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I would like to convert the .jar (Java mobile application) file to a .apk (Android apps)

Can anyone suggest the freeware tool for Windows platform?

Please note

I would rather this is offline (I won't want to do this via an online service through a browser).

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closed as off-topic by Mokubai Sep 13 '14 at 6:56

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions seeking product, service, or learning material recommendations are off-topic because they become outdated quickly and attract opinion-based answers. Instead, describe your situation and the specific problem you're trying to solve. Share your research. Here are a few suggestions on how to properly ask this type of question." – Mokubai
If this question can be reworded to fit the rules in the help center, please edit the question.

If you did this, you would then have a Java mobile application in a .apk file. Since there's no device that can run such a file, what would the point be? Converting the file won't make it an Android application. – David Schwartz Aug 13 '12 at 12:01
@DavidSchwartz sir i review my question and post it again soon – BlueBerry - Vignesh4303 Aug 13 '12 at 12:04
@DavidSchwartz sir as per daverook post suggests that its possible i am confused – BlueBerry - Vignesh4303 Aug 13 '12 at 12:10
Are you trying to convert the data into a different file format? Or are you trying to convert the application into a different kind of application? Because really what you need is an emulator to run the application on an Android machine. – David Schwartz Aug 13 '12 at 12:16
@DavidSchwartz convert the file format i use Youwave emulator – BlueBerry - Vignesh4303 Aug 13 '12 at 12:24
up vote 3 down vote accepted

You have to Download the .Jar Apps to your PC.

  1. Now, Visit , You will see lots of Upload Forms.

  2. In the Option Two Form, Use the Upload Jar to Browse your .jar File on your PC, Leave every other thing as it is.

  3. Then Click on the Get Apk Button below the Forms, You Apps should be Proccessed and Available with the .APK Format.

  4. Download and Transfer to your Android Device and Start Using.

Now, I know you have not stated what you're trying to do but you can't just convert a jar or tar file to an apk (an apk is an installation file for Android) hoping it will run or install. First off, it has to be compiled for Android. Android's java library doesn't have all the swing stuff that's in normal java, so the app would have to be completely re-written to work on android and it has not been. (This information from this website)

The only 'offline' version I know of is not free ( - j2me to android)

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@thanks for your edit on my question,I prefer freeware offline tool any recommendations? – BlueBerry - Vignesh4303 Aug 13 '12 at 11:33
It's possible cuby is what you want. But it's hard to tell, since you really haven't told us what you want. – David Schwartz Aug 13 '12 at 12:23
i agree with cuby's feautures which i thought to need it thanks for spending your valuable time for this question – BlueBerry - Vignesh4303 Aug 13 '12 at 12:36

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