Class EventObject

java.lang.Object

java.util.EventObject

All Implemented Interfaces:: Serializable

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 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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https://docs.oracle.com/en/java/javase/25/docs/api/java.base/java/util/EventObject.html