This Java - Create Zip file in memory - Read Now

I find myself writing and rewriting this piece of code whenever I want to zip a set of files (in memory) and return the zipped file back as an object in memory. I often use this when the user requests a download of multiple reports and the deployment environment doesn't allow for disk access.I thought I'd post it here so that I could copy-paste it the next time I need it :) If you've stumbled