Programs written using J2ME java programming for cell phones and other mobile devices.

-Thanks to lordms12 over at DreamInCode.net
Here is some for your phone: Sony Ericsson K550i
Profiles MIDP-1.0 MIDP-2.0
Configuration CLDC-1.1
JTWI version 1.0
Screen resolution 176x176
Color screen Yes
Double buffered screen Yes

-JEdit 4.3 is a text editor that makes it easy to read and edit Java code.
-Wireless Toolkit 2.5.2 is a tool that allows you to build, emulate, and package J2ME programs.
-Here's a really good tutorial that I've been following to get started.