How can parameters be extracted from an incoming HTTP request?

In Java, parameters from an incoming HTTP request can be extracted in several ways depending on the framework used:

• In the Servlet API, through methods like request.getParameter("paramName") to obtain parameters from the query string or form.
• In Spring MVC, using annotations such as @RequestParam for request parameters, @PathVariable for path variables, and @RequestBody for the request body.

Example with Spring MVC:

@GetMapping("/users")
public String getUser(@RequestParam String id) {
    // id will be extracted from the request parameters
    return "User id: " + id;
}