Class MultiIterator

  • All Implemented Interfaces:
    java.util.Iterator

    public class MultiIterator
    extends java.lang.Object
    implements java.util.Iterator
    An iterator that combines the results of a sequence of iterators
    • Constructor Summary

      Constructors 
      Constructor Description
      MultiIterator​(java.util.Iterator[] array)
      Create an iterator that concatenates a number of supplied iterators
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      boolean hasNext()
      Returns true if the iteration has more elements.
      java.lang.Object next()
      Returns the next element in the iteration.
      void remove()
      Removes from the underlying collection the last element returned by the iterator (optional operation).
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
      • Methods inherited from interface java.util.Iterator

        forEachRemaining
    • Constructor Detail

      • MultiIterator

        public MultiIterator​(java.util.Iterator[] array)
        Create an iterator that concatenates a number of supplied iterators
        Parameters:
        array - the iterators to be concatenated
    • Method Detail

      • hasNext

        public boolean hasNext()
        Returns true if the iteration has more elements. (In other words, returns true if next would return an element rather than throwing an exception.)
        Specified by:
        hasNext in interface java.util.Iterator
        Returns:
        true if the iterator has more elements.
      • next

        public java.lang.Object next()
        Returns the next element in the iteration.
        Specified by:
        next in interface java.util.Iterator
        Returns:
        the next element in the iteration.
        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 (optional operation). 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.
        Specified by:
        remove in interface java.util.Iterator
        Throws:
        java.lang.UnsupportedOperationException - if the remove operation is not supported by this Iterator.
        java.lang.IllegalStateException - if the next method has not yet been called, or the remove method has already been called after the last call to the next method.