I have a project that I've developed in Netbeans. It works wonderful in Netbeans. I can run and build a jar out of it without problems but when I try to do this manually with javac and jar I get this: Exception in thread "main" java.lang.NoClassDefFoundError: classes/projectname/packageX/Classname (wrong name: projectname/packageX/Classname)y What have I done wrong? This is what I've tried (src ...