How to install a program developed in J2ME (JavaME) in a BlackBerry WITHOUT re-booting?

Question

I have a very unreasonable requirement from my overlord.

I developed a little application in JavaME. It is OK.

He is testing the app in different models of the BlackBerry. In some models, after the installation of the .jad, the phone ask for re-boot, in others, you could use the app just after the installation.

As a new requirement the app must be functional without re-booting.

Could you tell me how to do this? and with which code of JavaME? Have not found any relevant information (in code) about it.

Notice that the app is developed with Java and NOT with the BB SDK. Even more, I don't know the architecture of the BB's to see why in some cases it needs re-booting (neither the architecture of the other mobiles that work with JavaME!!).

Answer 1

If the application has not been installed on a device previously (or the device has been rebooted after the application has been removed) then you should not have to reboot after installation. There are a number of reasons why removal or replacement of (upgrading) an application will require a reboot. They all boil down to the OS has only one instance of the JVM and it is still holding references to objects that are defined in the application.

A very simple application that has not run since the last garbage collection may be replaced without rebooting. Any application that registers a listener or other objects with the the OS, or runs in the background will usually require a reboot.

To test what a new customer would experience having never used your application before try this:

1. If the application is installed on the device, remove it.
2. If the device does not reboot, reboot it (Alt-Caps-Del or battery pull).
3. Once it has finished restarting install the application.