JAVA Events

 In delegation event model, an event is an object that describes a state change in a source.

 Events can be generated as a consequence of a person interacting with the elements in a graphical user interface.

  Some activities that cause events to be generated are pressing a button; entering a character via keyboard, mouse click etc.

 Events like one generated when a timer expires, a counter exceeds a value are not directly caused by interactions with a user interface.