Are you looking to avoid reinventing the wheel? You can use the modular code below to help your project along.
Do you need more of a head start? Try customizing one of the complete apps to fit your needs or dive into some other resources.
Modular Code for Blackberry
Calculate Heat Index
A Java class that will calculate the heat index.Link: https://github.com/USDepartmentofLabor/Calculate-Heat-Index-Java
Source: Federal
Federal API SDK
Blackberry SDK to ease access to DOL's and other federal agencies' APIs. For a list of APIs that this SDK has been tested against, please see the wiki. For documentation and sample code, please visit http://developer.dol.gov.Link: https://github.com/USDepartmentofLabor/BlackBerry_DOLDataSDK
Source: Federal
Complete Apps
OSHA Heat Safety
This app allows workers and supervisors to calculate the heat index for their worksite, and, based on the heat index, displays a risk level to outdoor workers.Link: https://github.com/USDepartmentofLabor/OSHA-Heat-Safety-Blackberry
Source: Federal
Etc
Blackberry github Repositories & Samples
Projects in the BlackBerry Organization at GitHub fall into one of the following categories: BlackBerry-led Projects or BlackBerry-sponsored Projects.BlackBerry-Led Projects - These are projects for which BlackBerry sets the direction, assigning the technical leader, allocating development resources and driving decisions like the release schedule and key features. Development in these projects is transparent, and we welcome contributions.
BlackBerry-Sponsored Projects - These are non-BlackBerry-led Open Source projects in which BlackBerry participates actively. Some projects are transient; for instance, after completing a port and upstreaming the changes, a project may just point to the upstream community.
The majority of BlackBerry-led projects are licensed under ASL2 (wikipedia, Apache); but some may use other licenses like LGPL or MIT. The license in BlackBerry-sponsored projects vary depending on their goal; for instance porting projects will follow the same license as their upstream communities.
Link: http://blackberry.github.com/index.html
Source: Third party