I’ve had this problem the last 2 times I’ve updated my java run time environment. And both times was a serious headache. First, it wouldn’t update through java itself. Second, I went to java and tried their installer … which failed. Third, I downloaded their offline versions (both for 32 and 64 bit) and tried multiple times to install … and always the same, it failed to install. I disabled my antivirus and all security, I uninstalled java, I cleaned my registry manually and via numerous cleaners, I tried in safe mode, I used javara to clean up things before trying, and everything always fails. Bla!!!
If you’re tired of this continual nonsense, here’s a quick way to get Minecraft (with its java heart) up and going again (or at least to when the next java update comes out, which might fix everything … likely not).