Create php script from java app

Hi. I have a cd catalog from my supplier based in java that allows me to check the stock status of a product on an individual basis. I did have another small app created that basically used the cd catalog code to run through all product codes automatically and return the result in a file. This takes some time and I have a slow internet connection, so I would like someone to decompile the app, work out how it works and rewrite the stock checking facility in php so that I can run it on a web server and have it update my magento based store with stock status. Thanks