Manifesting Classpath Issues + Ant

Question

Having some problems with classpath and manifest file.
I'm using ant to build manifest in jar. The classpath seems to be set OK in the manifest.
I include an external jar(log4j) in my app jar, and it seems to go in the correct place in my app jar(lib directory).
The manifest file seems to be created OK, and is put in the MANIFEST-INF directory in app jar.
I can compile and build everything OK.
The main issue is that at runtime, it does not seem to pickup the log4j jar. I get a NoClassDefFoundError when trying to create a Logger class.
Any help would be appreciated. I will include relevant information below.
ant stuff          <jar jarfile="${dist}/lib/mosaixsegment8-${DSTAMP}.jar" basedir="${build}">
               <manifest>
                    <attribute name="Built-By" value="${user.name}"/>
                    <attribute name="Main-Class" value="com.company.TestClient"/>
                    <attribute name="Class-Path" value="lib/log4j-1.2.8.jar"/>
               </manifest>
          </jar>
Manifest File CreatedManifest-Version: 1.0
Ant-Version: Apache Ant 1.5.4
Created-By: 1.4.2_01-b06 (Sun Microsystems Inc.)
Built-By: user
Main-Class: com.company.TestClient
Class-Path: lib/log4j-1.2.8.jar
Code Snippitimport org.apache.log4j.Logger;
public class TestClient{
     public static void main (String argv [])
          // Get Logger
          org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger("name");
Error Message
[java] java.lang.NoClassDefFoundError: org/apache/log4j/Logger
[java] at com.company.TestClient.main(Unknown Source)
[java] Exception in thread "main"
[java] Java Result: 1

Answer 1

pkwooster,
If there are complex solutions then the problem must be complex and perhaps I did not understand the problem (it takes a few hits on my head for the problem domain to get cleared up :). Reason I say this is because my problem is not complex & neither is the solution.
What I have is this:
1. Manually created (I know ANT does this; but I didn't use ant; I used a sh script) the MF file with just the Class-Path defined.
Here is the MF entry from my standalone application (it is really a messaging application):
Class-Path: log4j-1.2.7.jar bta_notify-facade-client.jar bta_notify-ex
ception.jar bta_notify-vo.jar
2. IN my sh script I use the following command to create my jar:
jar cvfm $BTA_ADAPTER_JAR_OUT \
     meta-inf/adapter-manifest.mf \
     $BTA_ADAPTER_CLASSES/*.class \
     $BTA_EXCEPTION_CLASSES/*.class \
     $BTA_MESSAGE_CLASSES/*.class \
     $BTA_VO_CLASSES/*.class \
     $BTA_GRAIN_BEAN_CLASSES/*.class \
     -C $BTA_SRC_CONFIG_DIR log4j.xml \
     -C $LOG4J_DIR $LOG4J_JAR
(the BTA_EXCEPTION_CLASSES & BTA_VO_CLASSES are not the same as the jars mentioned in the mf classpath).
That is all that I did. The adapter.jar contains log4j.jar (without the path) & the mf (meta-inf/ as the path).
I did something very similar on a j2ee app that is deployed as an EAR file in weblogic. That is where I have ear containing jar1 which contains log4j, other jars & jar1's mf which lists these contained jars (log4j & others) in its classpath.
I presume my problem & the problem that is being solved by these other complex solutions are not the same.