My java II final project was a spring shopping cart application that allowed a normal user the ability to select items and put them into their cart, and an admin user the ability to add/remove items to tables that the normal users would be able to put in a cart. It demonstrated multiple skills that would look good on a resume; spring framework, html front end pages, database interactions, unit tests, git collaboration (not really applicable if you do this solo, but you can still show git version control), and using maven. However it was a group project and you said in another comment this is your first java project so I'm not sure you'd want to do this, it is however an idea. IIRC it was a 2 week project with 4 people so about 80-100 man hours probably went into it. I can DM you our final repo if you are interested but can't provide any instructions. Personally I make a lot of discord bots, they can be pretty simple and you could also implement some of the things I mentioned, especially database interactions. I'm still in school so I can't tell you how helpful any of this actually is on a resume, I did send out about 10 applications after the first 2 years of community college but that was right after covid started which was really rough on the job market afaik. The java classes I took expressed spring as being one of the most important things employers wanted and from all the jobs I looked at almost all of them had Spring listed in the prerequisites. More on reddit.com

Nothing comes close to guava in quality. More on reddit.com

That is a lousy professor. You want to learn more? Nope, don't think so. You could find open source projects that are written in java. Or maybe check out the source code for OpenJDK (library implementation). But better yet, pick up a book. You have the popular book Clean Code by R. C. Martin that covers how to write clean and maintainable code. Or maybe the book Head first: Design Patterns by that covers common designs used to make adaptable and reusable code. But your professor has one point. You should not get lost into code design when still learning the basics. So remember to focus on what you learn in class! :) More on reddit.com

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