Clojure Java Interop of Enum Normalizer.Form

Question

I'm having a heck of a time trying to figure out how to use the Java interop in Clojure to normalize Unicode. I've been trying to to use java.text.Normalizer, but I keep getting ClassNotFoundException when trying to call the enum Normalizer.Form.NFD. Essentially, I'm just trying to do something like this in Java:

java.text.Normalizer.normalize("Ἑλλάς", java.text.Normalizer.Form.NFD);

I've been trying to do something like this in Clojure, but to no avail:

(import java.text.Normalizer)
(java.text.Normalizer/normalize "Ἑλλάς" java.text.Normalizer.Form/NFD)

Normalizer/normalize seems to be found ok, but getting at Normalizer.Form.NFD seems to be the problem as I keep getting the error:

Caused by java.lang.ClassNotFoundException java.text.Normalizer.Form

I'm working on Windows using: Clojure 1.8.0 and Java HotSpot(TM) 64-Bit Server VM 1.8.0_112-b15

I went ahead and tested it in regular Java and it works fine. So the class is installed on the system. Can anyone show me what I'm doing wrong here? Am I calling it incorrectly? Is there something else I need to import perhaps? Any advice is greatly appreciated.

Community · Accepted Answer · 2017-05-23 11:45:43Z

5

This gives you trouble because Form is an inner class. In bytecode, a class outer.inner is actually represented as outer$inner. See more in this SO question, and this google group post.

(import java.text.Normalizer
        java.text.Normalizer$Form)
(java.text.Normalizer/normalize "Ἑλλάς" java.text.Normalizer$Form/NFD) ;; "Ἑλλάς"

edited May 23, 2017 at 11:45

CommunityBot

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answered Dec 19, 2016 at 2:35

Shlomi

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3 Comments

file13 Over a year ago

Thank you so much! Yes, this works exactly as needed. Unfortunately, I didn't think to search for "static inner java class" after banging my head against this. But in any case, thank you for the quick and clear response!

Shlomi Over a year ago

Glad I could help! if this answered your question, you should accept the answer :)

file13 Over a year ago

Done. Thank you again!

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