Install libpdfbox2-java-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libpdfbox2-java-doc
PDF library for Java (documentation)
The Apache PDFBox library is an open source Java tool for working with PDF documents. This project allows creation of new PDF documents, manipulation of existing documents and the ability to extract content from documents. . This package contains the documentation for version 2 of the library.