Running program.java

hi!
i try to execute *.java using the command line java *.class
usually i find this error
Exception in thread "main" java.lang.NoClassDefFoundError: workspace/freespace/os/class.
the compilation is done correctly(no error).
the class os exit and it is correctly specified
i 'am using eclipse3.2
java version "1.5.0_09"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_09-b03)
Java HotSpot(TM) Client VM (build 1.5.0_09-b03, mixed mode)
using the graphical interface of eclipse the execution is done correctly.
i need to execute it using the command line what can i do?
i need help
thanths a lot
some one help

That's not how you execute java programs.
You don't type java *.class
You type java ClassName where ClassName is the name
for your primary class (you know, the class that contains the "public static void main" method)

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