Re: Unsupported major.minor version 49.0?

From: Pierre Frisch (pierre.frisc..pearway.com)
Date: Thu Jul 06 2006 - 17:15:17 EDT

  • Next message: Mike Schrag: "Re: Unsupported major.minor version 49.0?"

    Is there an easy way to test this? i.e. is there a way of checking
    the ClassVersion of a build jar?

    Pierre

    On 6-Jul-06, at 1:14 PM, Ken Anderson wrote:

    > Mike,
    >
    > Considering my recent post - I think that is likely. I do not have
    > 1.5 on my machine at all...
    >
    > Ken
    >
    > On Jul 6, 2006, at 1:04 PM, Mike Schrag wrote:
    >
    >> So if you're seeing a ClassVersionError launching inside Eclipse,
    >> then there's a 99% chance that you are building your app with 1.5,
    >> but your launch configuration is using a 1.4 VM to run it with.
    >> If you're seeing it in deployment, then there's a 99% chance that
    >> you built with 1.5 but your deployment environment either 1)
    >> doesn't have 1.5, 2) has 1.5 but it isn't the default, 3) you
    >> explicitly run it with 1.4 in your launch script.
    >>
    >> When you mention that you can't even build wolips -- Can you give
    >> some more info? What actually is failing (including the name of
    >> the class it tried to load that gave you the ClassVersionError).
    >> There are a couple prebuilt jars inside of wolips, so it's
    >> possible one of those accidentally got built with 1.5 along the
    >> way (for instance, I recently upgraded cayenne to support
    >> EOModeler plugin).
    >>
    >> ms
    >>
    >> On Jul 6, 2006, at 12:27 PM, Pierre Frisch wrote:
    >>
    >>> I am a bit mystified. I installed eclipse 3.2 release with the
    >>> latest WOLips and I am running Java 1.5 as the default jvm and I
    >>> still see the errors. I cannot even build wolips which I could
    >>> with eclipse 3.2RC7 and wolips 149 and jvm 1.5.
    >>>
    >>> Pierre
    >>>
    >>> On 6-Jul-06, at 7:57 AM, Mike Schrag wrote:
    >>>
    >>>> You're correct -- I misinterpreted what he was seeing ... One
    >>>> less thing I need to do, that's nice :)
    >>>>
    >>>> ms
    >>>>
    >>>> On Jul 6, 2006, at 5:36 AM, Ulrich Köster wrote:
    >>>>
    >>>>> I thought mike is talking about "our" buildserver where we
    >>>>> build the releases of woproject and wolips. woproject and
    >>>>> wolips are build with ant for java 1.4.
    >>>>>
    >>>>> Mike has to do nothing because the buildscripts are fine. For
    >>>>> instance Mike added some stuff lately that was 1.5 only. We
    >>>>> recognized that immediately because the build failed.
    >>>>>
    >>>>> Marc has to adjust his build to make sure that it builds for 1.4.
    >>>>>
    >>>>> Please correct me if I'm wrong.
    >>>>>
    >>>>> Uli
    >>>>> Am 06.07.2006 um 10:44 schrieb Anjo Krank:
    >>>>>
    >>>>>> This is not a solution for those that want to build on a
    >>>>>> machine where 1.4 is the default, and as long as WO isn't
    >>>>>> qualified for 1.5, there will be quite a few of those...
    >>>>>>
    >>>>>> Cheers, Anjo
    >>>>>>
    >>>>>> Am 06.07.2006 um 10:40 schrieb Ulrich Köster:
    >>>>>>
    >>>>>>> Moin Mike,
    >>>>>>>
    >>>>>>> no need to change anything on the buildserver. Marc switched
    >>>>>>> to 1.5.
    >>>>>>>
    >>>>>>> Uli
    >>>>>>> Am 06.07.2006 um 03:49 schrieb Mike Schrag:
    >>>>>>>
    >>>>>>>> The build server probably got updated to Java 1.5 which
    >>>>>>>> would have changed the default VM mapping ... WOLips should
    >>>>>>>> be 1.4 compliant for everything. I'll have to take a look
    >>>>>>>> at it tomorrow morning and set the VM to 1.4 explicitly.
    >>>>>>>>
    >>>>>>>> ms
    >>>>>>>>
    >>>>>>>> On Jul 5, 2006, at 9:00 PM, Marc Respass wrote:
    >>>>>>>>
    >>>>>>>>> FWIW, I still have woproject from 2.0.0.115 and that works.
    >>>>>>>>> I would like to know if there's a Java 5 requirement and,
    >>>>>>>>> if so, is it ok to stick with 2.0.0.115 or is there a later
    >>>>>>>>> version that runs in Java 1.4 that I should get?
    >>>>>>>>>
    >>>>>>>>> Thanks a lot
    >>>>>>>>> Marc
    >>>>>>>>>
    >>>>>>>>> On Jul 5, 2006, at 8:55 PM, Marc Respass wrote:
    >>>>>>>>>
    >>>>>>>>>> Hi all,
    >>>>>>>>>>
    >>>>>>>>>> Is there some Java 5 requirement going on? My server is
    >>>>>>>>>> running Mac OS X 10.4.x and Java 1.4.2_09. I copied up the
    >>>>>>>>>> latest woproject.jar and now when I compile I get the
    >>>>>>>>>> following error
    >>>>>>>>>>
    >>>>>>>>>> java.lang.UnsupportedClassVersionError: gov/maine/oit/
    >>>>>>>>>> mfasis/wo/Application (Unsupported major.minor version 49.0)
    >>>>>>>>>>
    >>>>>>>>>> I modified ant to use Java 5 and it compiled fine but now
    >>>>>>>>>> my app does run (same error) because I'm using Java 1.4
    >>>>>>>>>>
    >>>>>>>>>> Since WebObjects does no support Java 5, I am sticking
    >>>>>>>>>> with 1.4 for deployment. My workstation runs Java 5 but
    >>>>>>>>>> Eclipse compiles using 1.4.
    >>>>>>>>>>
    >>>>>>>>>> Marc
    >>>>>>>>>
    >>>>>>>>
    >>>>>>>
    >>>>>>
    >>>>>
    >>>>
    >>>>
    >>>
    >>
    >
    >



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