Backing Bean is a special JavaBean (java class) that collects values ​​from components, reacts to events, interacts with business logic. Associated with each component.
There may be several of them and the bin is not optional for the component’s UI, but simply uses it. Backing bean contains fields that will be populated from the component (it will add the values ​​entered by the user). The JSF component will not work with Java classes or with anything other than Backing bean.
