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Chapter 3 Event Handling - Coggle Diagram

- - - - The event object defines the change in state in the event source class.
      - contains two methods:
        
        getSource()
        
        toString()
    - - An event source is an object that generates an event.
      - Sources may generate more than one type of event.
      - An event source can have multiple event listeners registered on it.
    - - It is also called as event handler.
      - The Listener is responsible for generating a response to an event
      - The Listener waits until it has received an event and Once the event is received , the listener process the event & then returns the result.
- - - - public class DemoClass implements ActionListener
        {
        }
    - - anyComponent.addActionListener(instanceofEventHandlerClass);
    - - public void actionPerformed(ActionEvent e)
        {
        ...//code that reacts to the action...
        }