@Role of pathvariable annotation

@PathVariable: Used to get requests url Placeholder in

Example :

    @PutMapping("/user/{userId}")
    @ResponseBody
    public List<User> update(@PathVariable(value = "userId") Long userId,@RequestBody User user){
        // TODO
        return null;
    }

{userId} In this request url Inside is a variable , have access to @PathVariable To get