How to replace .class file in android.jar

Question

Im trying to develop bluetooth app using galaxy s3. Recently I got a new samsung bluetooth le api. There are two class file, BluetoothDevice.class and BluetoothAdapter.class. I want to replace original class files with it. Or Are there any other api? thanks to any comments..

Answer 1

You can't change that library. Try to read the docs and combine them to your project or find another library

Answer 2

If you want to change the code of those classes, you can decompile then, make your changes and then recompile.