Of course, Java web can basically be a b/s structure, ranging from forums to large enterprise-level management software. As for your graduation project, it is estimated that there will not be enough time, and a person will encounter many problems. It is suggested to do something that is not very complicated and should be done according to your own interests, such as making a shopping website, forum, blog, etc. I think Renren.com has done a good job, so you can try to achieve it.