java.util
Class EventObject

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 , SSLSessionBindingEvent , 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
protected   Object	source           The object on which the Event initially occurred.

 

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

 

Method Summary
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
clone , equals , finalize , getClass , hashCode , notify , notifyAll , wait , wait , wait

 

Field Detail

source

protected transient Object source

The object on which the Event initially occurred.

EventObject

public EventObject(Object source)

Constructs a prototypical Event.

Parameters:

source - The object on which the Event initially occurred.

Throws:

IllegalArgumentException - if source is null.

getSource

public Object getSource()

The object on which the Event initially occurred.

Returns:

The object on which the Event initially occurred.

toString

public String toString()

Returns a String representation of this EventObject.

Overrides:

toString in class Object

Returns:

A a String representation of this EventObject.