The Java ME Platform SDK emulator stores contact, calendar, and to-do information in standard files on your desktop computer’s hard disk. All information is stored in:
WindowsDocuments and Settings\User\Application Support\javame-sdk\3.0\work\emulator-instance\appdb\PIM
Mac OSUser/Application Support/javame-sdk/3.0/work/emulator-instance/appdb/PIM
Each device instance has its own data. Lists are stored in subdirectories of the contacts, events, and todo directories. For example, a contact list called Contacts is contained in /appdb/PIM/Contacts:
Inside the list directory, items are stored in vCard (.vcs) or vCalendar (.vcf) format (see http://www.imc.org/pdi/). Contacts are stored in vCard format, while calendar and to-do items are both stored in vCalendar format.