With what language for example

Android app?

Yes u can simply export it as apk file with other software, java is not must

U mean load in to mobile or run it?

You can't write an app in every language and there are many types of apps

Yonas: If you want to make an android app you have know java first,and to learn java easily you have to atleast know basics of programming language,it's well recommended to know c++ before you start any of developing mobile,web and desktop application..but In general for your information,you use android studio to develop android applications