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

Represents Events fired by Objects.

Since:

1.1

See Also:

EventListener, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Object	source The source object; in other words, the object which this event takes place on.

Constructor Summary

Constructors

Constructor and Description
EventObject(Object source) Constructs an EventObject with the specified source.

Method Summary

Methods

Modifier and Type	Method and Description
Object	getSource() Returns the source of the event.
String	toString() Converts the event to a String.

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 source object; in other words, the object which this event takes place on.

Constructor Detail

EventObject

public EventObject(Object source)

Constructs an EventObject with the specified source.

Parameters:

source - the source of the event

Throws:

IllegalArgumentException - if source is null (This is not specified, but matches the behavior of the JDK)

Method Detail

getSource

public Object getSource()

Returns the source of the event.

Returns:

the event source

toString

public String toString()

Converts the event to a String. The format is not specified, but by observation, the JDK uses: getClass().getName() + "[source=" + source + "]";.

Overrides:

toString in class Object

Returns:

String representation of the Event

See Also:

Object.getClass(), Object.hashCode(), Class.getName(), Integer.toHexString(int)