Where to put .class file of a servlet to run it on Tomcat 4.0

where do i put my .class file of my servlet or maybe the .java one too in order to run it using Tomcat 4.0
thanks in advance

i got it by accident a while ago.. hehe
thank you for trying to help thou :)
ivo

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Where to put class files

hi,
i use Tomcat v4.0.5, my jsp files import some classes. i put these classes to /classes folder under /jakarta-tomcat-4.0.5 base directory. but when i make some changes to these classes, i have to restart the Tomcat. i think there must be some other folders to put these class files and there wont be need any more to restart Tomcat.

Hi
It is necessary to restart your Tomcat if you are modifying class files, because tomcat will build a cache for the previously compiled classes and objects. As you are under development this is of no harm.
And one more thing place any classes in the WEB-INF/classes directory of your tomcat application.
Thanks
Swaraj

Problem creating package structure and where is my .class file??????

Working on Tomcat I have my folder structure like this...
webapps
->app_root
->WEB-INF
->classes
->src
-> .java files
->META_INF
In the command prompt i compile using this
c:\Program Files\Apache Tomcat 4.0\webapps\Murthy\WEB-INF\classes>javac -d src\*.java
and in my java files I have the package structure mentioned as
package com.acme;
after compiling i expected this to happen for me.
webapps
->app_root
->WEB-INF
->classes (in WEB-INF)
->com (in classes)
->acme (in com)
-> .class files (in acme)
->src (in WEB-INF)
-> .java files(In src)
->META_INF
The funiest part for me started he when i compiled the file
c:\Program Files\Apache Tomcat 4.0\webapps\Murthy\WEB-INF\classes>javac -d src\one.java
It compiled successfully without giving me any error but no package structure was created and THERE IS NO one.class file anywhere in my system.....Then how did it compile my file and where is the .class file.
I think am worng somewhere but unable to locate it.
Can somebody pull me out of thiss stuf??? Need to do it fast.
Thanx.

c:\Program Files\Apache Tomcat 4.0\webapps\Murthy\WEB-INF\classes>javac -d src\*.java
The command you posted does not have a source file specification. You are telling the compiler to put the .class files in src\*.java but you are not specifying any .java files. It looks like your command should be javac -d . src\*.java

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I have a .inf file that contains the location of a database and of my smtp server. I have some servlets that make calls to java classes that read this file in order to access a DB and send emails etc. Where should i put this file so that when i come to run my project on apache the servlets and java classes can see and use the inf file? Do i need to put it in the WEB-INF directory etc? Do i need to add anything to the Web.xml file etc?
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David

Thanks, ive set it up so it now uses a properties file which is placed in the same package as the class file on apache. But in order to read the file i need to put an absolute path in e.g.
Properties props = new Properties();
props.load(new FileInputStream("C:/apache-tomcat-6.0.10/webapps/ROOT/WEB-INF/classes/coreservlets/message.properties"));
however i want to use a relative path, somethin like:
props.load(new FileInputStream("/message.properties"));
but this does not seem to work, do i need to define a realtive path using different syntax or do i need to place the properties file in a different place or change some configuration settings in apache?
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Using normal class file in the servlet

