Class AbstractMapIteratorDecorator<K,V>

Type Parameters:
K - the type of keys
V - the type of mapped values
All Implemented Interfaces:
Iterator<K>, MapIterator<K,V>

public class AbstractMapIteratorDecorator<K,V> extends Object implements MapIterator<K,V>
Provides basic behavior for decorating a map iterator with extra functionality.

All methods are forwarded to the decorated map iterator.

  • Constructor Details

  • Method Details

    • getKey

      public K getKey()
      Gets the current key, which is the key returned by the last call to next().
      Specified by:
      getKey in interface MapIterator<K,V>
      the current key
    • getMapIterator

      protected MapIterator<K,V> getMapIterator()
      Gets the iterator being decorated.
      the decorated iterator
    • getValue

      public V getValue()
      Gets the current value, which is the value associated with the last key returned by next().
      Specified by:
      getValue in interface MapIterator<K,V>
      the current value
    • hasNext

      public boolean hasNext()
      Checks to see if there are more entries still to be iterated.
      Specified by:
      hasNext in interface Iterator<K>
      Specified by:
      hasNext in interface MapIterator<K,V>
      true if the iterator has more elements
    • next

      public K next()
      Gets the next key from the Map.
      Specified by:
      next in interface Iterator<K>
      Specified by:
      next in interface MapIterator<K,V>
      the next key in the iteration
    • remove

      public void remove()
      Removes the last returned key from the underlying Map (optional operation).

      This method can be called once per call to next().

      Specified by:
      remove in interface Iterator<K>
      Specified by:
      remove in interface MapIterator<K,V>
    • setValue

      public V setValue(V obj)
      Sets the value associated with the current key (optional operation).
      Specified by:
      setValue in interface MapIterator<K,V>
      obj - the new value
      the previous value