Re: [gentoo-user] ebuild help: java main class?

[Alan McKinnon <alan.mckinnon@gmail.com>]

On Saturday 24 October 2009 22:12:22 Grant wrote:
> I'm trying to fix up the JAlbum ebuild:
> 
> http://bugs.gentoo.org/show_bug.cgi?id=128356
> 
> and get it to use java-pkg-2.  Here's what I have so far:
> 
> inherit java-pkg-2 eutils
> 
> S="${WORKDIR}/Jalbum"
> DESCRIPTION="Web photo album generator"
> HOMEPAGE="http://jalbum.net/"
> SRC_URI="http://jalbum.net/download/Jalbum${PV}.zip"
> 
> LICENSE="as-is"
> SLOT="0"
> KEYWORDS="x86"
> IUSE=""
> 
> DEPEND=">=virtual/jre-1.5"
> RDEPEND="${DEPEND}"
> 
> src_install() {
>     java-pkg_dojar JAlbum.jar
>     java-pkg_dolauncher jalbum \
>         --jar JAlbum.jar \
>         --java_args -Xmx400M
> 
>     local dest=/usr/lib/${PN}
>     dodir ${dest}
>     cp -R ${S}/* ${D}/${dest} || die "Install failed"
> 
>     doicon ${FILESDIR}/Jalbum-icon.png
>     make_desktop_entry ${PN}
> }
> 
> It executes just fine, but I get:
> 
> $ jalbum
> Error: se.datadosen.jalbum.JAlbum
> java.lang.ClassNotFoundException: se.datadosen.jalbum.JAlbum
> 	at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
> 	at java.security.AccessController.doPrivileged(Native Method)
> 	at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
> 	at se.datadosen.jalbum.Main.main(Main.java:23)
> 
> I was told I need to define the main class with --main.  Does anyone
> know how to determine what the main class should be?


What's the line normally used to launch the app at runtime? That, together 
with CLASSPATH will tell you what class should be executed as main()
 

-- 
alan dot mckinnon at gmail dot com