[android] Difference between clean, gradlew clean

What is the difference between the following statements when issued from a Android Studio Project's terminal :

Android_Studio_Project_Path: ./gradlew clean

Android_Studio_Project_Path: ./gradlew clean assembleDebug

Android_Studio_Project_Path: ./gradlew clean :assembleDebug

and normal Android Studio --> Build --> Clean.

What would be the difference in the internal process.

You can also use

./gradlew clean build (Mac and Linux) -With ./

gradlew clean build (Windows) -Without ./

it removes build folder, as well configure your modules and then build your project.

i use it before release any new app on playstore.

You should use this one too:

./gradlew :app:dependencies (Mac and Linux) -With ./

gradlew :app:dependencies (Windows) -Without ./

The libs you are using internally using any other versions of google play service.If yes then remove or update those libs.