Compile correct but not run java programs

I have problem. Java program copile correctly but not run. I can't understand this one.
**this is the error**
Exception in thread "main" java.lang.NoClassDefFoundError: suminda
Caused by: java.lang.ClassNotFoundException: suminda
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)
Could not find the main class: suminda. Program will exit.

The error is telling you that the jvm could not find a class named suminda. Are you aware that class names are case sensitive? Suminda is not the same as suminda for example.
This error usually happens when you haven't specified the classpath correctly. A simple thing to try isjava -cp . sumindaHere's some links that may help.
[http://www.kevinboone.com/classpath.html]
[http://java.sun.com/javase/6/docs/technotes/tools/findingclasses.html]

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