doHead() method calls??

[Poonam Agarwal]

Which of the following statements is correct?

1. GenericServlet defines but does not implement doHead() method.
2. The default implementation of HttpServlet class's doHead() method calls the doGet() method.
3. The HttpServlet class does not implement a dummy doHead() method.
4. There is no special method for HEAD request, doGet() handles HEAD requests.
5. If the servlet does not implement doHead(), doGet() will be called upon HTTP HEAD request.

The above question is from Enthuware mock and the mentioned right option is 2.

Can anybody elaborate it more OR suggest something to verify for the same.

Thanks

[Ankit Garg]

well the doHead method of HttpServlet class calls the doGet method and returns only the headers of the response to the client. To test this I think you'll have to make a custom doHead request to a servlet using java.net.Socket or java.net.URL class. If there is any other easier way then I don't know about it...

[Ankit Garg]

This is from the documentation of doGet method of HttpServlet class

Overriding this method to support a GET request also automatically supports an HTTP HEAD request. A HEAD request is a GET request that returns no body in the response, only the request header fields.

 

[Sourin K. Sen]

 

Ankit Garg wrote:To test this I think you'll have to make a custom doHead request to a servlet using java.net.Socket or java.net.URL class. If there is any other easier way then I don't know about it...

There surely isnt any easier method to do this. Either use these classes or some other library, but in either case, you will end up creating connections and making calls manually via code.

[Suresh Babu Venkat]

 

Poonam Agarwal wrote:Which of the following statements is correct?

1. GenericServlet defines but does not implement doHead() method.
2. The default implementation of HttpServlet class's doHead() method calls the doGet() method.
3. The HttpServlet class does not implement a dummy doHead() method.
4. There is no special method for HEAD request, doGet() handles HEAD requests.
5. If the servlet does not implement doHead(), doGet() will be called upon HTTP HEAD request.

The above question is from Enthuware mock and the mentioned right option is 2.

Can anybody elaborate it more OR suggest something to verify for the same.

Thanks

i am just wondering if 2 is correct, option 5 also should be correct ,but why only 2 is given as answer

or if we dont override any doXXX method and call that method,its throws a exception?