creating PDF in multiple languages

Hi
I need create PDF file which have multiple languages. I have a java string which contains multiple languages (like English , hindhi and kannada) . I am using Itext jars for converting PDF , But i am unable to get another languages in PDF file except English.Can Any one suggest me which should i use . Which tools are recommended to convert PDF which having multiple languages.

Thanks & Regards,
S.Manoj Kumar,
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