Package com.google.common.collect

Class 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 (imported from Google Collections Library)

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      protected ForwardingIterator()
      Constructor for use by subclasses.

    • Method Summary

      All Methods Instance Methods Abstract Methods Concrete Methods 
      Modifier and Type Method 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 java.lang.Object

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

      • Methods inherited from interface java.util.Iterator

        forEachRemaining

    • 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>