Java Reference
In-Depth Information
Table 1-1.
J2ME Configurations, Profiles, and Optional APIs (Continued)
Configurations
JSR
Name
URL
Profiles
JSR
Name
URL
http://jcp.org/jsr/detail/37.jsp
37
Mobile Information Device Profile 1.0
118
Mobile Information Device Profile 2.0
http://jcp.org/jsr/detail/118.jsp
http://jcp.org/jsr/detail/75.jsp
75
PDA Profile 1.0
46
Foundation Profile 1.0
http://jcp.org/jsr/detail/46.jsp
http://jcp.org/jsr/detail/129.jsp
129
Personal Basis Profile 1.0
62
Personal Profile 1.0
http://jcp.org/jsr/detail/62.jsp
http://jcp.org/jsr/detail/219.jsp
219
Foundation Profile 1.1
217
Personal Basis Profile 1.1
http://jcp.org/jsr/detail/217.jsp
Optional APIs
JSR
Name
URL
75
PDA Optional Packages for J2ME
http://jcp.org/jsr/detail/75.jsp
http://jcp.org/jsr/detail/82.jsp
82
Java APIs for Bluetooth
135
Mobile Media API 1.1
http://jcp.org/jsr/detail/135.jsp
http://jsp.org/jsr/detail/184.jsp
184
Mobile 3D Graphics
179
Location API for J2ME
http://jcp.org/jsr/detail/179.jsp
http://jcp.org/jsr/detail/120.jsp
120
Wireless Messaging API 1.0
205
Wireless Messaging API 2.0
http://jcp.org/jsr/detail/205.jsp
http://jsp.org/jsr/detail/172.jsp
172
J2ME Web Services APIs
66
RMI Optional Package
http://jcp.org/jsr/detail/66.jsp
Configurations
A configuration specifies a JVM and some set of core APIs for a specific family of devices. Currently
there are two: the Connected Device Configuration (CDC) and the Connected, Limited Device
Configuration (CLDC).
The configurations and profiles of J2ME are generally described in terms of their memory
capacity. Usually a minimum amount of ROM and RAM is specified. For small devices, it makes
sense to think in terms of volatile and nonvolatile memory. The nonvolatile memory is capable
of keeping its contents intact as the device is turned on and off. ROM is one type, but nonvolatile
memory could also be flash memory or battery-backed RAM. Volatile memory is essentially
workspace and does not maintain its contents when the device is turned off.
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