The first area that we will take a look at is the Personal Information Management, or PIM applications and data. PIM applications are a rather generic name for a group of tools that manage your personal information, especially as it relates to your handheld. This could be stretched to include a lot of things, but it generally means your messages, contacts, and scheduling information that help you to manage your life. In BlackBerry terms it means the Messages, Address Book, Calendar, Tasks, and Notes.
Access to the PIM data in the BlackBerry SDK is provided through the JSR-75 specification, which is a Java standard. Like many of the Java standards in the BlackBerry SDK, there are also BlackBerry-specific extensions available that expand the basic classes with new BlackBerry-specific functionality.
Like many of the other standards we find in Java, JSR-75 implements a factory pattern where one class, in this case the PIM class, is used to create objects for the other more specific...