java.lang.Object
- org.apache.commons.collections.map.AbstractMapDecorator
- - org.apache.commons.collections.map.UnmodifiableMap

All Implemented Interfaces:

Serializable, Map, IterableMap, Unmodifiable
```
public final class UnmodifiableMap
extends AbstractMapDecorator
implements IterableMap, 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: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $

Author:

Stephen Colebourne

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from interface java.util.Map
  Map.Entry<K extends Object,V extends Object>

Field Summary
- Fields inherited from class org.apache.commons.collections.map.AbstractMapDecorator
  map

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	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()`

Methods inherited from class org.apache.commons.collections.map.AbstractMapDecorator
containsKey, containsValue, equals, get, getMap, hashCode, isEmpty, size, toString

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, equals, forEach, get, getOrDefault, hashCode, isEmpty, merge, putIfAbsent, remove, replace, replace, replaceAll, size

- Method Detail
  - decorate
```
public static Map decorate(Map 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
    
    Overrides:
    
    clear in class AbstractMapDecorator
  - put
```
public Object put(Object key,
                  Object value)
```
    Specified by:
    
    put in interface Map
    
    Overrides:
    
    put in class AbstractMapDecorator
  - putAll
```
public void putAll(Map mapToCopy)
```
    Specified by:
    
    putAll in interface Map
    
    Overrides:
    
    putAll in class AbstractMapDecorator
  - remove
```
public Object remove(Object key)
```
    Specified by:
    
    remove in interface Map
    
    Overrides:
    
    remove in class AbstractMapDecorator
  - mapIterator
```
public MapIterator 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
    
    Returns:
    
    a map iterator
  - entrySet
```
public Set entrySet()
```
    Specified by:
    
    entrySet in interface Map
    
    Overrides:
    
    entrySet in class AbstractMapDecorator
  - keySet
```
public Set keySet()
```
    Specified by:
    
    keySet in interface Map
    
    Overrides:
    
    keySet in class AbstractMapDecorator
  - values
```
public Collection values()
```
    Specified by:
    
    values in interface Map
    
    Overrides:
    
    values in class AbstractMapDecorator

Class UnmodifiableMap

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Field Summary

Fields inherited from class org.apache.commons.collections.map.AbstractMapDecorator

Method Summary

Methods inherited from class org.apache.commons.collections.map.AbstractMapDecorator

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Map

Method Detail

decorate

clear

put

putAll

remove

mapIterator

entrySet

keySet

values