RE: java.lang.UnsupportedClassVersionError: Bad version number in.class file
RE: java.lang.UnsupportedClassVersionError: Bad version number in.class file
- Subject: RE: java.lang.UnsupportedClassVersionError: Bad version number in.class file
- From: "Kantala, Dmytro R." <email@hidden>
- Date: Mon, 14 Jun 2010 09:55:27 -0400
- Thread-topic: java.lang.UnsupportedClassVersionError: Bad version number in.class file
Title: RE: java.lang.UnsupportedClassVersionError: Bad version number in.class file
Were you able to resolve by switching compiler version?
I am running into the same problem. I have eclipse configured to compile for 1.5.
Build machine
Snow Leopard: 10.6.0
Eclipse: 3.4.2
Wolips: 3.4.5830
WO: 5.4.3
Server
Leopard: 10.5.8
WO: 5.4.3
Thanks,
DK
-----Original Message-----
From: webobjects-dev-bounces+dkantala=email@hidden on behalf of Jake Bearkley
Sent: Mon 6/14/2010 9:01 AM
To: Farrukh Ijaz
Cc: email@hidden
Subject: Re: java.lang.UnsupportedClassVersionError: Bad version number in.class file
Sorry,
user error, I was trying to start the wrong application!! doh!
I have been working on this too long and need sleep!
thanks for your patience
Bearko
On Mon, Jun 14, 2010 at 10:05 PM, Jake Bearkley <email@hidden> wrote:
> Thanks, but as I have said, I have changed the preference and I still get
> the error.
>
> What else can I do to eliminate the error?
>
> I use no java 1.6 code. The application is currently being developed on a
> Leopard environment with java 1.5 and I am trying to set up a new
> development machine.
>
> Thanks in Advance
> Bearko
>
>
> On Mon, Jun 14, 2010 at 9:43 PM, Farrukh Ijaz <
> email@hidden> wrote:
>
>> Thats fine! JDK 1.6 compiler can generate code compatible to JDK 1.5. The
>> message is for the target system. I've the same scenario where I have
>> applications in production running on PPC platform 1.5 but I've on my
>> Macbook 1.6.
>>
>> However you may find error if you're having code of 1.6 which is not
>> compatible to 1.5. In that case you need to change it with 1.5 compatible
>> code. But chances are very rare you get an error.
>>
>> Farrukh
>>
>> On 2010-06-14, at 3:01 PM, Jake Bearkley wrote:
>>
>> Hi All,
>>
>> I have done that :) but I still get the error
>>
>> when I select 1.5 as the compiler compliance level, a message appears at
>> the bottom
>> "When selecting 1.5 compliance, make sure to have a compatible JRE
>> installed and activated (currently 1.6)"
>>
>> but I can not install and activate 1.5 JRE because the directory is dimmed
>> when I try and add the JRE!!!
>>
>>
>> Cheers
>> Bearko
>>
>>
>>
>> On Mon, Jun 14, 2010 at 9:24 PM, Farrukh Ijaz <
>> email@hidden> wrote:
>>
>>> Eclipse > Preferences > Java > Compiler
>>>
>>> Set it to Java 1.5 before compiling.
>>>
>>> You can do the similar setup per project.
>>>
>>> Farrukh
>>>
>>> On 2010-06-14, at 2:51 PM, Jake Bearkley wrote:
>>>
>>> > HI All,
>>> >
>>> > I am trying to build an application on Snow Leopard with Java 1.6 and
>>> run on a Leopard server with Java 1.5
>>> >
>>> > Can someone give me guidance on how to do this.
>>> >
>>> > Java 1.5 is a symbolic link to 1.6 on the file system
>>> >
>>> > Within eclipse I have attempted to set the Workspace settings to use
>>> 1.5, to do this I also need to set the System JRE.
>>> >
>>> > I am unable to install JRE for 1.5, when I try to install it, I am
>>> unable to select the 1.5 directory as it is dimmed.
>>> >
>>> > can anyone enlighten me?
>>> >
>>> > Thanks in advance
>>> > Bearko
>>> >
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>>
>>
>
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