has been approved

wanna know the answer

Not an issue.

Patched ;-)

Fixed. Thanks for reporting.

random tests added

Not an issue.

The import is still wrong in example test cases

Problem in Java translation.
Impossible to submit because of mistakes in tests:

Interpreter interpreter = new Interpreter();
^
symbol: class Interpreter
location: class InterpreterTest
/InterpreterTest.java:10: error: cannot find symbol

You are absolutely right! Unfortunately, only now I have enough time to make corrections regarding your commentaries. I will be pleased, if you check my updated kata.

Fixed the other one too :P

Fixed

I'm really sad that Codewars' restrictions prevent you, and possibly others, from actually completing this Kata. I should maybe raise this to the maintainers.