What n parameter is for?

Instead of learning complex polish grammar you can always order beer as fallow:
"Piwo X razy kurwa!". Where X is number of beers to order spelling always in nominative.

There is in description: 'Allowances may be made for adjustments to capital letters, punctuation, and word dividers.'
That impilcate that only numbers and case-insensitive letter are considered.

Each time after submitting my solution I receive: Unknown error
Run tests at least prints some errors: /tmp/java4463410058739788989/ThreadedCounting.java:7: error: cannot find symbol private final Counter counter;

IMO it is not problem with this concrete Kata setup, but with java on code wars in general.

I've solved that. Problem is with codewars not with this kata. This exception will apear when you delete "public" from class declaration.

After submitting solution I've got exception pointing to clojure invocation:

java.lang.NullPointerException at clojure.lang.Symbol.intern(Symbol.java:60) at clojure.core$symbol.invoke(core.clj:546) at codewars.util$class_name.invoke(util.clj:20) at codewars.util$write_code_BANG_.invoke(util.clj:41) at codewars.runners.java$fn__598.invoke(java.clj:69) at clojure.lang.MultiFn.invoke(MultiFn.java:227) at codewars.runners$run.invoke(runners.clj:22) at codewars.core$_main$fn__608.invoke(core.clj:30) at clojure.lang.AFn.call(AFn.java:18) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.lang.Thread.run(Thread.java:745)

You can always see what expr you are validating by adding System.out.println

I've had the same problem. Just restart kata and try again.

I have the same problem but with a global name 're':

Test Passed
Test Passed
Test Passed
Test Passed
Traceback: in in _sol NameError: global name 're' is not defined

It's good that you are not an Italian anymore.

Hey, i liked this kata so much that I prepared translation to Java :P.