For those that want to directly execute a .class file in a command prompt window. Here is a way:
Create the following batch file.
Use the Windows Explorer Tools to add a commandline for the .class file:
C:\BatchFiles\ExecClass.bat "%1"
Give it a name like: Execute class file
The batch file ExecuteClass.bat:
REM Execute a java class file - need to strip extension
echo filename is %~n1
java %~n1
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