J2ME GUI Programming

This document provides an overview of GUI programming using the Mobile Information Device Profile (MIDP). It discusses MIDlets, the basic application component in MIDP, and their lifecycle states of loaded, active, paused, and destroyed. It also summarizes the high-level and low-level APIs for user interfaces in MIDP 2.0, including classes like Form, List, TextBox, and GameCanvas. Finally, it notes that UI elements must implement the Displayable interface to be shown on the device screen.