Which is the best language to develop apps (Easiest and Most logical and useful)???

Answer 1

C# for windows desktop apps.
Java for android and non-windows apps.
personal preference tho. you should try some youself, the best language is the one you feel confident with

Answer 2

Do in need to learn any other language with java to make android apps ??

Answer 3

I think it's Ruby, but Java is good too. You should select one