I want to study mobail app devaloping

Answer 1

Very good

Answer 2

There is an app called "Programming Hub" which has tons of mini Java programs. After finishing this app, try going through it and understanding the code. It helps me a lot.

Answer 3

Java is essential then

Answer 4

This app is the best guide for you.. just try to read every example and try to practice and then you will be ready for programming mobile apps.