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Editorial Team
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Asked: 2026-06-06T19:36:36+00:00

In Android (after building), we find in the bin folder a file of extension

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In Android (after building), we find in the bin folder a file of extension .apk.

In my BlackBerry project, I cannot find something like the apk, and I want to know what is the extension for BlackBerry Java apps?

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  1. Editorial Team

    For BlackBerry, there’s more than one way to build an app. If you’re using one of the common tools to build (e.g. BlackBerry Plug-In for Eclipse, or the Legacy RIM JDE), they will generally build both.

    A .cod file is basically RIM’s version of a .zip file, that contains the entire app. Usually, the .cod file, when unpacked, contains many more smaller .cod files inside it. This is probably the closest thing to the .apk file for Android.

    Alternately, you can install apps Over-The-Air (OTA), by using a Java application descriptor (.jad) file, which is a small text file that references the main binary app bundle. Here’s an example of a jad file:

    MIDlet-Name: HelloBB
MIDlet-Version: 1.0.0
MIDlet-Vendor: BlackBerry Developer
MIDlet-Jar-URL: HelloBB.jar
MIDlet-Jar-Size: 26037
MicroEdition-Profile: MIDP-2.0
MicroEdition-Configuration: CLDC-1.1
MIDlet-1: ,res/img/icon.png,
RIM-MIDlet-Flags-1: 0
Manifest-Version: 1.0
RIM-COD-URL: HelloBB.cod
RIM-COD-Size: 13304
RIM-COD-Creation-Time: 1340831331
RIM-COD-Module-Name: HelloBB
RIM-COD-Module-Dependencies: net_rim_cldc,net_rim_locationapi,net_rim_bb_lbs_api_2
RIM-COD-SHA1: bf 00 66 e0 30 5d 03 8c 8a b6 00 36 cf c9 76 98 40 d2 71 d9

    When you build with the Eclipse plug-in, I believe the default is to produce all these files under the deliverables directory inside your main project directory, with subdirectories under that depending on what kind of app you’re building, and which OS version you’re targeting. For example:

    $ cd deliverables/Standard/5.0.0/
$ ls
HelloBB.cod HelloBB.csl HelloBB.cso HelloBB.debug   HelloBB.jad HelloBB.jar HelloBB.rapc
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