public final class UnmodifiableMap extends AbstractMapDecorator implements IterableMap, Unmodifiable, Serializable
Map
to ensure it can't be altered.
This class is Serializable from Commons Collections 3.1.
map
Modifier and Type | Method and Description |
---|---|
void |
clear() |
static Map |
decorate(Map map)
Factory method to create an unmodifiable map.
|
Set |
entrySet() |
Set |
keySet() |
MapIterator |
mapIterator()
Obtains a
MapIterator over the map. |
Object |
put(Object key,
Object value) |
void |
putAll(Map mapToCopy) |
Object |
remove(Object key) |
Collection |
values() |
containsKey, containsValue, equals, get, getMap, hashCode, isEmpty, size, toString
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
containsKey, containsValue, equals, get, hashCode, isEmpty, size
public static Map decorate(Map map)
map
- the map to decorate, must not be nullIllegalArgumentException
- if map is nullpublic void clear()
clear
in interface Map
clear
in class AbstractMapDecorator
public Object put(Object key, Object value)
put
in interface Map
put
in class AbstractMapDecorator
public void putAll(Map mapToCopy)
putAll
in interface Map
putAll
in class AbstractMapDecorator
public Object remove(Object key)
remove
in interface Map
remove
in class AbstractMapDecorator
public MapIterator mapIterator()
IterableMap
MapIterator
over the map.
A map iterator is an efficient way of iterating over maps. There is no need to access the entry set or cast to Map Entry objects.
IterableMap map = new HashedMap(); MapIterator it = map.mapIterator(); while (it.hasNext()) { Object key = it.next(); Object value = it.getValue(); it.setValue("newValue"); }
mapIterator
in interface IterableMap
public Set entrySet()
entrySet
in interface Map
entrySet
in class AbstractMapDecorator
public Set keySet()
keySet
in interface Map
keySet
in class AbstractMapDecorator
public Collection values()
values
in interface Map
values
in class AbstractMapDecorator
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