MIDlet projects are the most common choice as the platform for mobile applications. MIDlet projects are associated with either the CLDC or CDC configuration of Java ME, depending on the target platform. Combined with CLDC, MIDlet project provides you with a complete Java runtime environment. Currently there are two versions of MIDP supported in MTJ:
MIDP 2.0 is backward compatible with MIDP 1.0, allowing applications created with MIDP 1.0 to run in devices supporting MIDP 2.0. MIDP 2.0 allows you to produce enhanced mobile code that can be signed with a certificate.
In MTJ, the desired Java ME profile is chosen in the project creation phase. This includes defining general properties for the JAD file. We recommend you to edit the JAD file in more detail before building the application.