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Editorial Team
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Asked: 2026-06-05T04:28:04+00:00

I am using iText library to read PDF files. It’s working fine for all

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I am using iText library to read PDF files. It’s working fine for all the pdf files, except for password protected ones. I used some way by using the overloading constructor of PdfReader class

PdfReader reader = new PdfReader("locked pdf file","password".getBytes());

But it is showing show error like :

Exception in thread “main” java.lang.NoClassDefFoundError: org/bouncycastle/asn1/ASN1OctetString

Is there any other to read password protected pdf file? or should I include bouncy castle into my project library?

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1 Answer

  1. Editorial Team

    Starting from iText 2.0.0 you need the BouncyCastle jars. You need to download it from its site. More info can be found from here:

    java.lang.NoClassDefFoundError

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