Every event object has the method that can be used to identify the component that triggered the event.
getsource()
getaction()
gettrigger()
getcomponent()

getSource()

Explanation:

Every event object has the getSource() method that can be used to identify the component that triggered the event.

For example , if a button is pressed on the user interface, this results in its event handler code getting executed. The event handler takes as parameter an Event object. This event object reference can then be used by the handler code to access the event source reference by calling event.getSource() .

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