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I've moved this thread to the IDE section.

Why are you trying to make this complicated structure before working out how to use classpaths and packages?
Start with a simple package and classpath, get it to work and then make it a bit more...

What is the full path to SimpleMoteFinder.class file?

The folder: motej should be in the folder at the end of the classpath.

If this it the path to the class file:
C:\code\JavaCode\motejdemos\src\main\java\motej\demos\common
then the classpath...

Where is the definition for the symbol located that the compiler can not find? If it is in a jar file, you need to add that jar file to the classpath for the compiler:
javac -cp...