pdfOCR
· pdfOCR is an iText 7 add-on for Java to recognize and extract text in scanned documents and images. It can also convert them into fully ISO-compliant PDF or PDF/A-3u files that are accessible, searchable, and suitable for archiving
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window pdfocr-root-3.0.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
