我是Java和Scala的新手。我已经创建了jar文件，并希望它在JVM上执行。我不知道这里有什么问题。请帮助我。请找到错误日志和命令
My-mini:~ DC$ export JVM_ARGS="-XX:+CMSClassUnloadingEnabled -XX:PermSize=512M - XX:MaxPermSize=1024M"
My-mini:~ DC$ java $JVM_ARGS -jar /Users/DC/Desktop/eclipse/Workspace/FTDataProject/target/scala-2.11/ftdataproject_2.11-1.0.jar MainApp.scala Germany 20140728
Exception in thread "main" java.lang.NoClassDefFoundError: scala/App
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637)
at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at com.DC.FTDataParser.MainApp.main(MainApp.scala)
Caused by: java.lang.ClassNotFoundException: scala.App
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 13 more