Extracting japanese characters from pdf file using itext

I am trying to extract text from a pdf file that has japanese characters. I am using iText for this purpose However I am getting this exception.

Exception in thread "main" ExceptionConverter: com.开发者_开发技巧itextpdf.text.DocumentException: Font 'KozMinPro-Regular' with 'UniJIS-UCS2-H' is not recognized.

Can anybody help me with resolving this issue.