JAVA based Barcodescanner app. for Mobile Phones

Hi, I want let develop a software for mobile phones for scanning a product with the mobile phone. I want a application for the mobile phone which can scan a bar-code (by taking a photo of the bar-code) and can search in the database for that item. If the item is found in the database the it needs to look for a specifie column in the database if the last column contains "A" the it will show a big OK sign like (√) on the phone Else if the column contains a "B" then it will show a big "cross" sign (stop sign) on the phone screen. if the last column contains a "C" then it will show a big question mark ("?") (it means questionable) on the phone screen. If the Item is not found then it will show "Ǿ" icon on phone screen. First of all application will be made for Java driven mobile phones, later Android, I PHONE and Windows will follow. The database will be delivered by me, and it is a part of the software. There must be update function for the Database from PC/internet. The mobile application will work in combination with a website. Website will contain about 50.000 items which are marked one by one with a “A”, ”B”, “C” in one of the columns in the database. If the scanned bar-code is not found in the database then the search will result in Not found Icon on the mobile screen ("Ǿ"). The Website will handle the back-end application. The database will be refreshed from time to time (1xmonth). The mobile users will also update their content from the website. So mobile phones don’t need to be connected 7x24 to the internet. Update of the software and database will be done by WIFI connection of the mobile to internet or it will be done by a USB connection of the mobile phone with PC and from there to the internet website database. For the database PHP/Mysql will be used for the updates. You can get more info if you want. See attachment for details.