EventObject (Java 2 Platform SE 5.0) (original) (raw)

java.util

Class EventObject

java.lang.Object extended by java.util.EventObject

All Implemented Interfaces:

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](../../java/lang/Object.html#wait%28long, int%29)

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](../../java/lang/IllegalArgumentException.html "class in java.lang") - 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](../../java/lang/Object.html#toString%28%29) in class [Object](../../java/lang/Object.html "class in java.lang")

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.