Integrate Java App into Drupal Site and PDF

I need someone familiar with both Java and Drupal for an integration project. I need to finish a Drupal e-commerce site running Ubercart. The plan is to create a self serve site for clients who want to sell tickets to their events thru my site. I need to connect an existing java seating chart program to the Ubercart. My clients will access the graphics program through their account on my site to set up a seating chart. Patrons access the resulting chart to select their seats. The selection must then connect to Ubercart. Basically, the graphical seating chart replaces the normal product selection feature on Ubercart. Then I need to create and issue to the end-user a PDF ticket with barcode and all their event and seating information which they can download upon payment. Ubercart already supports paid file downloads, the difference is that this pdf will have to be created ‘on the fly’ based on the specific buyer and event. Finally, I need the sales and marketing information gathered from end users pulled out of the MySQL database and available in a report form for both myself and my clients. To the extent that any of this is unclear or you need more information to offer an intelligent quote, feel free to ask. The same is also true if you think I have failed to recognize some additional work or steps that need to be taken in order to realize this project. Further, if because of expertise or specialization this project should be split between two or more people, i.e,. one for the java and another for the pdf, let me know that, too. I am ok with that. This is a work made for hire under US law. I will own all rights to the code.