Java SE 6/SE 7 Runtime is installed on the computer. You can also uninstall Java from a Mac if need be after the fact, or you can just disable Java too. Users might need to turn off SIP protection on the Mac before being allowed to complete the installation of Java. Download and run that Java installer to install Java Runtime Environment 6 in modern Mac OS versions if needed.
At that time, the Apple verison of Java 6 was removed during an OS X update, and replaced with the Oracle-supplied version of Java 7. Apple provided its own implementation of Java for Mac OS X until October, 2012. Java is a free software currently developed by Oracle Corporation. While launching, Dreamweaver (13.2 and earlier versions) prompts you to install Java SE 6 Runtime.
