Java Runtime for Adobe applications

I have just upgraded to OS X 10.11.5 (El Capitan). I was working with a legacy operating system for some time (Snow Leopard) because of costs associated with upgrading software I use every day.

I went to start up Adobe's Dreamweaver 5.5 and was faced with "You must install Java Runtime for OS X.

Now, I am aware that Adobe's Flash has been deprecated for a long time now, due to some serious security issues you could drive a truck through. The answer is, of course, JavaScript and HTML 5. But in order for the Adobe Dreamweaver applications to run at all, they need Java?? Because I understand that there are security problems in Java, too.

Since I design web pages and also want to keep my Macintosh safe, can someone let me know that this runtime for OS X is safe? I do not wish to have Java enabled by default, but I need the Adobe code editor in order to get work done.