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, 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
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.