Reworked GroovyDirectoryServer into a proper class.

src/main/groovy/com/jdbernard/net/GroovyDirectoryServer.groovy

@@ -1,13 +1,12 @@
-#!/usr/bin/env groovy
-
 package com.jdbernard.net
 
 import org.eclipse.jetty.server.Server
 import org.eclipse.jetty.servlet.*
 import groovy.servlet.*
  
+ public class GroovyDirectoryServer {
 
-def startJetty(int port) {
+	public static void runJetty(int port) {
 		def server = new Server(port)
 	 
 		def handler = new ServletContextHandler(ServletContextHandler.SESSIONS)
@@ -25,9 +24,19 @@ def startJetty(int port) {
 		server.start()
 	}
 
+	public static void main(String[] args) {
+		def port = 9002
+		 
 		if (args.length < 1) { 
- 	println "Usage: webServer.groovy <port>"
+			port = 9002
+			println "Defaulting to port 9002" }
+
+		else try { port = args[0] as int }
+		catch(Exception e) {
+			println "Usage: GroovyDirectoryServer.grooy <port>"
 			System.exit(1) }
 
-println "Starting Jetty, press Ctrl-C to stop."
-startJetty(Integer.parseInt(args[0]))
+		println "Starting Jetty on port $port, press Ctrl-C to stop."
+		runJetty(port)
+	}
+}