public interface ElementListener extends EventListener
ElementListener will perform some actions when an Element is added. 
      DocListener 
       | Modifier and Type | Method and Description | 
|---|---|
boolean |  
           add(Element element) 
            
              Signals that an   Element was added to the Document. 
             |  
          
boolean add(Element element) throws DocumentException
Element was added to the Document. 
          element - a high level object 
           true if the element was added, false if not. 
           DocumentException - when a document isn't open yet, or has been closed 
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