A DESCRIPTION OF THE PROBLEM :
position of --enable-preview on command line seem to matter where it should not .
--enable-preview as the first argument results in java trying to load `--enable-preview` as a class.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
java —-enable-preview -classpath some.jar some.MyClass

reports "Error: Could not find or load main class —-enable-preview"

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
it should report error "Could not find or load main class some.MyClass"

which does happen if you do:
 java -classpath some.jar --enable-preview some.MyClass


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none needed, source does not matter.
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FREQUENCY : always