Creating jar files as part of a test?

David Holmes david.holmes at
Tue Apr 1 05:34:17 UTC 2014

On 1/04/2014 3:23 AM, Jonathan Gibbons wrote:
> If you are going to use test.classes, then
> a) you probably want your test to be the only test in its containing
> directory -- otherwise you'll get the classes from other tests in your
> jar file
> b) you probably don't want to use library code (@library) because those
> classes will be stored somewhere else.

The test has to use @library because it is using processtools to launch 
another VM to run the "real" test via the jar file I am creating (and 
the fact it is a jar file is a critical part of the thing under test).

So I guess I'm going to have to run the jar tool passing the value of 
test.classes as the path to the actual classes I want in the jar, and 
list the actual classes individually.


> -- Jon
> On 03/30/2014 11:21 PM, Wang Weijun wrote:
>> They are in test.classes (system property) I guess.
>> If you are willing to create MANIFEST.MF yourself (or suppose it's not
>> necessary for you), it's also OK to open a ZipOutputStream, and
>> (putNextEntry, write)*.
>> --Max
>> On Mar 31, 2014, at 14:13, David Holmes <david.holmes at> wrote:
>>> On 31/03/2014 4:08 PM, Wang Weijun wrote:
>>>> test/java/util/jar/Manifest/ has:
>>>>      String [] args = new String [] { "cvfm", jarFileName,
>>>> ManifestName};
>>>> jartool =
>>>>              new, System.err, "jar");
>>> Thanks Max. I should have clarified that of course one option is to
>>> simply run the jar tool programmatically :) But in that case I don't
>>> know how to tell it where to find the files that jtreg has compiled -
>>> are they simply in the current working directory? (Guess I can find
>>> out readily enough :) ).
>>> Cheers,
>>> David
>>>> --Max
>>>> On Mar 31, 2014, at 13:59, David Holmes <david.holmes at>
>>>> wrote:
>>>>> I need to dynamically create a jar file containing some of the
>>>>> classes that form my test, and then use that jar file on a
>>>>> secondary exec of the VM (using ProcessTools). Given we aren't
>>>>> supposed to check-in binary files to the repos, what is the
>>>>> simplest way to generate a jar file using jtreg?
>>>>> Thanks,
>>>>> David

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