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java.util
Class EventObject

java.lang.Object
 extended by 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

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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

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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.

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toString

public String toString()

Returns a String representation of this EventObject.

Overrides:

toString in class Object

Returns:

A a String representation of this EventObject.

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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