Is there an app available to run the java files on Android jar?

Even though Android uses Java, it does not support executing files on Android JAR on its devices. However, you can use emulators to do this which are not available on Google Play Store but are available from the developers' website. I have provided the source link and download instructions are available there.

phoneME

JBlend

Netmite

JBED

Features of phoneME:

phoneME for Windows CE/Mobile and Android is an implementation of the phoneME open source J2ME application platform for your Windows Mobile phone or Android handheld device.

Each build includes the phoneME VM and an Android frontend wrapper with JNI bindings to the VM.

Most powerful, smooth user experience, less crashes.

JAD files are also associated with the Foundation Profile-MIDP Android application. Therefore, you can also use your browser to select an online JAD file to download and run the midlet. If you click on a JAD download link, a popup menu will appear and you need to choose the Foundation Profile-MIDP Android application

No root access required.

Features of Netmite App Runner:

This is the most popular application to run Java apps and games (J2ME/MIDP – jar/jad) app on Android OS.

This application has App Explorer, which helps to find existing Java apps and games on your phone/tablet device.

It is integrated with Browser-Browse any j2me site, click to run any jad/jar file.

It can auto-convert J2ME into an Android package (apk) on the fly.

You can immediately port your existing Java apps (jar/jad) to Android WITHOUT source code.

Features JBED:

JBED is also a very good Java/J2ME Emulator for Android.

It is fast but has some issues like – screen got hazy on landscape mode, unexpected force close.

It has a built -in app explorer.

Features JBlend:

JBlend is very Similar to JBED and much better.

It’s smooth and never crashes.

Support most Java apps / games