EventObject

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, 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:

JDK1.1

See Also:

Serialized Form

Field Summary

Fields

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

Constructor Summary

Constructors

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

Method Summary

All Methods

Instance Methods

Concrete Methods
Modifier and Type	Method and Description
`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.
  - toString
```
public String toString()
```
    Returns a String representation of this EventObject.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    A a String representation of this EventObject.