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Oracle® Coherence Java API Reference
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## com.tangosol.util
Class NullImplementation.NullEnumerator

    java.lang.Object
      com.tangosol.util.NullImplementation.NullEnumerator

All Implemented Interfaces:
  java.util.Enumeration, java.util.Iterator

Enclosing class:
  NullImplementation

    public static class NullImplementation.NullEnumerator

extends java.lang.Object
implements java.util.Enumeration, java.util.Iterator

An empty enumerator.

Field Summary
`static NullImplementation.NullEnumerator` | `INSTANCE` Since the enumerator contains no information, only one ever has to exist.

Method Summary
`boolean` | `hasMoreElements()` Tests if this enumeration contains more elements.
`boolean` | `hasNext()` Returns true if the iteration has more elements.
`java.lang.Object` | `next()` Returns the next element in the interation.
`java.lang.Object` | `nextElement()` Returns the next element of this enumeration if this enumeration object has at least one more element to provide.
`void` | `remove()` Removes from the underlying Collection the last element returned by the Iterator .

Field Detail

### INSTANCE

    public static final NullImplementation.NullEnumerator INSTANCE

  Since the enumerator contains no information, only one ever has to exist.

Method Detail

### hasMoreElements

    public boolean hasMoreElements()

  Tests if this enumeration contains more elements.

  Specified by:
    `hasMoreElements` in interface `java.util.Enumeration`
  Returns:
    false

### nextElement

    public java.lang.Object nextElement()

  Returns the next element of this enumeration if this enumeration object has at least one more element to provide.

  Specified by:
    `nextElement` in interface `java.util.Enumeration`
  Returns:
    the next element of this enumeration.
  Throws:
    `java.util.NoSuchElementException` - always

### hasNext

    public boolean hasNext()

  Returns true if the iteration has more elements.

  Specified by:
    `hasNext` in interface `java.util.Iterator`

### next

    public java.lang.Object next()

  Returns the next element in the interation.

  Specified by:
    `next` in interface `java.util.Iterator`
  Throws:
    `java.util.NoSuchElementException` - iteration has no more elements.

### remove

    public void remove()

  Removes from the underlying Collection the last element returned by the Iterator . This method can be called only once per call to next The behavior of an Iterator is unspecified if the underlying Collection is modified while the iteration is in progress in any way other than by calling this method. Optional operation.

  Specified by:
    `remove` in interface `java.util.Iterator`
  Throws:
    `java.lang.IllegalStateException` - next has not yet been called, or remove has already been called after the last call to next.

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Oracle® Coherence Java API Reference
v3.5.3
E15583-01
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