This 3 sentence summary provides the key details about the document: This white paper from Sun Microsystems provides a brief tour of the Mobile Information Device Profile (MIDP) application programming interfaces (APIs) for wireless applications, discussing the APIs and how software developers can use them to create applications for mobile devices. The document is copyrighted by Sun Microsystems in 2001 and details that parts of their products may be derived from Berkeley BSD systems and that UNIX is a registered trademark licensed through X/Open Company.