Your application isn’t running because the required XFire jar files are missing. Unfortunately, neither Eclipse nor MyEclipse has the ability to export standard Java applications in a single JAR file and you need to do this manually.
What you can do is copy the required XFire jar files into a single folder and use use “java -classpath jar1.jar;jar2.jar;amazon.jar MainClass MyApplication”
There is an existing plugin which might help with the export: http://fjep.sourceforge.net/
Let us know how it goes or if you require further assistance.