Could not final class "panel class" on installer launch

Sorry, forgot to add, that when I do compilation the same way with IzPack 4.3.3, it works perfectly.

Hi Anthonin,

Sounds like a path / class resolving issue, don't you think so?

Cheers

I get this also, and I'm using artifacts built from a git of HEAD (5.0.0-beta7-SNAPSHOT) on Linux x86_64.

As stated before, I'm having a similar problem, though in a Maven project, and I've spent some time looking for this issue (and in the process, familiarizing myself with the code). I am attaching a small patch that makes the izpack maven plugin test suite produce an installer jar that doesn't work and produces what I believe is the same error. It's a strange one. If the output (and by extension Info.installerBase) is not set so the filename starts with "izpack", it fails. I'm not positive that is must be "izpack", because I can't find the exact code...originally I thought this issue was this line from Packager.java (replaceAll is regex which means that "." causes matches on ".jar", "ajar", "1jar", etc.:

public void createInstaller() throws Exception
{
   // preliminary work
   info.setInstallerBase(compilerData.getOutput().replaceAll(".jar", ""));
...

which should probably be

public void createInstaller() throws Exception
{
   // preliminary work
   info.setInstallerBase(compilerData.getOutput().replaceAll("\\.jar", ""));
...

but no dice. If I find anything else, I'll post it.

The example now works.
There was some problems with the jar generation which caused problems to the panel detection. Should be ok now.

I'm using the izpack-maven-plugin 5.0.0-beta7 and I still have the problem.

Here the output of the Maven Plugin

[INFO] — izpack-maven-plugin:5.0.0-beta7:izpack (default) @ xxxx —
<?xml version="1.0" encoding="UTF-8"?><installation version="1.0">

<info>
<appname>TestInstaller</appname>
<appversion>1</appversion>
<uninstaller write="no"/>
<javaversion>1.6</javaversion>
</info>

<variables>
<variable name="InstallerFrame.logfilePath" value="$INSTALL_PATH/install.log"/>
</variables>

<guiprefs resizable="no" width="480" height="360">
<laf name="looks">
<param name="variant" value="windows"/>
<os family="windows"/>
</laf>
</guiprefs>

<locale>
<langpack iso3="eng"/>
</locale>

<panels>
<panel classname="TargetPanel"/>
<panel classname="InstallPanel"/>
<panel classname="SimpleFinishPanel"/>
</panels>

<packs>
<pack name="core" required="yes">
<description>MCCore2 packages</description>
<fileset dir="app" targetdir="$

/webapp" override="true"/>
</pack>

</packs>

</installation>
Setting the installer information
Setting the GUI preferences
Adding langpack: eng
Adding resource: flag.eng
Adding panel: UNKNOWN (TargetPanel) :: Classname : TargetPanel
Adding panel: UNKNOWN (InstallPanel) :: Classname : InstallPanel
Adding panel: UNKNOWN (SimpleFinishPanel) :: Classname : SimpleFinishPanel
[ Begin ]

Copying the skeleton installer
Copying 2 files into installer
Merging 0 jars into installer
Writing 2 Packs into installer
Writing Pack 0: core
Writing Pack 1: web

[ End ]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS

Here the Exception when I execute the installer:

java -jar installer.jar

Exception in thread "AWT-EventQueue-0" com.izforge.izpack.api.exception.IzPackException: com.izforge.izpack.api.exception.MergeException: Could not find class TargetPanel : Current classpath is
at com.izforge.izpack.installer.bootstrap.InstallerGui$1.run(InstallerGui.java:57)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)
Caused by: com.izforge.izpack.api.exception.MergeException: Could not find class TargetPanel : Current classpath is
at com.izforge.izpack.merge.resolve.ClassPathCrawler.searchClassInClassPath(ClassPathCrawler.java:125)
at com.izforge.izpack.installer.manager.PanelManager.loadPanelsInContainer(PanelManager.java:72)
at com.izforge.izpack.installer.base.InstallerController.preloadInstaller(InstallerController.java:30)
at com.izforge.izpack.installer.bootstrap.InstallerGui$1.run(InstallerGui.java:50)
... 8 more

jar -tvf installer.jar|grep TargetPanel

2373 Fri Apr 29 09:51:02 CEST 2011 com/izforge/izpack/panels/target/TargetPanel.class
2148 Fri Apr 29 09:51:02 CEST 2011 com/izforge/izpack/panels/target/TargetPanelAutomationHelper.class
3553 Fri Apr 29 09:51:02 CEST 2011 com/izforge/izpack/panels/target/TargetPanelConsoleHelper.class

I am also seeing this with the released 5.0.0-beta7 maven plugin

It's not fixed as of the released 5.0.0-beta7

reopen please ...