# Class BasicComboBoxUI.ListDataHandler

java.lang.Object
javax.swing.plaf.basic.BasicComboBoxUI.ListDataHandler

All Implemented Interfaces:
  `EventListener, ListDataListener`

Enclosing class:
  `BasicComboBoxUI`

public class BasicComboBoxUI.ListDataHandler extends Object implements ListDataListener
This listener watches for changes in the `ComboBoxModel`.

This public inner class should be treated as protected. Instantiate it only within subclasses of `BasicComboBoxUI`.

See Also:
  - `BasicComboBoxUI.createListDataListener()`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `ListDataHandler()`
  Constructs a `ListDataHandler`.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `contentsChanged(ListDataEvent e)`
  Sent when the contents of the list has changed in a way that's too complex to characterize with the previous methods.
  `void`
  `intervalAdded(ListDataEvent e)`
  Sent after the indices in the index0,index1 interval have been inserted in the data model.
  `void`
  `intervalRemoved(ListDataEvent e)`
  Sent after the indices in the index0,index1 interval have been removed from the data model.

  ### Methods declared in class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`
  Modifier and Type
  Method
  Description
  `protected Object`
  `clone()`
  Creates and returns a copy of this object.
  `boolean`
  `equals(Object obj)`
  Indicates whether some other object is "equal to" this one.
  `protected void`
  `finalize()`
  Deprecated, for removal: This API element is subject to removal in a future version.
  Finalization is deprecated and subject to removal in a future release.
  `final Class<?>`
  `getClass()`
  Returns the runtime class of this `Object`.
  `int`
  `hashCode()`
  Returns a hash code value for this object.
  `final void`
  `notify()`
  Wakes up a single thread that is waiting on this object's monitor.
  `final void`
  `notifyAll()`
  Wakes up all threads that are waiting on this object's monitor.
  `String`
  `toString()`
  Returns a string representation of the object.
  `final void`
  `wait()`
  Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
  `final void`
  `wait(long timeoutMillis)`
  Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
  `final void`
  `wait(long timeoutMillis, int nanos)`
  Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

- ## Constructor Details

  - ### ListDataHandler

    public ListDataHandler()
    Constructs a `ListDataHandler`.

- ## Method Details

  - ### contentsChanged

    public void contentsChanged(ListDataEvent e)
    Description copied from interface: `ListDataListener`
    Sent when the contents of the list has changed in a way that's too complex to characterize with the previous methods. For example, this is sent when an item has been replaced. Index0 and index1 bracket the change.
    Specified by:
      `contentsChanged` in interface `ListDataListener`
    Parameters:
      `e` - a `ListDataEvent` encapsulating the event information

  - ### intervalAdded

    public void intervalAdded(ListDataEvent e)
    Description copied from interface: `ListDataListener`
    Sent after the indices in the index0,index1 interval have been inserted in the data model. The new interval includes both index0 and index1.
    Specified by:
      `intervalAdded` in interface `ListDataListener`
    Parameters:
      `e` - a `ListDataEvent` encapsulating the event information

  - ### intervalRemoved

    public void intervalRemoved(ListDataEvent e)
    Description copied from interface: `ListDataListener`
    Sent after the indices in the index0,index1 interval have been removed from the data model. The interval includes both index0 and index1.
    Specified by:
      `intervalRemoved` in interface `ListDataListener`
    Parameters:
      `e` - a `ListDataEvent` encapsulating the event information