A full stack Java developer is a web developer who works with Java, a popular programming language. Full-stack web developers can create complex online apps and websites. These experts write code for web-based applications on the front end, back end, database layer, and debugging of websites and web apps. Full stack development is the process of creating a web application's front end (client side) and back end (server-side). Front-end or client-side development in Java requires working on the layout, user interface, graphics, presentation, interactive components, and browser compatibility of the website, portal, or app. Front-end development entails creating elements that users view when interacting with the software.