Motorola C450 用户手册
5
Application Management
Application Management
23
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MIDlet Suite Version
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The number of MIDlets in the MIDlet Suite
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The Data Space (MIDlet suite resources).
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Program Space (Unpacked JAR)
Note: This image reflects a 176 x 220 display for document readability purposes only. The
C370, C450, and C550 maintain a 96 x 64 display.
C370, C450, and C550 maintain a 96 x 64 display.
MIDlet Suite Installation
Installation of MIDlet suites can occur from the Java Settings menu or the Browser. A
MIDlet Suite must be installed before any of its MIDlets can be executed. Installation
MIDlet Suite must be installed before any of its MIDlets can be executed. Installation
involves extracting the classes from the JAR file and creating an image that will be placed
into Program Space. The resources are then extracted from the JAR file and placed into
Data Space. The JAR file is then removed from the device, thus freeing up some Data
into Program Space. The resources are then extracted from the JAR file and placed into
Data Space. The JAR file is then removed from the device, thus freeing up some Data
Space where it was originally downloaded.
The space savings from removing the JAR file is one advantage of installation, but
The space savings from removing the JAR file is one advantage of installation, but
perhaps an even greater advantage is that class loading is not done during run time. This
means that a MIDlet will not experience slow-down when a new class is accessed. Even
further, the MIDlet will not have to share the heap with what has been loaded from the
means that a MIDlet will not experience slow-down when a new class is accessed. Even
further, the MIDlet will not have to share the heap with what has been loaded from the
JAR file. The figure below shows the Java Settings screen.