org.jfree.data.general

## Class DatasetChangeEvent

- java.lang.Object
- - java.util.EventObject
  - - org.jfree.data.general.DatasetChangeEvent

- All Implemented Interfaces:
    java.io.Serializable

      public class DatasetChangeEvent
      extends java.util.EventObject

  A change event that encapsulates information about a change to a dataset.
  See Also:
    Serialized Form

- - ### Field Summary

    - ### Fields inherited from class java.util.EventObject

      `source`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `DatasetChangeEvent(java.lang.Object source, Dataset dataset)` Constructs a new event.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `Dataset` | `getDataset()` Returns the dataset that generated the event.

    - ### Methods inherited from class java.util.EventObject

      `getSource, toString`

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### DatasetChangeEvent

          public DatasetChangeEvent(java.lang.Object source,
                                    Dataset dataset)

      Constructs a new event. The source is either the dataset or the `Plot` class. The dataset can be `null` (in this case the source will be the `Plot` class).
      Parameters:
        `source` - the source of the event.
        `dataset` - the dataset that generated the event (`null` permitted).

  - ### Method Detail

    - #### getDataset

          public Dataset getDataset()

      Returns the dataset that generated the event. Note that the dataset may be `null` since adding a `null` dataset to a plot will generated a change event.
      Returns:
        The dataset (possibly `null`).