The BlackBerry® device and the BlackBerry® Java® Development Environment support the Java® ME MIDP standard, which provides a core set of Java APIs that you can use to develop wireless device applications. The BlackBerry device and the BlackBerry® Java® Development Environment also support the following JSRs:
JSR 30: Connected Limited Device Configuration Version 1.0(supported on devices with BlackBerry® Device Software version 4.0 or earlier)
JSR 37: Mobile Information Device Profile Version 1.0(supported on devices with BlackBerry Device Software Version 4.0 or earlier)
JSR 75: Portable Optional Packages for the J2ME Platform (PDAP) support for the PIM APIs only and the File Connection API for Java ME (supported on devices with BlackBerry Device Software version 4.2 or later)JSR 82: Java APIs for Bluetooth®JSR 118: Mobile Information Device Profile Version 2.0JSR 120: Wireless Messaging API (WMA) Version 1.1JSR 135: Mobile Media APIs (MM API) Version 1.1JSR 139: Connected Limited Device Configuration Version 1.1JSR 172: J2ME Web ServicesJSR 177: Security and Trust Services API for J2ME (SATSA)JSR 179: Location API for Java MEJSR 185: Java Technology for the Wireless Industry (JTWI)JSR 205: Wireless Messaging API 2.0 JSR 211: Content Handler APIJSR 226: Scalable 2D Vector Graphics API for Java MEJSR 238: Mobile Internationalization API
BlackBerry® devices support the following Java® APIs that are not part of the standard JSR definitions and that can provide greater features and functionality over what is available in the standard MIDP API libraries.
API
Description
User Interface APIs
You can use these APIs to create screens, menu items, and all the components of the user interface.
Persistent Data Storage APIs
You can use these APIs to store custom data locally within your application.
Networking and I/O APIs
You can use these APIs to establish network connections and read or write data to a server-side application.
Event Listeners
You can use the Event Listeners to respond to BlackBerry device user or system-initiated events on a BlackBerry device.
Application Integration APIs
You can use these APIs to integrate with the existing BlackBerry email, phone, calendar, contacts, browser, camera, media player, and task list applications.
Additional Utilities
You can use these additional APIs for data encryption and compression, XML parsing, Bluetooth® connectivity, location-based services, and so on.
The BlackBerry® Java® SDK 6.0 offers several exciting new and enhanced APIs and simulators that you can use to develop applications for BlackBerry devices that run BlackBerry® 6.
UIBlackBerry BrowserGraphics and animationLocation-based servicesMultimediaApplication integrationNetwork connections
参考：
http://docs.blackberry.com/en/developers/deliverables/5580/Support_for_standard_Java_APIs_446981_11.jsp
http://docs.blackberry.com/en/developers/deliverables/5580/Support_for_Java_API_extensions_446982_11.jsp
http://docs.blackberry.com/en/developers/deliverables/17966/Whats_new_in_BB_Java_SDK_6.0_1245066_11.jsp
