Experimental Physics and
Industrial Control System

"Chevtsov, Sergei" <[email protected]> · Fri, 2 Sep 2005 16:17:00 -0700

Hi, Christophe!

Claude is correct, and I apologize for not testing the new build under 1.4 :-(
Unfortunately, I have no access to SNS CVS right now, so I will be able to fix it only when I am back from my vacation next Wednesday.

To all:
Btw, how many people still use Java 1.4?

Sergei

-----Original Message-----
From: Claude Saunders [mailto:[email protected]]
Sent: Fri 9/2/2005 9:08 AM
To: Christophe Moins
Cc: [email protected]
Subject: Re: archive viewer installation problem

This looks very much like the xal.jar (and hence MessageCenter.class) 
was built with JDK1.5, whereas you are compiling and building with 
JDK1.4. I've used classes across the transition from JDK1.3 to JDK1.4 
before without a problem, but it looks like there are more 
incompatibilities between 1.4 and 1.5. It's nice that the compiler flags 
it, but the error message is a bit obtuse.

SNS builds XAL with JDK1.5 now, so you either have to move up to 1.5, or 
request a jar file built under 1.4. I'm not sure if they have coded in 
1.5 specific features, so that may or may not be possible.

   - Claude

Christophe Moins wrote:

> Hello,
>
> I am trying to install archive viewer but I have the following message 
> when I launch the ant command in  Archiveviewer's top directory :
>
> *********************************************************************************************************** 
>
> Buildfile: build.xml
>
> -create_build_dir:
>
> build_all:
>    [javac] Compiling 842 source files to /root/archiveviewer/build
>    [javac] 
> /root/archiveviewer/src/epics/archiveviewer/base/AVBase.java:25: 
> cannot access gov.sns.tools.messaging.MessageCenter
>    [javac] bad class file: 
> /root/archiveviewer/ext_jars/xal.jar(gov/sns/tools/messaging/MessageCenter.class) 
>
>    [javac] class file has wrong version 49.0, should be 48.0
>    [javac] Please remove or make sure it appears in the correct 
> subdirectory of the classpath.
>    [javac] import gov.sns.tools.messaging.MessageCenter;
>    [javac]                                ^
>    [javac] 1 error
>
> BUILD FAILED
> /root/archiveviewer/build.xml:21: Compile failed; see the compiler 
> error output for details.
>
> Total time: 18 seconds
> *********************************************************************************************************** 
>
>
>
> Does anybody what's going on ?
>
> Thanks
> Christophe
>

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System