HUH? Seriously, you didn't read the alert or you don't understand it.
Don't care what YOU do, but the alert is real, dangerous and is a serious exploit of Java. Others should take heed. Or not.
If all you go by is these alerts then you may else well unplug from the internet. They will not keep you safe. OTOH, disabling java will mostly lose animated ads which are worthless anyway. Where this alert utterly fails is that it does not mention that the problem is malicious websites, not java. You must click on (or be redirected to) a malicious web site (and if you are redirected, it means the one you were at was malicious). Going to malicious websites has always been risky and always will be.