JavaServer Faces Standard Components
The JSF framework allows developers to build applications utilizing a series of views, and each view consists of a series of components. The framework is kind of like a puzzle in that each piece must fit into its particular place in order to make things work smoothly. Components are just another piece of the puzzle. Components are the building blocks that make up JSF views. One of the strengths of using the JSF framework is the abundance of components that are available for use in views. To developers, components can be tags that are placed within the XHTML views. Components resemble standard HTML tags; they contain a number of attributes, an opening tag and a closing tag, and sometimes components that are to be embedded inside of others. Components can also be written in Java code, and their tags can be bound to Java code that resides in a JSF managed bean (aka, controller class).