EventObject (Java Platform SE 8 ) (original) (raw)

• java.lang.Object

• • java.util.EventObject

• All Implemented Interfaces:
  Serializable
  Direct Known Subclasses:
  AWTEvent, BeanContextEvent, CaretEvent, ChangeEvent, ConnectionEvent, DragGestureEvent, DragSourceEvent, DropTargetEvent, FlavorEvent, HandshakeCompletedEvent, HyperlinkEvent, LineEvent, ListDataEvent, ListSelectionEvent, MenuEvent, NamingEvent, NamingExceptionEvent, NodeChangeEvent, Notification, PopupMenuEvent, PreferenceChangeEvent, PrintEvent, PropertyChangeEvent, RowSetEvent, RowSorterEvent, SSLSessionBindingEvent, StatementEvent, TableColumnModelEvent, TableModelEvent, TreeExpansionEvent, TreeModelEvent, TreeSelectionEvent, UndoableEditEvent, UnsolicitedNotificationEvent

public class EventObject
extends Object
implements Serializable
The root class from which all event state objects shall be derived.
All Events are constructed with a reference to the object, the "source", that is logically deemed to be the object upon which the Event in question initially occurred upon.
Since:
JDK1.1
See Also:
Serialized Form

• • Field Summary

  Fields

  Modifier and Type	Field	Description
  protected Object	source	The object on which the Event initially occurred.

  • Constructor Summary

  Constructors

  Constructor	Description
  EventObject(Object source)	Constructs a prototypical Event.

  • Method Summary

  All Methods Instance Methods Concrete Methods

  Modifier and Type	Method	Description
  Object	getSource()	The object on which the Event initially occurred.
  String	toString()	Returns a String representation of this EventObject.

     * ### Methods inherited from class java.lang.[Object](../../java/lang/Object.html "class in java.lang")  
     `[clone](../../java/lang/Object.html#clone--), [equals](../../java/lang/Object.html#equals-java.lang.Object-), [finalize](../../java/lang/Object.html#finalize--), [getClass](../../java/lang/Object.html#getClass--), [hashCode](../../java/lang/Object.html#hashCode--), [notify](../../java/lang/Object.html#notify--), [notifyAll](../../java/lang/Object.html#notifyAll--), [wait](../../java/lang/Object.html#wait--), [wait](../../java/lang/Object.html#wait-long-), [wait](../../java/lang/Object.html#wait-long-int-)`

• • Field Detail

     * #### source  
     protected transient [Object](../../java/lang/Object.html "class in java.lang") source  
     The object on which the Event initially occurred.  

  • Constructor Detail

    * #### EventObject  
    public EventObject([Object](../../java/lang/Object.html "class in java.lang") source)  
    Constructs a prototypical Event.  
    Parameters:  
    `source` \- The object on which the Event initially occurred.  
    Throws:  
    `[IllegalArgumentException](../../java/lang/IllegalArgumentException.html "class in java.lang")` \- if source is null.  

  • Method Detail

    * #### getSource  
    public [Object](../../java/lang/Object.html "class in java.lang") getSource()  
    The object on which the Event initially occurred.  
    Returns:  
    The object on which the Event initially occurred.  
    * #### toString  
    public [String](../../java/lang/String.html "class in java.lang") toString()  
    Returns a String representation of this EventObject.  
    Overrides:  
    `[toString](../../java/lang/Object.html#toString--)` in class `[Object](../../java/lang/Object.html "class in java.lang")`  
    Returns:  
    A a String representation of this EventObject.

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