June 2002
Intermediate to advanced
504 pages
10h 10m
English
Content preview from Java™ 2 Micro Edition Application DevelopmentBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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MIDlets
All applications for the MID Profile must be derived from a special class, MIDlet. The MIDlet class manages the life cycle of the application. It is located in the package javax.microedition.midlet.
MIDlets can be compared to J2SE applets, except that their state is more independent from the display state. A MIDlet can exist in four different states: loaded, active, paused, and destroyed. Figure 3.1 gives an overview of the MIDlet lifecycle. When a MIDlet is loaded into the device and the constructor is called, it is in the loaded state. This can happen at any time before the program manager starts the application by calling the startApp() method. After startApp() is called, the MIDlet is in the active state until the program manager ...
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