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Thread: convert java EE to an androide app

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    Default convert java EE to an androide app

    Hello,

    I'm beginner to Java EE, I'm building a Java web app using frameworks as JSF, JPA and EJB and I want to convert the entire or just a part of the app to an android app. Any ideas?

    Best Regards


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    Default Re: convert java EE to an androide app

    Quote Originally Posted by fati_2014 View Post
    I'm beginner to Java EE, I'm building a Java web app using frameworks as JSF, JPA and EJB and I want to convert the entire or just a part of the app to an android app. Any ideas?
    These kinds of "conversions" are, according to me, very pointless and fictional. A Java EE application is a totally different thing from a native android application. Apart the language that is Java for both types of application, the only thing that may be eventually "portable" are classes for "beans" and business logic that don't have any connection/relation to the user interface.

    But the overall architecture and user interface require a total rethinking.
    Andrea, www.andbin.net SCJP 5 (91%) SCWCD 5 (94%)

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    Default Re: convert java EE to an androide app

    Going off of andbin's comment, when I create large-scale programs where I intend to have a web GUI and companion Android app, I make my framework extremely modular.
    I do this because Android does NOT fully implement the java JDK. There are many built-in java APIs which you will find are not accessible from Android (for example, the Swing framework just doesn't exist in the Android JDK).
    So I create modular layers of projects based on functionality that can (and should) be shared by both the web GUI and Android app.

    So I'll have something like this:
    1. SharedFramework Project
    2. WebFramework Project
    3. AndroidFramework Project

    The WebFramework and the AndroidFramework would both have SharedFramework as a dependency. It is important that SharedFramework does not import any APIs which cannot be accessed by the AndroidFramework.
    SharedFramework would have all the general business logic and functionality, while the WebFramework and the AndroidFramework have their more platform-dependent functionality.

    I've found this is the best way to "port", because it means that if there is a required change to the business logic which will effect both the web and Android platforms, I can make that change in one place: the SharedFramework, and then redistribute both at the same time. This also means that the business logic and basic functionality will not be different depending on the platform.
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  4. The Following 2 Users Say Thank You to aussiemcgr For This Useful Post:

    ChristopherLowe (May 25th, 2014), GregBrannon (January 10th, 2014)

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    Default Re: convert java EE to an androide app

    Why not to install your Java EE application on Android. There are Servlet containers ported to Android, for instance - Jetty.

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