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    <p>After a lot of trial and error, this is the best method I found for packaging the Scala app for distribution:</p> <p>First, create a Java class to be the main entry point for the application as described by <a href="http://garyboone.com/2009/06/creating-single-file-runnable-jars-in-scala-and-eclipse/?wscr=1680x1050" rel="noreferrer">Gary Boon</a>. This allows you to run the application from a JAR with the java command. I found that running a Scala class with the java command is problematic, even when you have the Scala libs on the source path:</p> <pre><code>import java.util.ArrayList; import scala.tools.nsc.MainGenericRunner; public class Main { public static void main (String[] args) { ArrayList&lt;String&gt; argList = new ArrayList&lt;String&gt;(); argList.add("fully.qualified.ClassName"); for (String s : args) { argList.add(s); } MainGenericRunner.main(argList.toArray(new String[0])); } } </code></pre> <p>Now you can use Eclipse's <em>Export Runnable JAR</em> command to package up all your classes and libraries into a JAR file. Set the JAR's main class to the Java entry point. You can also save the Eclipse-generated output settings as an ANT build file so you can make adjustments. Using ANT to create the JAR with a Java entry point yielded best results. You can also package up other JAR dependancies this way which makes it a whole lot simpler when trying to run the JAR on a different host. As a minimum you will need the Scala library and the Scala tools JAR.</p> <pre><code>&lt;zipfileset excludes="META-INF/*.SF" src="${scala.lib.jar}"/&gt; &lt;zipfileset excludes="META-INF/*.SF" src="${scala.tools.jar}"/&gt; </code></pre> <p>If you're using embedded Jetty, as I am, you can run the server as a Daemon process using the following command (<a href="http://www.jguru.com/faq/view.jsp?EID=472493" rel="noreferrer">source</a>):</p> <pre><code>nohup java -jar MyJettyServer.jar &lt; /dev/null &gt;&gt; server.log 2&gt;&gt; server_error.log &amp; </code></pre> <p>This runs the program as a background process which is independent of the current user session so the process will continue after you logout of the host.</p>
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