On Saturday 24 October 2009 22:32:18 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() > > There is a file called startjalbum.sh which is supposed to be used to > start the program. It contains: > > #!/bin/sh > java -Xmx400M -jar JAlbum.jar > > Does that tell you anything?
Yes, it does. There's a file called JAlbum.jar which contains the app, and it's location is visible to the script. There's no path so I'm assuming the file is in the current directory. A .jar is just a special kind of zip file (much like OOo files are). What's inside it? p.s. I don't know how familiar you are with Java's start-up process and how it finds things and how you specify things to find. It's somewhat unusual and many traps exist for the unwary :-) -- alan dot mckinnon at gmail dot com
