com.h3c.util.observer

## Interface DataListener<E>

- Type Parameters:
    `E` - Type of the data items to listen to.
  All Known Implementing Classes:
    AbstractDataListener

      public interface DataListener<E>

  Data listener.

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `added(E item)` Method called to notify a new item has been added.
    `void` | `deleted(E item)` Method called to notify an item has been deleted.
    `void` | `updated(E item)` Method called to notify an item has been updated.

- - ### Method Detail

    - #### added

          void added(E item)

      Method called to notify a new item has been added.
      Parameters:
        `item` - added item.

    - #### updated

          void updated(E item)

      Method called to notify an item has been updated.
      Parameters:
        `item` - updated item.

    - #### deleted

          void deleted(E item)

      Method called to notify an item has been deleted.
      Parameters:
        `item` - deleted item.

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