@RequestMapping

@RequestMapping is an annotation used in Spring Framework to map a URL request to a specific method in a controller class. It allows developers to specify the URL pattern for which the method will be executed, as well as the HTTP method (GET, POST, PUT, DELETE, etc.) that should be used to access the method. The @RequestMapping annotation can also be used to specify other parameters, such as request headers, request parameters, and path variables. This annotation is widely used in Spring MVC applications to route incoming requests to the appropriate controller method.