EventObject (Java 2 Platform SE 5.0) - JDK 5 Documentation v1.5.0, Java 2 SDK 英文文档

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Java^TM 2 Platform
Standard Ed. 5.0

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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
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 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()