Setting CLASSPATH wthin a runnable Jar

OK bear with me here, I'm not a total newbie.. really! I've built executable jars before, but with just the directories of raw classes inside.
Now, I want to package up some jars, and point the classpath at these.
So in my Ant build file I have
    <jar jarfile="CSVConverter.jar" basedir="." excludes="cvs CSVConverter.jar *.xml *.pdf *.xls *.bat">
       <manifest>
          <attribute name="Main-Class" value="CSVConverter"/>
          <attribute name="Class-Path" value=".;fclui.jar;dom4j.jar;fop.jar;avalon-framework-4.1.5.jar"/>
       </manifest>
    </jar>I added the "." to the claspath because it wasn't finding the Main Class. That seems wrong for a start!
But it also can't find classes in the specified jars which ARE in the jar file, Ant tells me it's adding them, and I've checked.
FYI, the error message is
Exception in thread "main" java.lang.NoClassDefFoundError: com/fcl/xmlutils/CSVXMLReader$CSVSourceAnd that is in fclui.jar which is in the main jar: CSVConverter.jar.
In case anyone is curious, it's a tool to use a SAX parser to create XML parse events from a CSV document, use XSL to massage the document into either the correct XML format for Excel (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnexcl2k2/html/odc_xmlss.asp), or FOP (http://xml.apache.org/fop/), and through fop to PDF. Basically the top line of the CSV is headers, subsequent lines are data, and out comes a very nicely formatted, and scaled report either Excel or PDF.

The Class-Path is used as a hint to browsers to so
they can down load additional JARs before they are
called.
This attribute is not use by java and the claspath
cannot be set this way.Sorry, but this is just plain wrong!
Please see http://java.sun.com/j2se/1.3/docs/guide/jar/jar.html#JAR%20Manifest
"Class-Path :
The value of this attribute specifies the relative URLs of the extensions or libraries that this application or extension needs. URLs are separated by one or more spaces. The application or extension class loader uses the value of this attribute to construct its internal search path."
Still, JARs in a JAR will not work, AFAIK ...

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I am using notepad editor. I am trying to instantiate a DbBean class inside the servlet's init() method.
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^
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location: class Controller
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Controller.java:14: cannot find symbol
symbol : class DbBean
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^
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C:\Program Files\Apache Software Foundation\Tomcat 5.0\webapps\ROOT\WEB-INF\classes>
this is my servlet
import java.sql.*;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import bean.DbBean;
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This below class can be put inside bean folder( (ie)sub dir of controller servlet)
package bean;
import java.sql.*;
import java.util.*;
import java.io.*;
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String dburl="";
String dbuser="";
String dbpass="";
public void setDburl(String url)
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public void setUserName(String uname)
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public void setPassward(String pwd)
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What to do to rectify this, please help me why this error coming,

hi,
Actually i did my ordinary package compilation example below, its run correctly, but after set classpath to %tomcat-home%\common\lib\servlet-api.jar(for same programs its not working) this kinds of error coming.
F:\shyam\test>javac first.java
F:\shyam\test>java first
main class
DB Set Correctly
F:\shyam\test>set classpath=C:\Program Files\Apache Software Foundation\Tomcat 5.0\common\lib\servlet-api.jar
F:\shyam\test>javac first.java
first.java:1: package bean does not exist
import bean.DbBean;
^
first.java:10: cannot find symbol
symbol : class DbBean
location: class first
DbBean dbbean = new DbBean();
^
first.java:10: cannot find symbol
symbol : class DbBean
location: class first
DbBean dbbean = new DbBean();
^
3 errors
F:\shyam\test>
In compilation it wont take DbBean class, please help me.
thanks in advance,
S.Shyam

Setting classpath to execute jar file.

I have dependency jar files to execute my jar file.
set classpath=./lib/tpc.jar;./lib/jxl.jar;
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java -jar ./lib/tpc.jar %1java -jar seems not taking classpath environment variables and showing error as
Exception in thread "main" java.lang.NoClassDefFoundError:
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baskark wrote:
I have dependency jar files to execute my jar file.
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at utility.tpc.generate.Tpc.generate(Unknown Source)
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Edited by: atmguy on Dec 14, 2009 8:42 AM

How to use jar files without setting classpath

Hi,
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Problems with CLASSPATH in a executable jar file

Hi there
I'm having a problem that I don't know how to solve. My generalq uestion is:
"Why isn't my CLASSPATH (java.class.path) forwarded into ar unnable class inside a jar file?"
The situation is:
I have made a runnable jar file containing an ant build.xml file, a jar file containing some patch files, and a class called AntLoader.class. AntLoader are the file that are executed (inserted into the manifest). This works. The class are executed, but it can't find the package needed for starting ant.
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Brgds
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've found the solution to the problem. You have to use the -Xbootclasspath/a parameter when running java.
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Brgds
Jakob

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Nive

in ur autoexec.bat file write the following
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Setting Classpath on windows platform

Hello
I was trying to set classpath of "D:\documentum\config" in my environment variable , i was doing it through command
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set classpath=D:\documentum\config;
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hello guys...i am having a problem with what should be a very simple operation...
the classes i define are stored in the classes directory..inside, each package has its own subdirectory...
classes
beans
User.class
Cart.class
i have tried to change my classpath to reflect this location and instruct the compiler as to where to find those classes..
i have used the set Classpath command...
SET CLASSPATH=.;C:\Tomcat\common\lib\servlet-api.jar;C:\Tomcat\common\lib\mysql-connector-java-3.1.13-bin.jar;
C:\Tomcat\webapps\theagent\WEB-INF\classes beans.User;
but when i try to import beans.User in another class..it doesnt compile and tells me that the package doesnt exist...
please help....what else do i need to check to make sure the configuration is as it should be...
p.c User.java started with package beans;
thanks

That is correct because your beans.User class doesn't contain a
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but it says that no such package exists...Then you have to be a bit more clear. You mentioned this command line:java -classpath C:\Tomcat\common\lib\servlet-api.jar;
C:\Tomcat\common\lib\mysql-connector-java-3.1.13-bin.jar;
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You're trying to run the 'beans.User' class which I presume is stored
in a subdirectory of that 'classes' directory.
The java command works like this:java -classpath <jars and dirs here> package.YourClass... so you were trying to run your beans.User class all by itself. It doesn't
contain a main method hence the runtime diagnostic. btw, I don't know
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kind regards,
Jos

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but the classpath only contains the last jar file of the directory, what is wrong with that line? A for loop on unix is no problem.
THX

Hi,
I had teh same need, but neither
FOR /R .\lib %%G IN (*.jar) DO set CLASSPATH=!CLASSPATH!;%%G
works for me nor
FOR /R .\lib %%G IN (*.jar) DO set CLASSPATH=%CLASSPATH%;%%G
I have set the "ENABLEDELAYEDEXPANSION" also
Regards

Setting CLASSPATH wthin a runnable Jar

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