org.apache.commons.collections4.iterators

## Class IteratorEnumeration<E>

- java.lang.Object
- - org.apache.commons.collections4.iterators.IteratorEnumeration<E>

- All Implemented Interfaces:
    Enumeration<E>

      public class IteratorEnumeration<E>
      extends Object
      implements Enumeration<E>

  Adapter to make an `Iterator` instance appear to be an `Enumeration` instance.
  Since:
    1.0

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `IteratorEnumeration()` Constructs a new `IteratorEnumeration` that will not function until `setIterator` is invoked.
    `IteratorEnumeration(Iterator<? extends E> iterator)` Constructs a new `IteratorEnumeration` that will use the given iterator.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `Iterator<? extends E>` | `getIterator()` Returns the underlying iterator.
    `boolean` | `hasMoreElements()` Returns true if the underlying iterator has more elements.
    `E` | `nextElement()` Returns the next element from the underlying iterator.
    `void` | `setIterator(Iterator<? extends E> iterator)` Sets the underlying iterator.

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

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

- - ### Constructor Detail

    - #### IteratorEnumeration

          public IteratorEnumeration()

      Constructs a new `IteratorEnumeration` that will not function until `setIterator` is invoked.

    - #### IteratorEnumeration

          public IteratorEnumeration(Iterator<? extends E> iterator)

      Constructs a new `IteratorEnumeration` that will use the given iterator.
      Parameters:
        `iterator` - the iterator to use

  - ### Method Detail

    - #### hasMoreElements

          public boolean hasMoreElements()

      Returns true if the underlying iterator has more elements.
      Specified by:
        `hasMoreElements` in interface `Enumeration<E>`
      Returns:
        true if the underlying iterator has more elements

    - #### nextElement

          public E nextElement()

      Returns the next element from the underlying iterator.
      Specified by:
        `nextElement` in interface `Enumeration<E>`
      Returns:
        the next element from the underlying iterator.
      Throws:
        `NoSuchElementException` - if the underlying iterator has no more elements

    - #### getIterator

          public Iterator<? extends E> getIterator()

      Returns the underlying iterator.
      Returns:
        the underlying iterator

    - #### setIterator

          public void setIterator(Iterator<? extends E> iterator)

      Sets the underlying iterator.
      Parameters:
        `iterator` - the new underlying iterator

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