How developers can code programs or applications with Java?!

Question

When I saw the code playground for Java it was just a black screen and only can show letters, numbers and symbols. No buttons, no colors no images...etc. So how developers can make Android applications within all the things I mentioned before, like the colors, the buttons, the images, the alerts..etc?

Answer 1

In java there are GUI concept learn them.. Like Javafx, swingx and lately Swing(which is now deprecated)
Now if you want to learn Android programming then first download the Android studio and the SDK.. and u need some tutorial to understand working on it..

Answer 2

they use the androud development kit. it comes with buttons and it also has xml which is like css but it's use for android

Answer 3

spring? I thought that was for back end

Answer 4

sorry got confused it was swingX

Answer 5

you can use spring for DI in UI

Answer 6

Thanks all..@Sami Khan I've downloaded Android Studio, and I will learn how to make Android applications..