I don't think I have loaded Java SE 12 properly : I don't believe I have loaded Java properly--chiefly because I can't see an exe suffix after the javac icon in program files (check out screenshot).

Furthermore I have carefully copied (in front and with semi-colon) and pasted the pathway for javac into the system variable editing box (again see screenshot)

I followed the oracle tutorial for the HelloWorldApp to the letter, setting up a my application folder and putting the notepad file inside. 

Take a look for yourself (ssh)

Et puis I open the shell punch in my script; hit dir; get the spiel about files and such; enter javac HelloWorldApp.java to only end invariably with

Javac not a recognised command

Arrgh what am I doing wrong? Is it as I suspect--that the Java SE12 isn't loaded properly (mind you I tried with earlier versions and it didn't work either)

Am not saving the notepad file correctly (ie helloworld?) 

Am I not editing the path for the javac compiler properly? Help please. Thanx