Hello Friends;
Now my problem is ;
I generated a java file ;
import drasys.or.mp.*;
import drasys.or.mp.lp.*;
public class optimize
    public static void main(String[] args)
    try
        int r=1;
        int s=0;
.This file works perfect. It calls an API and there is no problem. But when I take this code into my servlet, then problem starts. First it says;
"java.lang.NoClassDefFoundError: drasys/or/mp/ScaleException"
but I know it is there. And I mounted the jar file.
Do you think there is a problem with my codes, because it works when it is outside of the servlet.
My servlet code is as follows;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.sql.*;
import java.util.*;
import java.net.*;
import drasys.or.mp.*;
import drasys.or.mp.lp.*;
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
         try
        int r=1;
        int s=0;
        int n = 3;
        int t,w,u,v,f;
        f = 1;
        int z=0;
        int y = 1;
        int l = 1;
        double [][][][] C = new double [1][1][n-1][n];
        double [][][][] D = new double [1][1][n-1][n];
        C[0][0][0][1]=2.5-0.92*r;
        C[0][0][0][2]=1.43-0.37*r;
        C[0][0][1][2]=1.14-0.48*r;
        D[0][0][0][1]=0.65*r+0.94;
        D[0][0][0][2]=0.31*r+0.75;
        D[0][0][1][2]=0.27*r+0.40;
     SizableProblemI prob = new Problem(n*(n-1)+1,n);
        prob.getMetadata().put("lp.isMaximize", "true");
        prob.newVariable("Lambda").setObjectiveCoefficient(1.0);
        for (t=0;t<=(n-1);t++)
            prob.newVariable("W"+t).setObjectiveCoefficient(0);
        final byte LTE = Constraint.LESS;
        final byte EQU = Constraint.EQUAL;
        for (v = 1;v <= n*(n-1);v++)
               prob.newConstraint("constr"+v).setType(LTE).setRightHandSide(y);
            prob.newConstraint("constr"+(n*(n-1)+1)).setType(EQU).setRightHandSide(1);
            // here, we are creating coefficients for lambda.
        for (u = 1; u <= n*(n-1); u++)
                prob.setCoefficientAt("constr"+u,"Lambda",y);
// here, we are creating coefficients for W�s.
        for(t = 0 ; t <= (n-2); t++)
            for (w = 1; w <= (n-1); w++)
                 if (t<w)
                     prob.setCoefficientAt("constr"+l, "W"+t, 1);
                     prob.setCoefficientAt("constr"+l,"W"+w, (-C[s][z][t][w]));
                     l = l + 1;
                     prob.setCoefficientAt("constr"+l, "W"+t, -1.0);
                     prob.setCoefficientAt("constr"+l, "W"+w, D[s][z][t][w]);
                     l = l + 1;
/* here , we are creating coefficients for the last formula which is w1+w2+w3+....Wn = 1 */
            for (f=0; f <= (n-1); f++)
            prob.setCoefficientAt("constr"+(n*(n-1)+1), "W"+f, 1);
/* API finds the solution below.*/
     LinearProgrammingI lp = new DenseSimplex(prob);
        double ans = lp.solve();
        System.out.println("Solution"+r+"="+ans);
        System.out.println(lp.getSolution());
        catch (drasys.or.mp.DuplicateException first)
         first.getMessage();
        catch (drasys.or.mp.NotFoundException second)
        catch (drasys.or.mp.InvalidException third)
        catch (drasys.or.mp.NoSolutionException fourth)
        catch (drasys.or.mp.UnboundedException fifth)
        catch (drasys.or.mp.InfeasibleException sixth)
        catch (drasys.or.mp.ConvergenceException seventh)
        catch (drasys.or.mp.ScaleException eigth)
           eigth.toString();


Thanks a lot for the reply.
Forgive me, I have no object oriented background,
even programming. I am just in the learning phase.This is a pretty advanced problem to tackle for your first programming task.
That's why it doesn't follow OO concepts. This part
will be connected to user input part, that I've
completed .Hmmm.
Successful programming depends on one idea: "divide and conquer". You take a big problem and solve it by dividing it into smaller chunks that you CAN handle. You get the solution you want by bringing the smaller chunks together.
In your case I'd recommend that you get the optimization code into a single object that you can test off-line, without Tomcat. It looks like you started to do that with your optimize class, but the mistake you made is to put so much code into the main() method. You can only call that on the command line. Better to encapsulate the rest of it into small methods that will let you instantiate an instance of optimize and call its methods. Once you have that working you can wrap it in a servlet if you want to use it in a Web app.
Separate how your optimizer gets its data from how it processes it. On a desktop app, it might be convenient to read input from a file on disk. A Web app might be better served by an XML stream.
Why I said "I know it is there" because it doesn't
give any other error message than that one, if it
couldn't see the jar file, wouldn't it give me lots
of error messages? Don't assume anything. It only needs one error, which is the one you get when it can't find a class. How many more do you need? The class loader couldn't find that class, so it printed the message and stopped.
"I mounted" the jar file means I'm using Netbeans, I
mounted it to that environment as suggested by
Netbeans, If you don't know Java or programming well, I'm guessing that you also don't know NetBeans. I'd recommend that you figure out how to make all this work without NetBeans before you add another complication to your life.
If you don't use NetBeans, all you have to do is add the JAR to your CLASSPATH using the -classpath option on javac.exe when you compile and java.exe when you execute.
Tomcat assumes that all the JAR files in your Web app's WEB-INF/lib are in the CLASSPATH. If you put it in there, Tomcat will find it.
you're right, I'm using Tomcat 5.0,
everything is working fine, user input servlets,
mysql connection etc. Only this part is causing the
problem now.If you've already got a Web app deployed and connected to MySQL, you're not doing too badly. Kudos to you - that's not too bad for someone who claims to be a programming novice.
I'll put that jar file into lib folder as you suggested thanks.I think that might be all you'll need. Try it and see.
Actually I saw an example it was using "throws
exception" , I couldn't figure out where to put it,
and I decided to get rid of the compiling errors just
putting bunch of catch statements.If you're saying that your code is throwing a lot of checked exceptions, and you added these extra catch blocks to get rid of them, another way to do it would be to simply have a single catch block, like this:
try
    // your code in here
catch (Exception e)
    e.printStackTrace();
}Polymorphism says that this catch block will handle all checked exceptions.
>
Looks like I don't know anything but I'm trying to
handle a big thing :))).Indeed you are. Anyone who can write a Web app and connect it to a relational database on their first try is hardly helpless. We're all ignorant, just about different things. Keep digging - you'll make this work.
But thank you soooo much for your detailed answer, and happy new year.
Shamil.And the same to you, Shamil. Good luck, and let me know how you make out.
%

