Which function handles routing requests to different containers?

In Java server applications, the component responsible for routing requests to different containers (such as servlets) is called the Servlet Dispatcher. Within a servlet container like Tomcat, it is this component that receives HTTP requests and directs them to the appropriate servlets based on URL patterns specified in the configuration (web.xml or annotations).

In Spring MVC, for example, routing is handled by the DispatcherServlet, which analyzes the request and invokes the corresponding controller.