After uninstalling Java have you spotted Java related Java Deployment Toolkit plugin in Firefox, yes Java uninstall not removed this one, don’t know why? these are annoyances users need to cope with Java and other software if you install a program that installs plugins and add-ons it should also remove them during their uninstallation, is it not? once this exists without Java on our systems knowing the use and purpose of it is not necessary. If you want to remove this plugin from Firefox, below is the procedure you need to follow.
Removing Java Deployment Toolkit Plugin from Firefox
We can disable this plugin, but it makes sense to completely remove it from our Computers. Close Firefox and any other browsers if running
1. Open run command by typing “ C:\Windows\system32\”
2. Search for npDeployJava1.dll, once Windows search found and shown it as a result select and delete it.
npDeployJava1.dll file is related to Java Deployment Toolkit Plugin and it can be found in “System 32” directory under Windows.
Be sure to backup this file before deletion so that you can restore if something goes wrong by pasting it in the same directory.
Do you want to remove unnecessary plugins from Chrome read How to Remove Plugins from Chrome.