deep473  ](  / deep473  ) Subscribe to Hosiyar.com for more Java, Spring Boot, Backend Development, and Interview Preparation content. #SpringBoot #SpringBootInterviewQuestions #SpringMVC #RestAPI #JavaInterview #JavaBackend #HosiyarDotCom