SpringSource Tool Suite doesn't start well with installed JDK??

After 2 days of internet searching about a new framework (really, its obviously a new and strange framework for me) * don't ask the name, because I'm still confused with this kind of framework :))*. For the starting point, I download the latest RELEASE of STS (SpringSource Tool Suite)
and then I'd got stuck with a creepy mistake of mine...hahahhahhahahaha :)), an annoying "Eclipse is running in a JRE, but a JDK is required" error statement appears. These are the snapshots when I run the STS.

click the image to open it in the real size

How To Fix The Error?

First is setting my JDK as a default Java environment in my STS (to be a default installed JRE).

Open eclipse. Click on ‘Window’ -> ‘Preferences’ -> ‘Java’ -> ‘Installed JREs’.

If you can’t find any JDK on the list -> click ‘Add’ -> ‘Standard VM’ -> set all paths and click ‘Finish’.

After that – check this JDK on the list of installed JREs and click ‘OK’.

Secondly, add SDK path to my STS.ini. This file is located at the same folder where STS.exe is found. right after I find this file, I edit this file to configure my SDK location. To add the SDK just type

before I add that code, my STS.ini configuration is

after I add the code, then the configuration is

Finally, I restart my STS and everything works normally ^^v.

here is my lovely STS welcome screen