How i can creat android app with jave?

Answer 1

You can use Android Studio
You first need to download and install Android Studio
http://www.instructables.com/id/How-To-Create-An-Android-App-With-Android-Studio/

Answer 2

By just installing Java SDK, eclipse and a plugins ADT.

for simplicity refer to:

http://www.theserverside.com/tutorial/Step-by-step-guide-to-Android-development-with-Eclipse