Build a website in Java

Hello and welcome to my website called GameMods. I am trying to, as the name may suggest already, set up a website that does feature Mods for games, game news, walkthrough videos and lets plays and also manuals for people having trouble with games and guides for troubleshooting and modding. While the site itself may be nothing new and there are quite a few similar ones out there I'd like to make this one as my personal take on all of these as I am an enthusiast gamer myself. Now, what do I need? Code! Most of the pages are designed already so that is, for the most part, not your concern. You will have to design and program a working backend that lets me edit and add new content and also lets me change site details as much as possible in case the site ever has to be adapted or changed and new pages can be added. Simple profiles with basic registration and login, commentary, like and favourite function and backend user Administration (delete user). The code for the website and functions should be java. (I already have a working ubuntu testserver for you, so I'll give you access to it to install all the stuff you need and I need for a running website.) Your job would include all the above and also setting up all things serverside and a database that contains all of the sites content in mysql. Design changes are originally not planned, but if however some of the functions do require a change, you are to inform me and make suggestions, how the desired result can be reached without altering the page itself too much.