[Chapter 17] EventObject

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| Chapter 17 The java.util Package |

# EventObject

## Name

EventObject

## Synopsis

Class Name:

  `java.util.EventObject`

Superclass:

  `java.lang.Object`

Immediate Subclasses:

  `java.awt.AWTEvent`

Interfaces Implemented:

  `java.io.Serializable`

Availability:

  New as of JDK 1.1

## Description

The `EventObject` class is the superclass of all other classes that represent events in the Java 1.1 event model. The class is named `EventObject` to avoid confusion with `java.awt.Event`, which was used to represent events in the old Java 1.0 event model.

## Class Summary

    public class java.util.EventObject extends java.lang.Object
                 implements java.io.Serializable {
      // Variables
      protected transient Object source;
      // Constructors
      public EventObject(Object source);
      // Instance Methods
      public Object getSource();
      public String toString();
    }

## Variables

### source

#### protected transient Object source

Description

  The object that generated this `EventObject`.

## Constructors

### EventObject

#### public EventObject(Object source)

Parameters

  `source`

    The object that generated this `EventObject`.

Description

  This constructor creates an `EventObject` whose source is the given object.

## Instance Methods

### getSource

#### public Object getSource()

Returns

  The object that generated this `EventObject`.

Description

  This method returns the object that is the source of this `EventObject`.

### toString

#### public String toString()

Returns

  A string that represents this `EventObject`.

Overrides

  `Object.toString()`

Description

  This method returns a string representation of this `EventObject`.

## Inherited Methods

Method | Inherited From | Method | Inherited From
--- | --- | --- | ---
`clone()` | `Object` | `equals()` | `Object`
`finalize()` | `Object` | `getClass()` | `Object`
`hashCode()` | `Object` | `notify()` | `Object`
`notifyAll()` | `Object` | `wait()` | `Object`
`wait(long)` | `Object` | `wait(long, int)` | `Object`

## See Also

`AWTEvent`, `Event`, `Serializable`

EventListener |  | GregorianCalendar