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MIDP 2.0, Personal Profile Give Mobile Java a Jolt


By Edward J. Correia
October 15, 2002 — 
More than a year after its introduction, Mobile Information Device Profile will finally get a boost. In late September, Sun Microsystems Inc.'s Java Community Process approved MIDP 2.0, which promises to deliver enhanced support for graphics, multimedia and messaging on cell phones and handheld PCs and other resource-constrained devices.

Included in the MIDP 2.0 specification (jcp.org/jsr/detail/118.jsp) are the Mobile Media API, which specifies new audio and video capabilities, and the Wireless Messaging API, which brings SMS and other messaging improvements. The spec also pledges backward compatibility with MIDP 1.0 and a minimal footprint increase.

The JCP also finalized J2ME Personal Profile, the successor to Personal Java, the J2SE subset that Sun is phasing out. Personal Profile is a CDC configuration that includes an implementation of Foundation Profile, and CDC HotSpot, a high-performance JVM that includes a configurable dynamic compiler. In addition to faster application performance, benefits of targeting the Personal Profile include compatibility with J2SE's standard JVM and access to bytecode verification, the Java Native Interface and the Abstract Windowing Toolkit.


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