Event and Listener (Java Event Handling) Changing the state of an object is known as an event. For example, click on button, dragging mouse etc. The java.awt.event package provides many event classes and Listener interfaces for event handling.
➢ Event Sources A source is an object that generates an event. Sources may generate more than one type of event. A source must register. listeners in order for the listeners to receive notifications about a specific type of event.
What is the delegation event model in Java?
In the Delegation model, a source generates an event and forwards it to one or more listeners, where the listener waits until they receive an event. Once the listener gets the event, it is processed by the listener, and then they return it. The UI elements can delegate an event's processing to a separate function.
In this model, a source generates an event and forwards it to one or more listeners. The listener waits until it receives an event. Once it receives the event, it is processed by the listener and returns it. The UI elements are able to delegate the processing of an event to a separate function.
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