I\'m learning Android Studio and the tutorials on youtube like:
https://www.youtube.com/watch?v=QAbQgLGKd3Y&list=PL6gx4Cwl9DGBsvRxJJOzG4r4k_zLKrnxl
say
Android Studio version 2.2 and higher comes with the latest OpenJDK embedded in order to have a low barrier to entry for beginners.
It is, however, recommended to have the JDK installed on your own as you are then able to update it independent of Android Studio.
If you are working with an Android API < 24, then you'll need to compile the project with Java 7 or do some extra steps to enable Java 8 features. (Note: Java 8 support is relatively new).
Android Studio 3.0 and later supports all Java 7 language features and a subset of Java 8 language features