Can someone explain / elaborate for me the steps that happen when I bring a nokia 6313 NFC phone with an applet loaded on its secure element which has my credit card information close to a compliant contactless reader.

The situation that I am facing is one where I have to make one selection from many credit card applets deployed on my phone to share this information to the card reader in the vicinity. How does this happen? I would ideally want my MIDLet to provide me this feature of selecting a card and then exchanging it with the reader using NFC. Has someone dvelved deeper into this, please assist.