运行scala应用程序与java -jar

我有一些问题的java。一探究竟。

sebastian @ sebastian-desktop：〜/ scaaaaaaaaala $ java -cp /home/sebastian/.m2/repository/org/scala-lang/scala-library/2.8.0.RC3/scala-library-2.8.0.RC3.jar ：target / scaaaaaaaaala-1.0.jar scaaalaaa.App

Hello World!

这很酷，对，但是怎么回事这：

sebastian @ sebastian-desktop：〜/ scaaaaaaaaala $ java -cp /home/sebastian/.m2/repository/org/scala-lang/scala-library/2.8.0.RC3/scala-library-2.8.0.RC3.jar -jar target / scaaaaaaaaala-1.0.jar

Exception in thread "main" java.lang.NoClassDefFoundError: scala/Application
 at java.lang.ClassLoader.defineClass1(Native Method)
 at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
 at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
 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$1.run(URLClassLoader.java:197)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
 at scaaalaaa.App.main(App.scala)
Caused by: java.lang.ClassNotFoundException: scala.Application
 at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
 at java.security.AccessController.doPrivileged(Native Method)
 at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
 at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
 ... 13 more

Wat the heck？任何想法为什么第一个工作，而不是第二？我怎么样 – 我的scala？

我先感谢，兄弟。

解决方法

如果您定义-jar，则忽略-classpath：

Java manual:

-jar When you use this option,the JAR file is the source of all user
classes,and other user class path
settings are ignored.

您可以在Manifest metadata中定义类路径依赖关系。

启动应用程序的最简单方法是使用scala脚本：

scala -classpath target/scaaaaaaaaala-1.0.jar scaaalaaa.App Hello World!