Note that the JRE installs to /Library/Internet Plug-Ins/JavaAppletPlugin.plugin only, so it cannot easily be used by Java desktop applications and appears to be for applets only.<p>It also installs a System Preferences plugin that opens up a custom Swing-based settings panel that looks awful on a Retina MBP. It tries to replicate the look of the standard Apple Java Preferences app, but is confusing because it doesn't affect the system Java that you'd see when doing 'which java' from the command line.<p>The installer script then sets the permissions on /Library/Internet Plug-Ins/JavaAppletPlugin.plugin to root:wheel. This is the same as the bundled Java installations.