You can use this app to calculate your GPA score. There is nothing fancy about that, you can easily find the formula online. On the other hand, I took a very interesting approach while generating the UI. You can see that I both use fixed UI elements, generated via FXML file and I also generate UI elements dynamically. Yes, there are easier ways to achieve this, for example by using CSS file (syntax is very similar if not the same in many cases as using CSS when building web apps) and by grouping the fields in the same group like the <div></div> section in web apps, you can change the group properties.