org.apache.commons.collections15.map
Class UnmodifiableMap<K,V>
java.lang.Object
org.apache.commons.collections15.map.AbstractMapDecorator<K,V>
org.apache.commons.collections15.map.UnmodifiableMap<K,V>
- All Implemented Interfaces:
- Serializable, Map<K,V>, IterableMap<K,V>, Unmodifiable
public final class UnmodifiableMap<K,V>
- extends AbstractMapDecorator<K,V>
- implements IterableMap<K,V>, Unmodifiable, Serializable
Decorates another Map to ensure it can't be altered.
This class is Serializable from Commons Collections 3.1.
- Since:
- Commons Collections 3.0
- Version:
- $Revision: 1.1 $ $Date: 2005/10/11 17:05:32 $
- Author:
- Matt Hall, John Watkinson, Stephen Colebourne
- See Also:
- Serialized Form
| Nested classes/interfaces inherited from interface java.util.Map |
Map.Entry<K,V> |
decorate
public static <K,V> Map<K,V> decorate(Map<K,V> map)
- Factory method to create an unmodifiable map.
- Parameters:
map - the map to decorate, must not be null
- Throws:
IllegalArgumentException - if map is null
clear
public void clear()
- Specified by:
clear in interface Map<K,V>- Overrides:
clear in class AbstractMapDecorator<K,V>
put
public V put(K key,
V value)
- Specified by:
put in interface Map<K,V>- Overrides:
put in class AbstractMapDecorator<K,V>
putAll
public void putAll(Map<? extends K,? extends V> mapToCopy)
- Specified by:
putAll in interface Map<K,V>- Overrides:
putAll in class AbstractMapDecorator<K,V>
remove
public V remove(Object key)
- Specified by:
remove in interface Map<K,V>- Overrides:
remove in class AbstractMapDecorator<K,V>
mapIterator
public MapIterator<K,V> mapIterator()
- Description copied from interface:
IterableMap
- Obtains a
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");
}
- Specified by:
mapIterator in interface IterableMap<K,V>
- Returns:
- a map iterator
entrySet
public Set<Map.Entry<K,V>> entrySet()
- Specified by:
entrySet in interface Map<K,V>- Overrides:
entrySet in class AbstractMapDecorator<K,V>
keySet
public Set<K> keySet()
- Specified by:
keySet in interface Map<K,V>- Overrides:
keySet in class AbstractMapDecorator<K,V>
values
public Collection<V> values()
- Specified by:
values in interface Map<K,V>- Overrides:
values in class AbstractMapDecorator<K,V>
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