Problems with the Android IDE

With my installation of the Android IDE I am getting the error:

Failed to find target with hash string 'android-26' in: /home/{username}..

https://stackoverflow.com/questions/46896341/failed-to-find-target-with-hash-string-android-26-in-opt-android-sdk-linux

hmm...well that is entertaining: I do not have java installed on my computer...

Goal:

I am trying to run this tutorial..

https://www.youtube.com/watch?v=7GiyfL6MPg4