I noticed certain features simply do not happen in Safari with Java turned off when I recently changed ISPs and was making change of address at sites that had been using the earlier one. In several instances I clicked "Submit" or the like and got exactly no feedback. Which made no sense. Then, two days ago, in trying to price some Adobe software, when I clicked on a button for more information, again nothing happened. I went to Chrome, pasted the URL, clicked on the button and got a drop down information window.
I came here because, when I went through the Help symbol at Preferences>Security but got no helpful instructions, so I wrote an explanation in the comment box, but when I clicked Submit THERE I got an error message that included something about a Java exception. I enabled Java and went back to try Submit again, with the same error!
For the record, here is what I was trying to send to the comment-readers:
Wanting to control where Java can be run, I clicked on "Manage Website Settings" and got an empty list.
So I clicked on the Help button on the Preferences>Security page and came to help, which told me NOTHING about HOW to enter websites on that list, that empty list.
Therefore, no help.
Hunh! In trying to send this apparently I need to have Java turned on. See? That's just another indication of confusion out here in user land.
Well, that didn't work either. I will try another route. END OF NOT-SENDABLE COMMENT.
Now I will web search for useful information. I have chosen to be kept abreast of this discussion, too.