肝病的症状有哪些:java问题

大家帮我分析下,当我运行这个程序时,会出现下列问题,是什么原因呢?谢了哈
D:\Program Files\Xinox Software\JCreatorV3\MyProjects\MyProject>java MainFrameCl
ass
Exception in thread "main" java.lang.NoClassDefFoundError: MainFrameClass (wrong
name: hotel/MainFrameClass)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$100(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)