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Date: Thu, 22 May 2008 18:02:15 +0100
From: "Peter Reilly" <peter.kitt.reilly@gmail.com>
To: "Ant Users List" <user@ant.apache.org>
Subject: Re: Class-Path not recognised from MANIFEST.MF
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On Thu, May 22, 2008 at 5:42 PM, Toomey, Kevin H (ATS, IT)
<Kevin.Toomey@thehartford.com> wrote:
> "What about a application which needs multiple jar files on its
> classpath, does all these files (dependencies) needs to be specified
> using the -classpath attribute on command line"
>
> Yes.
>
Not quite.
The Class-path attribute in a jar manifest is used to specific
relative or absolute files that
are to be added to the classpath when one uses java -jar. The
filenames are relative to the jar file.

so having Class-path: App1.jar
in the manifest of X.jar, and placing App1.jar and X.jar in /opt/testing/X
one can do java -jar  /opt/testing/X/X.jar, and App1.jar will be picked
up.

Peter

> Do a search on "executable jar file dependencies" and you'll come across
> many articles and forum entries relating to this. You are not the first
> who expected to be able to do what you are trying to do.
>
> Thanks,
> Kevin
>
> -----Original Message-----
> From: Ravi Roy [mailto:ravi.aroy@gmail.com]
> Sent: Thursday, May 22, 2008 12:04 PM
> To: Ant Users List
> Subject: Re: Class-Path not recognised from MANIFEST.MF
>
> Thanks Kevin and Dominique for your quick replies,
>
> Yes. Exception is for a class in the App1.jar which is needed by
> Application.jar (main application file). What about a application which
> needs multiple jar files on its classpath, does all these files
> (dependencies) needs to be specified using the -classpath attribute on
> command line .. There is no other way ?
>
> Dominique : App1.jar is included in root of Application.jar so it is
> physical file itself in the Application.jar ?
> Regards,
> Ravi
>
> On Thu, May 22, 2008 at 9:20 PM, Toomey, Kevin H (ATS, IT)
> <Kevin.Toomey@thehartford.com> wrote:
>> Hi Ravi,
>>
>> I'm assuming the exception is for a class in the App1.jar file.
>> That's because (unfortunately) jar files can't read jar files
>> contained within them. You need to place App1.jar on the file system
>> and include it in your command to your executable jar file.
>>
>> Ex. java -classpath App1.jar -jar Application.jar
>>
>> Thanks,
>> Kevin
>>
>> -----Original Message-----
>> From: Ravi Roy [mailto:ravi.aroy@gmail.com]
>> Sent: Thursday, May 22, 2008 11:29 AM
>> To: Ant Users List
>> Subject: Class-Path not recognised from MANIFEST.MF
>>
>> Hi All,
>>
>> My apologies if I am missing something obivious, I have the following
>> test build.xml, in which I am trying to create a executable JAR, I am
>> specifying the Class-Path which is needed by the application at
>> runtime but application reports NoClassDefFound error...
>>
>> Class-Path and Main-Class attribute are fine the Manifest.MF.. But
>> looked very strange that is come with NoClassDefFoundError..
>>
>> Does soembody knows the clue what is wrong ?
>>
>> Thanks in advance.
>>
>> Regards,
>> Ravi.
>>
>>
>> <project name="Test Executable application" default="main">
>>
>> <target name="main" depends="manifest.creation">  <jar
>> destfile="Application.jar" manifest="manifest.mf" update="false">
>>   <fileset dir="${basedir}">
>>     <include name="*com/**" />
>>     <include name="App1.jar" />
>>   </fileset>
>>  </jar>
>> </target>
>>
>> <target name="manifest.creation">
>>  <manifest file="MANIFEST.MF">
>>    <attribute name="Main-Class" value="com.maycompany.test.HelloMain"
>> />
>>    <attribute name="Class-Path" value="App1.jar" />  </manifest>
>> </target>
>>
>> </project>
>>
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