Enable Java, fire fox

Question: How do I enable FF to work with Java?

Background: I want to install jEdit (to study XML etc). jEdit requires java installed but first I need to enable FF.

The following image gives lots of options to read through and find out the right install. Please tell me which install will do what I want. Also, if possible give a brief description about the some or all remaining installs.EnableJava
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Mike EghtebasDatabase and Application DeveloperAsked:
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David Johnson, CD, MVPOwnerCommented:
java is a plugin not an addon
available from https://www.java.com/en/download/

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but first I need to enable FF.
Why? There's no connection between FF and jEdit
" How do I enable FF to work with Java"
What do you mean by" enable" other than just installing?
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Sudeep SharmaTechnical DesignerCommented:

First you need to download and install JRE on your computer. So go to the link 1 below and download the JRE on your OS.

By default in Firefox, if you see the installed plugins/add-ons, on the Java/JRE addon you would see that it is configure to "Ask to Activate" by that it means that everytime you are opening anything which needs Java it would prompt you and you have choose whether you want to run it.
"Always Activate" option on JRE/Java would not be available in this add-ons window, it would be grayed out.

Now there is a way to make it enable as well, however you have to be aware that it would be  very big security threat and you make sure that you know what you are opening.
So that fix is, that you open a new tab in firefox and type about:config and hit enter.
Click on I’ll be careful prompt.
Search for extensions.blocklist.enabled
Double click on it and make is false.
 Then go back to the addons and now you can make Java/JRE to "Always Activate".

I hope that would fix the issue with jEdit.


Link 1:

First you need to download and install JRE on your computer.

Firstly, why does everyone keep addressing me? I didn't ask the question ;)
Secondly, if you're going to be doing Java development with jEdit, your first thought should be to install a JDK, not a JRE.
Mike EghtebasDatabase and Application DeveloperAuthor Commented:
my apology for the delay. I will respond shortly.
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