Jar file just vanished?

Hello all,

Out of the blue, I started getting this error today on Lucee

“couldn’t find tools.jar at: C:\lucee\jdk\lib\tools.jar”

My install worked fine yesterday, but today, that file is apparently gone. But I am sure that I have not been in anywhere near my Lucee directory in weeks.

So, where do I find tools.jar? And what caused this?.

And how do I keep it from happening again?

Of course, I am on a deadline, so any help would be greatly appreciated.