Slashdev Support Forum

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1. Reza
   Member

   I upgraded my ant to version 1.8.1 from binary distribution and added javapp.jar (extracted from javapp-0.4.zip) under /lib directory. I installed jython using jython_installer-2.5.0.jar under my jdk1.5.0_05. I added the following lines to my build.xml:

   <?xml version="1.0" standalone="yes"?>

   <project name="Application" default="compile" basedir=".">

   ...
   <!-- to use javaPP -->
   <taskdef resource="javapp-defs.xml" />
   ...

   <target name="preprocess">
   <javapp destdir="staging" prefix="//#">
   <fileset dir="src" includes="**/*.java" />
   </javapp>
   </target>

   ...

   I typed ant preprocess and received the following error message:

   BUILD FAILED
   C:\Projects\R&D\Sole\Application\v1.0\System\build.xml:5: java.lang.UnsupportedC
   lassVersionError: Bad version number in .class file
   at java.lang.ClassLoader.defineClass1(Native Method)
   at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
   at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:12
   4)
   at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
   at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
   at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
   at java.security.AccessController.doPrivileged(Native Method)
   at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
   at org.apache.tools.ant.AntClassLoader.findBaseClass(AntClassLoader.java
   :1383)
   at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:106
   0)
   at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
   at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
   at java.lang.Class.forName0(Native Method)
   at java.lang.Class.forName(Class.java:242)
   at org.apache.tools.ant.taskdefs.Definer.addDefinition(Definer.java:594)

   at org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:239)
   at org.apache.tools.ant.taskdefs.Antlib.execute(Antlib.java:177)
   at org.apache.tools.ant.taskdefs.Definer.loadAntlib(Definer.java:443)
   at org.apache.tools.ant.taskdefs.Definer.execute(Definer.java:292)
   at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
   java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
   sorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:585)
   at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.jav
   a:106)
   at org.apache.tools.ant.Task.perform(Task.java:348)
   at org.apache.tools.ant.Target.execute(Target.java:390)
   at org.apache.tools.ant.helper.ProjectHelper2.parse(ProjectHelper2.java:
   179)
   at org.apache.tools.ant.ProjectHelper.configureProject(ProjectHelper.jav
   a:82)
   at org.apache.tools.ant.Main.runBuild(Main.java:786)
   at org.apache.tools.ant.Main.startAnt(Main.java:218)
   at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
   at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)

   Total time: 0 seconds

   Any idea?

   Thanks,
   Reza.

   Posted 1 year ago #

2. jiggak
   Key Master

   You don't need to install jython (it's bundled into javapp.jar) but it also "shouldn't" hurt if it is installed.

   I might have compiled javapp with JDK 1.6 (I don't remember). Is it possible for you to upgrade the java 1.6 and try again? If not, let me know. I should be able to recompile javapp against java 1.5.

   Posted 1 year ago #

3. Reza
   Member

   JDK 1.6 works.

   A minor thing I noticed (that maybe you are already aware of):

   //#if ${USEROBJ_ASM_ELEMENT_SIZE} == 4
   System.err.println("4 ");
   //#else
   System.err.println("no 4 ");
   //#endif

   is good.

   //#if ${USEROBJ_ASM_ELEMENT_SIZE} == 4 /* test */
   System.err.println("4 ");
   //#else
   System.err.println("no 4 ");
   //#endif

   gives this error:

   C:\Projects\Application\v1.0\System>ant preprocess
   Buildfile: C:\Projects\Application\v1.0\System\build.xml

   preprocess:

   BUILD FAILED
   C:\Projects\Application\v1.0\System\build.xml:95: 'CUserobj.java',
   line 685, char 44: Token not recognised in state 'ifcond'

   Total time: 2 seconds
   C:\Projects\Application\v1.0\System>

   Posted 1 year ago #

4. jiggak
   Key Master

   Good to hear you got it working.

   Currently there isn't any sort of support for comments in the pre-processor grammar or expressions.

   Posted 1 year ago #

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