"Reopen the Java Control Panel" doesn't do anything
I'm getting the same thing. And when I try to reinstall it, the Java installer just bounces a few times and never opens a window. Never starts, unable to reinstall it.

I created another profile/account and used it after switching - and the apps that had been failing to start - never use any CPU - would work like they were supposed to.

By now it's pretty obvious something is not right in my home directory, but it's not being intuitive.