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I showed you how to create a batch file for compiling your servlet. The batch file that I provided includes these jar files on the classpath. This hasthe effect of making the following packages, among others, available to your compiler. This is a requirement for writing and compiling servlets and JSP.

  • javax.servlet
  • javax.servlet.http
  • javax.servlet.jsp

You should make certain that you can successfully compile, deploy, and access the sample servlet that I provided in Java4308 before continuing with this module.

Discussion and sample code

Before leaving this module, lets make absolutely certain that everything is working by creating, compiling, deploying, and accessing two servlets and one JSP.

Using what you learned in Java4308 , create compile and deploy the two servlets shown in Listing 1 and Listing 2 . Then create and deploy the JSP shown in Listing 3 .

Start your server and point your browser to http://localhost:8080/Inew2338_050 in order to see Figure 2 in your browser.

Figure 2 - Inew2338_050.java.

Missing Figure

Point your browser to http://localhost:8080/Inew2338_051 in order to see Figure 3 in your browser.

Figure 3 - Inew2338_051.java.

Missing Figure

Point your browser to http://localhost:8080/Inew2338_052.jsp in order to see Figure 4 in your browser.

Figure 4 - Inew2338_052.jsp.

Missing Figure

What's next?

If those tests were successful, your system is ready for you to move on to the next module and begin learning the programming details required to create Java servlets.

Miscellaneous

This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Java4530: Getting Started with Servlets
  • File: Java4530.htm
  • Published: 12/19/13
  • Revised: 06/02/16
Disclaimers:

Financial : Although the Connexions site makes it possible for you to download a PDF file for thismodule at no charge, and also makes it possible for you to purchase a pre-printed version of the PDF file, you should beaware 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 of the module.

In the past, unknown individuals have copied my modules from cnx.org, converted them to Kindle books, and placed them for sale on Amazon.com showing me as the author. Ineither receive compensation for those sales nor do I know who does receive compensation. If you purchase such a book, please beaware that it is a copy of a module that is freely available on cnx.org and that it was made and published without my prior knowledge.

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

Complete program listings

Listing 1 - Inew2338_050.java.
/*File Inew2338_050.java, Copyright 2004, R.G.BaldwinThe servlet produces the following text in the browser window in large red letters.Hello Big Red World ************************************************/import java.io.*; import javax.servlet.*;import javax.servlet.http.*; public class Inew2338_050 extends HttpServlet{public void doGet(HttpServletRequest req, HttpServletResponse res)throws ServletException, IOException{res.setContentType("text/html"); PrintWriter out = res.getWriter();out.println("<HTML>"); out.println("<HEAD><TITLE>Inew2338_050</TITLE></HEAD>"); out.println("<BODY>"); out.println("<h1 align=\"center\">" +"<font color=\"#FF0000\">"); out.println("Hello Big Red World");out.println("</font></h1>"); out.println("</BODY></HTML>"); }//end doGet()}//end class Inew2338_050
Listing 2 - Inew2338_051.java.
/*File Inew2338_051.java Copyright 2004, R.G.BaldwinThe servlet produces the following text in the browser window in large green letters.Hello Big Green World ************************************************/import java.io.*; import javax.servlet.*;import javax.servlet.http.*; public class Inew2338_051 extends HttpServlet{public void doGet(HttpServletRequest req, HttpServletResponse res)throws ServletException, IOException{res.setContentType("text/html"); PrintWriter out = res.getWriter();out.println("<HTML>"); out.println("<HEAD><TITLE>Inew2338_051</TITLE></HEAD>"); out.println("<BODY>"); out.println("<h1 align=\"center\">" +"<font color=\"#00FF00\">"); out.println("Hello Big Green World");out.println("</font></h1>"); out.println("</BODY></HTML>"); }//end doGet()}//end class Inew2338_051
Listing 3 - Inew2338_052.jsp.
<!--File Inew2338_052.jsp --><html><title>My title</title><body><H1>My JSP Page</H1><H2>Hello, JSP world!</H2><% for (int i=0; i<6; i++) { %><br><%= i %><% }//end for loop %><H3>Isn't this fun</H3></body></html>

-end-

Questions & Answers

how do you translate this in Algebraic Expressions
linda Reply
why surface tension is zero at critical temperature
Shanjida
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris Reply
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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