@RequestHeader in Spring MVC

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
public class RequestHeaderExampleController{
    @RequestMapping(value = "/example", method = RequestMethod.GET)
    public String  getHello(@RequestHeader ("host") String hostName,
            @RequestHeader ("Accept") String acceptType,
            @RequestHeader ("Accept-Language") String acceptLang,
            @RequestHeader ("Accept-Encoding") String acceptEnc,
            @RequestHeader ("Cache-Control") String cacheCon,
            @RequestHeader ("Cookie") String cookie,
            @RequestHeader ("User-Agent") String userAgent){
        System.out.println("Host : " + hostName);
        System.out.println("Accept : " + acceptType);
        System.out.println("Accept Language : " + acceptLang);
        System.out.println("Accept Encoding : " + acceptEnc);
        System.out.println("Cache-Control : " + cacheCon);
        System.out.println("Cookie : " + cookie);
        System.out.println("User-Agent : " + userAgent);
        return "example";
    }
}