public class EntrySetMapIterator extends java.lang.Object implements MapIterator, ResettableIterator
MapIterator
using a Map entrySet.
Reverse iteration is not supported.
MapIterator it = map.mapIterator(); while (it.hasNext()) { Object key = it.next(); Object value = it.getValue(); it.setValue(newValue); }
Constructor and Description |
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EntrySetMapIterator(java.util.Map map)
Constructor.
|
Modifier and Type | Method and Description |
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java.lang.Object |
getKey()
Gets the current key, which is the key returned by the last call
to
next() . |
java.lang.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.
|
java.lang.Object |
next()
Gets the next key from the
Map . |
void |
remove()
Removes the last returned key from the underlying
Map . |
void |
reset()
Resets the state of the iterator.
|
java.lang.Object |
setValue(java.lang.Object value)
Sets the value associated with the current key.
|
java.lang.String |
toString()
Gets the iterator as a String.
|
public EntrySetMapIterator(java.util.Map map)
map
- the map to iterate overpublic boolean hasNext()
hasNext
in interface java.util.Iterator
hasNext
in interface MapIterator
true
if the iterator has more elementspublic java.lang.Object next()
Map
.next
in interface java.util.Iterator
next
in interface MapIterator
java.util.NoSuchElementException
- if the iteration is finishedpublic void remove()
Map
.
This method can be called once per call to next()
.
remove
in interface java.util.Iterator
remove
in interface MapIterator
java.lang.UnsupportedOperationException
- if remove is not supported by the mapjava.lang.IllegalStateException
- if next()
has not yet been calledjava.lang.IllegalStateException
- if remove()
has already been called
since the last call to next()
public java.lang.Object getKey()
next()
.getKey
in interface MapIterator
java.lang.IllegalStateException
- if next()
has not yet been calledpublic java.lang.Object getValue()
next()
.getValue
in interface MapIterator
java.lang.IllegalStateException
- if next()
has not yet been calledpublic java.lang.Object setValue(java.lang.Object value)
setValue
in interface MapIterator
value
- the new valuejava.lang.UnsupportedOperationException
- if setValue is not supported by the mapjava.lang.IllegalStateException
- if next()
has not yet been calledjava.lang.IllegalStateException
- if remove()
has been called since the
last call to next()
public void reset()
reset
in interface ResettableIterator
public java.lang.String toString()
toString
in class java.lang.Object
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