Storing Persistent Data

Exercise

Write an application that stores and uses persistent data.

In the static initializer, retrieve a reference to a PersistentObject using the store variable.
In the synchronized block, if the PersistentObject is empty, set its contents to a new Vector.
Retrieve PersistentObject contents and store it in a Vector.
TIP: Use the _data variable already defined.
Add code to the StoreInfo inner class to define an object that can persist. TIP: Each object stores information about one music store.
Add code to saveItem to create a Save menu item that saves the music store information that users have entered.
Add code to getItem to create a Get menu item that retrieves and displays data from the last music store that was added.

In this exercise, you discovered the following things:

Go to the next exercise in “The Basics of Developing for BlackBerry”, Connecting to the network