com.google.common.collect

## Class ForwardingIterator<T>

- java.lang.Object
- - com.google.common.collect.ForwardingObject
  - - com.google.common.collect.ForwardingIterator<T>

- All Implemented Interfaces:
    java.util.Iterator<T>
  Direct Known Subclasses:
    ForwardingListIterator

      @GwtCompatible
      public abstract class ForwardingIterator<T>
      extends ForwardingObject
      implements java.util.Iterator<T>

  An iterator which forwards all its method calls to another iterator. Subclasses should override one or more methods to modify the behavior of the backing iterator as desired per the decorator pattern.
  Since:
    2.0

- - ### Constructor Summary

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `protected` | `ForwardingIterator()` Constructor for use by subclasses.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `protected abstract java.util.Iterator<T>` | `delegate()` Returns the backing delegate instance that methods are forwarded to.
    `boolean` | `hasNext()`
    `T` | `next()`
    `void` | `remove()`

    - ### Methods inherited from class com.google.common.collect.ForwardingObject

      `toString`

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

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

- - ### Constructor Detail

    - #### ForwardingIterator

          protected ForwardingIterator()

      Constructor for use by subclasses.

  - ### Method Detail

    - #### delegate

          protected abstract java.util.Iterator<T> delegate()

      Description copied from class: `ForwardingObject`
      Returns the backing delegate instance that methods are forwarded to. Abstract subclasses generally override this method with an abstract method that has a more specific return type, such as `ForwardingSet.delegate()`. Concrete subclasses override this method to supply the instance being decorated.
      Specified by:
        `delegate` in class `ForwardingObject`

    - #### hasNext

          public boolean hasNext()

      Specified by:
        `hasNext` in interface `java.util.Iterator<T>`

    - #### next

          public T next()

      Specified by:
        `next` in interface `java.util.Iterator<T>`

    - #### remove

          public void remove()

      Specified by:
        `remove` in interface `java.util.Iterator<T>`