How to use Opencv ximgproc classes in Java

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for further, similar problems, here's some sort of checklist:

1. are the java/python wrappers enabled for this module ? you would look at the resp. CmakeLists.txt

   (well, in this case, only python. you'd add "java" to the end of the list, like: ... WRAP python java)

2. are the functions you try to use exposed to scripting ? (does it have a proper CV_EXPORTS_W in front of it, like here ? ) if not, you probably cannot use it at all (because there were some previous problems, wrapping it)

3. are there any known issues ? if you cannot find any, you might be the 1st person ever, trying this ;(

then, follow build instructions here

(and no, we can't help you with javacv, which is entirely off-topic here (and you probably shouldn't use it))