How to create your own library for Android development to be used in every program you write?

Question

I am a Delphi programmer and have written, over the years, hundreds of classes and routines which I can use in every Delphi program I write.

This library

Answer 1

Convert all of your class in Java and make a jar file. Use this jar in your android project by copying in libs/ folder and then adding in to build path. Make a clean of project and then run it.