Obfuscate PDF Text under Rectangles

I require a Java command-line program that replaces the characters under rectangles in a PDF with the character “x” (smaller letter). The program should use either Apache PDFBox and/or Apache Tikka and be a modification to an existing java program that I already have (PDFObfuscation) that creates these rectangles in the PDF. Source code will be provided to the successful bidder. I have created a test data set of 10 PDFs. The test dataset can be found at: [login to view URL] example: java -jar [login to view URL] ./[login to view URL] 2 50 gray 95 Deliverables include the following: 1. Source code with documentation 2. Jar file