Where to put jar files reachable for ejb:s?

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I have a ejb that use some jar files.
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Dear,
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[email protected]

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Depends on what call you're using in your extension function to
read your properties.Maybe I tried a too simplistic approach. I'm just using this:
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try {
props.load(new FileInputStream("/foo.properties"));
etc.
This (with the slash) works if the properties file is in the root
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If you read your properties as a resource using
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the properties file inside the JAR with the extension classes?
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--Jere

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I'm rather new to Java and have a slight problem. The thing is that I need to write an app that can read a text file in this format:
2
Orc
name = Gnorck
experience = 20
maxHealthPoints = 50
healthPoints = 30
maxBerserk = 9
berserk = 7
Human
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experience = 45
maxHealthPoints = 40
healthPoints = 30
maxGreed = 20
greed = 10
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Now the application has to be able to read the file. I've choosen to first just make a list of characters. A friend helped me with this code but I'm not completely sure if I know how it works. The code:
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package RPGApplicatie;
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I assume you have defined your Human and Orc classes to include fields name, experience, etc and a constructor that takes these values as parameters?
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int count = file.readInt();
// define variables for Karakter values (name, experience etc.)
for (int i = 0; i < count; i++)
String characterClass = file.readLine();
// read common character components
if (characterClass.equals("Human")
    // read human specific components
    karakters.add(new Human(...));
if (characterClass.equals("Orc")
    // create Orc
//...Cheers

Where to put props file

Hello,
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          regards,
          Farhat


I have a similar question - I'm not using Resource Bundles, but I want to be
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          >
          > "Muhammad Farhat Kaleem" <[email protected]> wrote in message
          > news:3a6fe9d7$[email protected]..
          > > Hello,
          > > when using a WAR application to deploy a servlet, which uses a
          > > ResourceBundle to read a properties file, where should the properties
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          > that
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          > >
          > > regards,
          > > --
          > > Farhat
          > >
          > >
          > >
          > >
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          >

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I found this: http://stackoverflow.com/questions/661110/how-do-i-include-class-files-in-my-project-in-eclipse-java
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Hello,
We are running the J2EE installation of ColdFusion, and I'm
wanting to find out, is there a place on the server where I can add
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Thanks.

lok2005 wrote:
> Hello,
>
> We are running the J2EE installation of ColdFusion, and
I'm wanting to find
> out, is there a place on the server where I can add
replace Jar files without
> restarting the JRun service?
>
> Thanks.
>
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and
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Matt Woodward
[email protected]
Adobe Community Expert - ColdFusion

Where to put the file?

Hi, I have been trying to sort my 'import' problem and no luck so far, so I'm going to try a different approach.
Right I have this in my code.
import EasyIn.*;
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At the moment in time Have the class 'EasyIn' in the same folder as this class but it is not seaming to work.
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Thanks this has worked, this is so strange because i have had to use the import function when I was using the University computers, must because of the way the hdd are arranged (servers etc)
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Where to put .class file of a servlet to run it on Tomcat 4.0

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