java.util
Class Collections.UnmodifiableMap

java.lang.Object
  |
  +--java.util.Collections.UnmodifiableMap
Direct Known Subclasses:
Collections.UnmodifiableSortedMap
private static class Collections.UnmodifiableMap
extends Object
implements Map, Serializable

See Also:
Serialized Form

Inner Class Summary
(package private) static class Collections.UnmodifiableMap.UnmodifiableEntrySet
          We need this class in addition to UnmodifiableSet as Map.Entries themselves permit modification of the backing Map via their setValue operation.
 
Field Summary
private  Set entrySet
           
private  Set keySet
           
private  Map m
           
private  Collection values
           
 
Constructor Summary
(package private) Collections.UnmodifiableMap(Map m)
           
 
Method Summary
 void clear()
           
 boolean containsKey(Object key)
           
 boolean containsValue(Object val)
           
 Set entrySet()
           
 boolean equals(Object o)
           
 Object get(Object key)
           
 int hashCode()
           
 boolean isEmpty()
           
 Set keySet()
           
 Object put(Object key, Object value)
           
 void putAll(Map t)
           
 Object remove(Object key)
           
 int size()
           
 Collection values()
           
 
Methods inherited from class java.lang.Object
, clone, finalize, getClass, notify, notifyAll, registerNatives, toString, wait, wait, wait
 

Field Detail

m

private final Map m

keySet

private transient Set keySet

entrySet

private transient Set entrySet

values

private transient Collection values
Constructor Detail

Collections.UnmodifiableMap

Collections.UnmodifiableMap(Map m)
Method Detail

size

public int size()
Specified by:
size in interface Map

isEmpty

public boolean isEmpty()
Specified by:
isEmpty in interface Map

containsKey

public boolean containsKey(Object key)
Specified by:
containsKey in interface Map

containsValue

public boolean containsValue(Object val)
Specified by:
containsValue in interface Map

get

public Object get(Object key)
Specified by:
get in interface Map

put

public Object put(Object key,
                  Object value)
Specified by:
put in interface Map

remove

public Object remove(Object key)
Specified by:
remove in interface Map

putAll

public void putAll(Map t)
Specified by:
putAll in interface Map

clear

public void clear()
Specified by:
clear in interface Map

keySet

public Set keySet()
Specified by:
keySet in interface Map

entrySet

public Set entrySet()
Specified by:
entrySet in interface Map

values

public Collection values()
Specified by:
values in interface Map

equals

public boolean equals(Object o)
Specified by:
equals in interface Map
Overrides:
equals in class Object

hashCode

public int hashCode()
Specified by:
hashCode in interface Map
Overrides:
hashCode in class Object