JavaServer Faces
JavaServer Faces (JSF) is a Java-based web application framework for building component-based user interfaces for web applications. It simplifies development by providing a component model, event handling, and navigation management, often integrated with Java EE (now Jakarta EE) platforms. JSF allows developers to create reusable UI components and manage application state through a server-side model.
Developers should learn JSF when building enterprise-level web applications in Java, especially in environments that use Jakarta EE or require integration with other Java technologies like EJBs and JPA. It is useful for projects needing rapid development with pre-built UI components, such as admin panels or data-driven applications, and when working in legacy systems or corporate settings where Java EE is standard.