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Go to answer 10

Question 11

True or False?

Overriding the doGet method to support the GET command also automatically supports the HTTP HEAD command.

Go to answer 11

Question 12

True or False?

The fundamental purpose of the GET command makes it possible for the client to get something from the server. When you override the doGet method, you should, as a minimum:

  • Read data from the request
  • Construct the proper headers in the response
  • Gain access to either the writer or the output stream (depending on whether the material to be returned is text or binary data)
  • Write the response data

Go to answer 12

Question 13

True or False?

The headers that you create in your overridden doGet method should include content type and encoding. The content type must be set beforethe writer is accessed. The setContentType method of the response object can be called to set the content type. The getWriter method of the response object can be called to get access to the output stream.

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Question 14

True or False?

The class definition for an HTTP servlet extends the JavaHttpServlet class.

Go to answer 14

Question 15

True or False?

Servlets typically process requests from multiple clients concurrently in a multithreaded manner. However, it is possible to write servlets that arerestricted to single-threaded operation by implementing the SingleThreadModel interface.

Go to answer 15

Question 16

True or False?

When writing a servlet for multi-threaded operation, you should use the fewest possible number of instance variables, and synchronize access to them if you use them.

Go to answer 16

Question 17

True or False?

For servlets that extend the HttpServlet class, the following methods may be overridden to cause your servlet to interact with theclient.

  • doGet - for handling GET, conditional GET and HEAD requests
  • doPost - for handling POST requests
  • doPut - for handling PUT requests
  • doDelete - for handling DELETE requests
  • doTerminate - for terminating the servlet and returning control to the browser

Go to answer 17

What is the meaning of the following two images?

These images were inserted here simply to insert some space between the questions and the answers to keep them from being visible on the screen at thesame time.

Spacer image of a rabbit and a penguin.

This image was also inserted for the purpose of inserting space between the questions and the answers.

Spacer image of a penguin and some houses.

Answers

Answer 17

False.

For servlets that extend the HttpServlet class, the following four methods may be overridden to cause your servlet to interact withthe client.

  • doGet - for handling GET, conditional GET and HEAD requests
  • doPost - for handling POST requests
  • doPut - for handling PUT requests
  • doDelete - for handling DELETE requests

Go back to Question 17

Answer 16

True.

Go back to Question 16

Answer 15

True.

Go back to Question 15

Answer 14

False. The class definition for an HTTP servlet extends the HttpServlet class.

Go back to Question 14

Answer 13

True.

Go back to Question 13

Answer 12

True.

Go back to Question 12

Answer 11

True.

Go back to Question 11

Answer 10

False. The doGet method corresponds to the HTTP GET command. If you don't override the method, the default implementation reports an HTTP BAD_REQUEST error when the browser sends a GET command.

Go back to Question 10

Answer 9

True.

Go back to Question 9

Answer 8

True.

Go back to Question 8

Answer 7

False.

Object references of the following types are passed to a servlet when it called by a client:

  • ServletRequest - encapsulates the communication from the client to the server.
  • ServletResponse - encapsulates the communication from the servlet back to the client

Go back to Question 7

Answer 6

True.

Go back to Question 6

Answer 5

False. All servlets must implement the Servlet interface. You can implement it directly. However, it is more common to implement itindirectly by extending a class that implements the interface (such as HttpServlet ).

Go back to Question 5

Answer 4

True.

Go back to Question 4

Answer 3

False. The use of servlets is not restricted to HTTP servers.

Go back to Question 3

Answer 2

False. You must run your servlet under the control of a Java-enabled server program. Not all HTTP servers support Java servlets.

Go back to Question 2

Answer 1

True.

Go back to Question 1

Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Java4535r-Review
  • File: Java4535r.htm
  • Published: 03/10/14
  • Revised 12/26/14
Disclaimers:

Financial : Although the Connexions site makes it possible for you to download aPDF file for this module at no charge, and also makes it possible for you to purchase a pre-printed version of the PDF file, youshould be aware that some of the HTML elements in this module may not translate well into PDF.

I also want you to know that, I receive no financial compensation from the Connexions website even if you purchase the PDF version ofthe module.

In the past, unknown individuals have copied my modules from cnx.org, converted them to Kindle books, and placed them for sale onAmazon.com showing me as the author. I neither receive compensation for those sales nor do I know who does receive compensation. If youpurchase such a book, please be aware that it is a copy of a module that is freely available on cnx.org and that it was made andpublished without my prior knowledge.

Affiliation : I am a professor of Computer Information Technology at Austin Community College in Austin, TX.

-end-

Questions & Answers

Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
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