Re: Unsupported major.minor version 49.0?

From: Ken Anderson (list..nderhome.com)
Date: Thu Jul 06 2006 - 16:14:22 EDT

  • Next message: Mike Schrag: "Re: Help! Totally hosed going with 3.2RC7"

    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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