Support for Assistive Technologies Assistive technologies such as screen readers can use the Accessibility API to get information from Swing components. Because support for the Accessibility API is built into the Swing components, your Swing program will probably work just fine with assistive technologies, even if you do nothing special. With very little extra effort, however, you can make your program function even more smoothly with assistive technologies, which might well expand its market. See How to Support Assistive Technologies for details. Most noncontainer Swing components have models.
Some components have multiple models.
You don't usually need to know about the models that a component uses. For example, almost all programs that use buttons deal directly with the JButton object, and don't deal at all with the ButtonModel object. Because they give you the ability to work with components more efficiently and to easily share data and state between components. One common case is when a component, such as a list or table, contains lots of data. It can be much faster to manage the data by directly working with a data model than by having the component forward each data request to the model.