How to & what to install to compile & run servlet programs

Hi There,
I want to know what software is the best suited in Java, for installation, by which i can compile and run my servlet programs.
How to set the class path to run the servlet programs?
to what file should my class path link?

You can download and install Tomcat 3.2.x or 4.0 beta version.
To run your servlet classes just copy them to your server's webapps directory to access them. You'll find all necessary information on the website.
Here is the resource link:
1. http://jakarta.apache.org/tomcat/
Good Luck!
Eshwar Rao
Developer Technical Support
Sun microsystems inc
http://www.sun.com/developers/support

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I have installed jsdk1.4.2_13
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CATALINA_HOME==C:\Program Files\Tomcat\jakarta-tomcat-5.0.28
JAVA_HOME ==C:\j2sdk1.4.2_13
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But I am not able to compile servlet program
MY sevlet program is
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class HelloServlet extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String docType =
"<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0 " +
"Transitional//EN\">\n";
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"<HTML>\n" +
"<HEAD><TITLE>Hello</TITLE></HEAD>\n" +
"<BODY BGCOLOR=\"#FDF5E6\">\n" +
"<H1>Hello</H1>\n" +
"</BODY></HTML>");
ERRORS are:
Pakage javax.servlet does not exist
Pakage javax.servlet.http does not exist
cannot resolve symbol HttpServletRequest
and similar errors
can anyone guide me?
Message was edited by:
Learn

it's not CLASS_PATH, it's CLASSPATH.
Directory paths with spaces in them are problematic. Surround them with double quotes.
I think the best thing is not a CLASSPATH environment variable. Better to use the -classpath option on javac.exe when you compile.
So your command to compile might look something like:
javac -classpath .;"C:\Program Files\Tomcat\jakarta-tomcat-5.0.28\common\lib\servlet-api.jar" *.java%

Regading doubt in running servlet program

I am deploying servlet program in my tomcat webapps folder. i could not run the servlet program in my webapps folder. i put my serlvet class file in webapps folder strcture like this webapps/ROOT/WEB-INF/classes. then i mapped my serlvet file in web.xml. again i could not run the serlvet program. Give me any solution
thanks in advance
regards
N.Nagasundaram

To solve ur problem follow these steps:-
1)     go to my computer-properties- advanced tab-environment variables.
Then go for system variables and click new and write:
Variable name: CATALINA_HOME
Variable value: c:\Tomcat 4.1( i.e. specify ur tomcat root folder)
After writing click ok.
2)     again do same for setting
Variable name: JAVA_HOME
Variable value: c:\jdk1.4(specify ur jdk folder)
Variable name: PATH
Variable value:
C:\jdk1.4\bin;C:\jdk1.4\lib;C:\Tomcat 4.1\bin;
Variable name: CLASSPATH
Variable value: C:\jdk1.4\lib;C:\Program Files\Java\j2re1.4.0_02\lib;C:\Tomcat\*.jar;
3)     write ur serlet source file(helloworld.java)
4)     open dos promt & compile ur pgm:
c:\Tomcat 4.1\webapps\ur application name\src\servlet> javac helloworld.java
5)     put ur class file in c:\Tomcat 4.1\webapps\ur application name\web-inf\classes\ helloworld.class
6)     write ur web.xml-
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<servlet>
<servlet-name>Hello</servlet-name>
<servlet-class> helloworld </servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloWorld</servlet-name>
<url-pattern> \ ur application name\hello
</url-pattern>
</servlet-mapping>
</web-app>
7)     start ur tomcat click on startup batch file under c:\Tomcat 4.1\bin\startup.bat
8)     give url: http:\\ localhost:8080\ ur application name\hello
9)     u will find ur response.
10)     If u have problem in compiling ur java file then make a file on notepad and write:-
set path=�%path%�; C:\jdk1.4\bin;C:\jdk1.4\lib;C:\Tomcat 4.1\bin;
set classpath=�%classpath%�; C:\jdk1.4\lib;C:\Program Files\Java\j2re1.4.0_02\lib;C:\Tomcat\*.jar;
save this file as anyname.bat and save in :- c:\Tomcat 4.1\webapps\ur application name\src\servlet
after coming on this dir i.e. c:\Tomcat 4.1\webapps\ur application name\src\servlet
run ur bat flie and compile ur java file
if u have any problem pl. mail me on [email protected]

Installing and compiling/running javaservlets

After installing the JSDK package to run java servlets is there anything else you need to install? I keep getting the following errors when I try to compile my IsItWorking.java script:
www/servlets> javac IsItWorking.java
IsItWorking.java:57: package javax.servlet does not exist
import javax.servlet.*;
^
IsItWorking.java:58: package javax.servlet.http does not exist
import javax.servlet.http.*;
^
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symbol : class HttpServlet
location: class IsItWorking
public class IsItWorking extends HttpServlet {
^
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symbol : class HttpServletRequest
location: class IsItWorking
public void service (HttpServletRequest request, HttpServletResponse response)
^
IsItWorking.java:71: cannot resolve symbol
symbol : class HttpServletResponse
location: class IsItWorking
public void service (HttpServletRequest request, HttpServletResponse response)
^
IsItWorking.java:72: cannot resolve symbol
symbol : class ServletException
location: class IsItWorking
throws ServletException, IOException
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IsItWorking.java:81: cannot resolve symbol
symbol : method getServletConfig ()
location: class IsItWorking
String server = getServletConfig().getServletContext().getServerInfo();
^
7 errors

Hi
Sounds like you may also need to download the Enterprise JavaBeans Class Files.
http://java.sun.com/products/ejb/docs.html
I once had similar messages and solved it by installing EJB.
(I downloaded "2.0 - Final release" class files. It installed "J2EE.jar")
Regards
Supersaus

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