Object | getKey() Gets the current key, which is the key returned by the last call to next(). |
Object | getValue() Gets the current value, which is the value associated with the last key returned by next(). |
boolean | hasNext() Checks to see if there are more entries still to be iterated. |
Object | next() Gets the next key from the Map. |
void | remove() Removes the last returned key from the underlying Map (optional operation). |
Object | setValue(Object value) Sets the value associated with the current key (optional operation). |
public Object getKey()
next()
.
- if next() has not yet been calledpublic Object getValue()
next()
.
- if next() has not yet been calledpublic boolean hasNext()
public Object next()
Map
.
- if the iteration is finishedpublic void remove()
Map
(optional operation).
This method can be called once per call to next()
.
- if remove is not supported by the map
- if next() has not yet been called
- if remove() has already been called
since the last call to next()public Object setValue(Object value)
- if setValue is not supported by the map
- if next() has not yet been called
- if remove() has been called since the
last call to next()
Map
. This iterator is a special version designed for maps. It can be more efficient to use this rather than an entry set iterator where the option is available, and it is certainly more convenient. A map that provides this interface may not hold the data internally using Map Entry objects, thus this interface can avoid lots of object creation. In use, this iterator iterates through the keys in the map. After each call tonext()
, thegetValue()
method provides direct access to the value. The value can also be set usingsetValue()
.