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From esharris <eshar...@mac.com>
Subject Re: Using apache.commons.cli with Java 1.4.2
Date Mon, 15 Jun 2009 19:28:52 GMT



beeky wrote:
> 
> I'm jumping in sort of late on this, but here goes. 
> 
> To locate local config issues do the following.
> 
> Create a simple script, call it 'view_cpath.bat', to invoke your app and 
> output the classpath before the line that calls your app.
> 
> ------ begin script (windows batch file example):
> echo classpath=%classpath%
> java my.org.myapp %*
> -----  end script
> 
> invoke your app with view_cpath.bat ... normal arg list ...
> 
> With classpath in hand, check the following:
> 1. is the cli jar file explicitly named in the classpath?  *.jar will 
> not work.
> 2. is the jar file actually in the place where the classpath says it 
> should be?  Use dir or ls on classpath entries to be sure.
> 3. check for misspellings of the jar file name in classpath.  The 
> spelling is relative, obviously both classpath entry and actual jar file 
> must be spelled the same.  Commons jar files have lots of '-' and '.', 
> it is easy to get them wrong.  I've done it many, many times!
> 
> This will find the problem is it is just local configuration.
> 
> To make sure you are using the correct jar file do the following.
> use 'jar tvf  commons-cli-1.1.jar' (from the directory that contain the 
> jar file) to view the contents of the jar file.  In the output you 
> should see something like:
> 
> 423 Wed Jul 04 19:48:06 EDT 2007 
> org/apache/commons/cli/CommandLineParser.class
> 
> If you don't see this you have a bad/wrong jar file.  Try downloading
> again.
> 
> Hope this helps,
> -=beeky
> 
> 
> 
> esharris wrote:
>> This the only message:
>>
>> Exception in thread "main" java.lang.NoClassDefFoundError:
>> org/apache/commons/cli/CommandLineParser.
>>
>> I only have 1.4.2 java on my machine.
>>
>> Earl
>>
>> Emmanuel Bourg-3 wrote:
>>   
>>> esharris a écrit :
>>>
>>>     
>>>> IMHO, NoClassDefFoundError is hard to debug.
>>>>       
>>> Could you paste the full stack trace? Also, check that the code was 
>>> compiled with -target 1.4
>>>
>>> Emmanuel Bourg
>>>
>>>
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>>>
>>>
>>>     
>>
>>   
> 
> 
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> 
> 
> 

Initially, there was no CLASSPATH. I added the long name of the
commons-cli-1.2.jar to the class path. The execution of the bat file
displayed the expected class path. But this didn't solve the problem. I also
introduced a JAVA_HOME environment variable that has the path to the jdk.
-- 
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