FYI - Tried to install the latest Java from Java.com and Avast lit up with what I assume are false positives.
and what did avast say? … you may post a screenshot
next time, post virus and false positive problems in viruses and worms forum section 
It said good morning and a fine how da ya do 
Win32:Evo-Gen [susp] = suspicious
you can report it here https://support.avast.com/
Done thanks