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 , HyperlinkEvent , LineEvent , ListDataEvent , ListSelectionEvent , MenuEvent , NamingEvent , NamingExceptionEvent , NodeChangeEvent , Notification , PopupMenuEvent , PreferenceChangeEvent , PrintEvent , PropertyChangeEvent , RowSetEvent , 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.

Constructor Detail

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.

Method Detail

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.