How to pass header parameters as method inputs in JAX-RS restful web services?

In this page you can see an example to pass http header info as a method input using @HeaderParam annotation.

In the previous examples we have given details of application setup, dependencies, web.xml file configurations: If you want to know about these configuration, please refer these:

Restful web services using RESTEasy hello world example.
Restful web services using Jersey hello world example.

package com.java2novice.restful;

import javax.ws.rs.GET;
import javax.ws.rs.HeaderParam;
import javax.ws.rs.Path;
import javax.ws.rs.core.Response;

@Path("/http-header")
public class HttpHeaderService {

	@GET
	@Path("query")
	public Response queryHeaderInfo(@HeaderParam("Cache-Control") String ccControl,
										@HeaderParam("User-Agent") String uaStr){
		
		String resp = "Received http headers are Cache-Control: "+ccControl+
						"<br>User-Agent: "+uaStr;
		return Response.status(200).entity(resp).build();
	} 
}

In the above example, if you use "http://localhost:8080/RestfulWebServices/http-header/query" URI pattern, here is the output:

Output:

Received http headers are Cache-Control: max-age=0
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) 
			Chrome/38.0.2125.104 Safari/537.36

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How to pass header parameters as method inputs in JAX-RS restful web services?

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