How can i check is desktop HighContrast turned on [требует правки]

I've encountered a problem where I need to know is the "HighContrast" turned on the operating system.

That's how I do it in Windows OS:

Toolkit toolkit = Toolkit.getDefaultToolkit();
Boolean highContrast = (Boolean)toolkit.getDesktopProperty("win.highContrast.on");

But I want to know how can I check it on Mac/Unix OS. If you have any ideas on how to do this, I will be very grateful to you.

Thanks