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From <Jan.Mate...@rzf.fin-nrw.de>
Subject AW: jdk version for compiling. SOS
Date Mon, 05 Jan 2009 07:36:28 GMT
We had the same problem at work. source|target=1.4 produces the 1.4 bytecode, but maybe having
newer classes on the compile classpath produces "wrong" class content (right format but wrong
content).

I think the best solution is having an old JDK on the machine and refering to that with
  <javac executable="..." fork="true">


Jan


> -----Urspr√ľngliche Nachricht-----
> Von: Koxkorrita [mailto:koxkorrita@laudio.info] 
> Gesendet: Freitag, 26. Dezember 2008 20:12
> An: 'Ant Users List'
> Betreff: RE: jdk version for compiling. SOS
> 
> i have made it and appears the same error:
> 2008-12-26 20:11:12,532
> [ContainerBackgroundProcessor[StandardEngine[Catalina]]] INFO
> org.apache.catalina.core.StandardHostDeployer - Installing 
> web application
> at context path /Goikogane from URL
> file:/srv/www/tomcat5/base/webapps/Goikogane
> 2008-12-26 20:11:12,594
> [ContainerBackgroundProcessor[StandardEngine[Catalina]]] ERROR
> org.apache.catalina.startup.HostConfig - Exception while expanding web
> application archive Goikogane.war
> java.lang.UnsupportedClassVersionError:
> com/goikogane/servlets/GOIKOInitServlet (Unsupported 
> major.minor version
> 50.0)
>         at java.lang.ClassLoader.defineClass0(Native Method)
>         at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
>         at
> java.security.SecureClassLoader.defineClass(SecureClassLoader.
> java:123)
>         at
> org.apache.catalina.loader.WebappClassLoader.findClassInternal
> (WebappClassLo
> ader.java:1634)
> 
> -----Mensaje original-----
> De: Peter Reilly [mailto:peter.kitt.reilly@gmail.com] 
> Enviado el: viernes, 26 de diciembre de 2008 19:50
> Para: Ant Users List
> Asunto: Re: jdk version for compiling. SOS
> 
> You need to set target="1.4" as well as source="1.4".
> 
> Peter
> 
> On Fri, Dec 26, 2008 at 4:46 PM, Koxkorrita 
> <koxkorrita@laudio.info> wrote:
> > hello
> >
> >
> >
> > In my pc i have installed the 1.6_10 jdk.
> >
> > i must to compile, for generate one war for one 5.0 tomcat 
> that runs into
> > one 1.4 jdk, my classes.
> >
> > for this pourpose i make this into one build.xml file:
> >
> > <javac destdir="${entornoBase}/${classes}"
> > includes="**/${path}/${filej}.*,**/${filej}.*"
> > excludes="**/*EJB/*.*,**/**ejb/**/*.*" classpath="${classpath}"
> > optimize="on" deprecation="on" source="1.4" target="1.6">
> >
> >                  <src path="${entornoBase}/${fuentes}"/>
> >
> > </javac>
> >
> >
> >
> > but using the options:
> >
> > optimize="on" deprecation="on" source="1.4" target="1.6">
> >
> >  always appears into my tomcat this:
> >
> > 2008-12-26 17:42:07,483
> > [ContainerBackgroundProcessor[StandardEngine[Catalina]]] ERROR
> > org.apache.catalina.startup.HostConfig - Exception while 
> expanding web
> > application archive Goikogane.war
> >
> > java.lang.UnsupportedClassVersionError:
> > com/goikogane/servlets/GOIKOInitServlet (Unsupported 
> major.minor version
> > 50.0)
> >
> >        at java.lang.ClassLoader.defineClass0(Native Method)
> >
> >        at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
> >
> >        at
> > 
> java.security.SecureClassLoader.defineClass(SecureClassLoader.
> java:123)
> >
> >        at
> >
> org.apache.catalina.loader.WebappClassLoader.findClassInternal
> (WebappClassLo
> > ader.java:1634)
> >
> >
> >
> > can you help me for compiling the classes for make it 
> compatible with the
> > 1.4 jdk?
> >
> >
> >
> > thanks
> >
> >
> 
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