Jul 01, · Java for OS X installs the legacy Java 6 runtime for OS X El Capitan, OS X Yosemite, OS X Mavericks, OS X Mountain Lion, and OS X Lion. This package is exclusively intended for support of legacy software and installs the same deprecated version of Java 6 included in the and releases. El Capitan, Dreamweaver, and Java SE 6. 10 Jun. In El Capitan, you can’t edit system files because of a new security feature called Rootless. I tried saving the edited realtime-windowsserver.com file, but I kept receiving a message saying, “you do not have the necessary permissions to edit this file,” or something like that. Where can I get the latest version of Java 6? We highly recommend downloading and installing the latest Java version. The latest release for Java contains many new features, performance enhancements, and bug fixes to improve the running of Java applets or applications. (El Capitan) will be the last OS X release that supports Java 6, and as.