Custom bussiness logic help

I am trying to do the bussiness logic following quick start guide in windows.
I used UnixUtils to run from command prompt but after running following command
sh sercret key the codeRunner terminates and says can not installed java . my java working properly from command prompt what is wrong with that?

I run CodeRunner.bat in windows that lead to error which is: at least java version 1.8 required.

I got puzzled by this while in quick start guide mentioned about necessity of java 7 compile.
Is CodeRunner.bat equivalent of in windows?

Finally I completed quick start guide successfully

Yes, Java version 8 is required to launch CodeRunner.

Are you talking about this guide - ? We shall update it, thanks for pointing out.