Uninstalling the Java Plug-In from macOS X 10.7 and Up
This document covers how to uninstall the Java Plug-In on a Macintosh running OS X 10.7 and higher.
1. In Finder, navigate to Go in the Menu bar and then Go to Folder... The keyboard shortcut of command + shift + G will also pull up the go to window.
2. In the Go to Folder... type /Library/Internet Plug-Ins/ and click Go.
3. Finder will open the /Library/Internet Plug-Ins/ folder. In the folder, select the JavaAppletPlugin.plugin file. Delete that file and empty the trash.
4. Reboot the Mac.
5. The Java Plug-In is no longer on the Mac.