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## org.richfaces.event
Interface ItemChangeSource

    public interface ItemChangeSource

Since:
  Jul 20, 2010
Author:
  akolonitsky

Method Summary
`void` | `addItemChangeListener(ItemChangeListener listener)` Add a new `ItemChangeListener` to the set of listeners interested in being notified when `ItemChangeEvent`s occur.
`ItemChangeListener[]` | `getItemChangeListeners()` Return the set of registered `ItemChangeListener`s for this instance.
`void` | `removeItemChangeListener(ItemChangeListener listener)` Remove an existing `ItemChangeListener` (if any) from the set of listeners interested in being notified when `ItemChangeEvent`s occur.

Method Detail

### addItemChangeListener

    void addItemChangeListener(ItemChangeListener listener)

  Add a new `ItemChangeListener` to the set of listeners interested in being notified when `ItemChangeEvent`s occur.

  Parameters:
    `listener` - The `ItemChangeListener` to be added
  Throws:
    `NullPointerException` - if `listener` is `null`

### getItemChangeListeners

    ItemChangeListener[] getItemChangeListeners()

  Return the set of registered `ItemChangeListener`s for this instance. If there are no registered listeners, a zero-length array is returned.

### removeItemChangeListener

    void removeItemChangeListener(ItemChangeListener listener)

  Remove an existing `ItemChangeListener` (if any) from the set of listeners interested in being notified when `ItemChangeEvent`s occur.

  Parameters:
    `listener` - The `ItemChangeListener` to be removed
  Throws:
    `NullPointerException` - if `listener` is `null`

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