How to port a java game to android

Hello,
I started to learn java because I wanted to make games for android and people sujested that at first I need to learn how to program to the pc and than move to android. I made the game with basic java with no libraries.I have heard that I can use the libgdx library to easly port to android but is it too late for me? Any ways what is the easiest way to port to android?
Thanks alot!!