Struts

Open-source framework for building web applications in Java

Follows the Model-View-Controller (MVC) design pattern, which separates the application logic into three main components:

• Model: Represents the data and business logic.

• View: Represents the user interface (UI).

• Controller: Handles user input and interacts with the Model and View.

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.action

• In Struts, .action files are associated with specific controller actions. These actions are typically mapped in struts-config.xml and serve as entry points for specific requests. A .action URL (e.g., /login.action) will invoke a corresponding action class in the server-side code.

• The .action file usually maps to a Java class that contains the business logic for processing requests, such as form validation, database interactions, and data manipulation.