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  1. POEasiest way to merge a release into one JAR file
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    <p>Is there a tool or script which easily merges a bunch of <a href="http://en.wikipedia.org/wiki/JAR_%28file_format%29" rel="noreferrer">JAR</a> files into one JAR file? A bonus would be to easily set the main-file manifest and make it executable.</p> <p>The concrete case is a <a href="http://jrst.labs.libre-entreprise.org/en/user/functionality.html" rel="noreferrer">Java restructured text tool</a>. I would like to run it with something like:</p> <blockquote> <p>java -jar rst.jar</p> </blockquote> <p>As far as I can tell, it has no dependencies which indicates that it shouldn't be an easy single-file tool, but the downloaded ZIP file contains a lot of libraries.</p> <pre><code> 0 11-30-07 10:01 jrst-0.8.1/ 922 11-30-07 09:53 jrst-0.8.1/jrst.bat 898 11-30-07 09:53 jrst-0.8.1/jrst.sh 2675 11-30-07 09:42 jrst-0.8.1/readmeEN.txt 108821 11-30-07 09:59 jrst-0.8.1/jrst-0.8.1.jar 2675 11-30-07 09:42 jrst-0.8.1/readme.txt 0 11-30-07 10:01 jrst-0.8.1/lib/ 81508 11-30-07 09:49 jrst-0.8.1/lib/batik-util-1.6-1.jar 2450757 11-30-07 09:49 jrst-0.8.1/lib/icu4j-2.6.1.jar 559366 11-30-07 09:49 jrst-0.8.1/lib/commons-collections-3.1.jar 83613 11-30-07 09:49 jrst-0.8.1/lib/commons-io-1.3.1.jar 207723 11-30-07 09:49 jrst-0.8.1/lib/commons-lang-2.1.jar 52915 11-30-07 09:49 jrst-0.8.1/lib/commons-logging-1.1.jar 260172 11-30-07 09:49 jrst-0.8.1/lib/commons-primitives-1.0.jar 313898 11-30-07 09:49 jrst-0.8.1/lib/dom4j-1.6.1.jar 1994150 11-30-07 09:49 jrst-0.8.1/lib/fop-0.93-jdk15.jar 55147 11-30-07 09:49 jrst-0.8.1/lib/activation-1.0.2.jar 355030 11-30-07 09:49 jrst-0.8.1/lib/mail-1.3.3.jar 77977 11-30-07 09:49 jrst-0.8.1/lib/servlet-api-2.3.jar 226915 11-30-07 09:49 jrst-0.8.1/lib/jaxen-1.1.1.jar 153253 11-30-07 09:49 jrst-0.8.1/lib/jdom-1.0.jar 50789 11-30-07 09:49 jrst-0.8.1/lib/jewelcli-0.41.jar 324952 11-30-07 09:49 jrst-0.8.1/lib/looks-1.2.2.jar 121070 11-30-07 09:49 jrst-0.8.1/lib/junit-3.8.1.jar 358085 11-30-07 09:49 jrst-0.8.1/lib/log4j-1.2.12.jar 72150 11-30-07 09:49 jrst-0.8.1/lib/logkit-1.0.1.jar 342897 11-30-07 09:49 jrst-0.8.1/lib/lutinwidget-0.9.jar 2160934 11-30-07 09:49 jrst-0.8.1/lib/docbook-xsl-nwalsh-1.71.1.jar 301249 11-30-07 09:49 jrst-0.8.1/lib/xmlgraphics-commons-1.1.jar 68610 11-30-07 09:49 jrst-0.8.1/lib/sdoc-0.5.0-beta.jar 3149655 11-30-07 09:49 jrst-0.8.1/lib/xalan-2.6.0.jar 1010675 11-30-07 09:49 jrst-0.8.1/lib/xercesImpl-2.6.2.jar 194205 11-30-07 09:49 jrst-0.8.1/lib/xml-apis-1.3.02.jar 78440 11-30-07 09:49 jrst-0.8.1/lib/xmlParserAPIs-2.0.2.jar 86249 11-30-07 09:49 jrst-0.8.1/lib/xmlunit-1.1.jar 108874 11-30-07 09:49 jrst-0.8.1/lib/xom-1.0.jar 63966 11-30-07 09:49 jrst-0.8.1/lib/avalon-framework-4.1.3.jar 138228 11-30-07 09:49 jrst-0.8.1/lib/batik-gui-util-1.6-1.jar 216394 11-30-07 09:49 jrst-0.8.1/lib/l2fprod-common-0.1.jar 121689 11-30-07 09:49 jrst-0.8.1/lib/lutinutil-0.26.jar 76687 11-30-07 09:49 jrst-0.8.1/lib/batik-ext-1.6-1.jar 124724 11-30-07 09:49 jrst-0.8.1/lib/xmlParserAPIs-2.6.2.jar </code></pre> <p>As you can see, it is somewhat desirable to not need to do this manually.</p> <p>So far I've only tried AutoJar and ProGuard, both of which were fairly easy to get running. It appears that there's some issue with the constant pool in the JAR files.</p> <p>Apparently jrst is slightly broken, so I'll make a go of fixing it. The <a href="http://en.wikipedia.org/wiki/Apache_Maven" rel="noreferrer">Maven</a> <code>pom.xml</code> file was apparently broken too, so I'll have to fix that before fixing jrst ... I feel like a bug-magnet :-)</p> <hr> <p>Update: I never got around to fixing this application, but I checked out <a href="http://en.wikipedia.org/wiki/Eclipse_%28software%29" rel="noreferrer">Eclipse</a>'s "Runnable JAR export wizard" which is based on a fat JAR. I found this very easy to use for deploying my own code.</p> <p>Some of the other excellent suggestions might be better for builds in a non-Eclipse environment, oss probably should make a nice build using <a href="http://en.wikipedia.org/wiki/Apache_Ant" rel="noreferrer">Ant</a>. (Maven, so far has just given me pain, but others love it.)</p>
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