Does anyone have experience with some simple java applications for use on a cell phone? The phone is a Samsung m510, but I think the java runtime implimentation is pretty standard so any jar/jad file that works in general will probably work. Specifically, I need a two types.

1. Password/account manager with at least a small level of encryption.
2. Address book. The phone is great at keeping phone numbers, but not street addresses. This one can be a good mobile website instead of a java app.

Any other suggestions would be appreciated. I've already installed Opera mini and google maps.

Thanks in advance.