Package org.eclipse.net4j.util.collection

Class AbstractIterator<T>

java.lang.Object
org.eclipse.net4j.util.collection.AbstractIterator<T>
All Implemented Interfaces:
Iterator<T>
Direct Known Subclasses:
AbstractCloseableIterator, AbstractFilteredIterator, AbstractListIterator, ComposedIterator
public abstract class AbstractIterator<T> extends Object implements Iterator<T>
An abstract base class for custom iterators that only requires to implement a single computeNextElement() method.
Since:
3.2
Author:
Eike Stepper

  • Field Details

    • END_OF_DATA

      protected static final Object END_OF_DATA
      The token to be used in computeNextElement() to indicate the end of the iteration.

  • Constructor Details

    • AbstractIterator

      public AbstractIterator()

  • Method Details

    • hasNext

      public final boolean hasNext()
      Specified by:
      hasNext in interface Iterator<T>

    • next

      public final T next()
      Specified by:
      next in interface Iterator<T>

    • remove

      public void remove()
      Specified by:
      remove in interface Iterator<T>

    • computeNextElement

      protected abstract Object computeNextElement()
      Returns the next iteration element, or END_OF_DATA if the end of the iteration has been reached.

    • empty

      public static <T> ListIterator<T> empty()
      Since:
      3.4