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Class EventObject

java.lang.Object
java.util.EventObject
All Implemented Interfaces:
Serializable
Direct Known Subclasses:
AppEvent, 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:
1.1
See Also:

Field Summary

Modifier and Type Field Description
protected Object source
The object on which the Event initially occurred.

Constructor Summary

Constructor Description
EventObject(Object source)
Constructs a prototypical Event.

Method Summary

Modifier and Type Method Description
Object getSource()
The object on which the Event initially occurred.
String toString()
Returns a String representation of this EventObject.

Methods declared in class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

source

protected transient Object source
The object on which the Event initially occurred.

Constructor Details

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 Details

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 String representation of this EventObject

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/EventObject.html