Need to create a QR code in Oracle

Question

I need to create a QR code in an oracle database and print them in a PDF document generated through BI Publisher.

I tried many places and found below a message that uses the Zxing library to generate a QR code in Oracle DB through the Zxing library: https://community.oracle.com/message/13360407#13360407

But the db I'm working on now has Java 1.5, but zxing requires 1.6 / 1.7

I asked the Zxing group if they have an older version that supports 1.5: https://groups.google.com/forum/#!forum/zxing

At the same time, I tried to find the qrcode generator, which is purely pl / sql and found below in GITHUB:
1. as_barcode by antonscheffer
and
2. make_qr by svetka17

But the pl / sql package also skips something and throws an error.

Do you know any idea how I can generate qr code in pl / sql or any Java 1.5 qr code library that I can use in Oracle Database?

Opensource will be useful and will not be interested in IDAutomation as its from my budget.

Thanks and respect,
Salman Farish.