Package freemarker.ext.util
Class IdentityHashMap
- java.lang.Object
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- java.util.AbstractMap
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- freemarker.ext.util.IdentityHashMap
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Cloneable
,java.util.Map
@Deprecated public class IdentityHashMap extends java.util.AbstractMap implements java.util.Map, java.lang.Cloneable, java.io.Serializable
Deprecated.UseIdentityHashMap
instead.Was used instead ofIdentityHashMap
before that was added to Java itself in Java 1.4.- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description static long
serialVersionUID
Deprecated.
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Constructor Summary
Constructors Constructor Description IdentityHashMap()
Deprecated.Constructs a new, empty map with a default capacity and load factor, which is 0.75.IdentityHashMap(int initialCapacity)
Deprecated.Constructs a new, empty map with the specified initial capacity and default load factor, which is 0.75.IdentityHashMap(int initialCapacity, float loadFactor)
Deprecated.Constructs a new, empty map with the specified initial capacity and the specified load factor.IdentityHashMap(java.util.Map t)
Deprecated.Constructs a new map with the same mappings as the given map.
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description void
clear()
Deprecated.Removes all mappings from this map.java.lang.Object
clone()
Deprecated.Returns a shallow copy of this IdentityHashMap instance: the keys and values themselves are not cloned.boolean
containsKey(java.lang.Object key)
Deprecated.Returns true if this map contains a mapping for the specified key.boolean
containsValue(java.lang.Object value)
Deprecated.Returns true if this map maps one or more keys to the specified value.java.util.Set
entrySet()
Deprecated.Returns a collection view of the mappings contained in this map.java.lang.Object
get(java.lang.Object key)
Deprecated.Returns the value to which this map maps the specified key.boolean
isEmpty()
Deprecated.Returns true if this map contains no key-value mappings.java.util.Set
keySet()
Deprecated.Returns a set view of the keys contained in this map.java.lang.Object
put(java.lang.Object key, java.lang.Object value)
Deprecated.Associates the specified value with the specified key in this map.void
putAll(java.util.Map t)
Deprecated.Copies all of the mappings from the specified map to this one.java.lang.Object
remove(java.lang.Object key)
Deprecated.Removes the mapping for this key from this map if present.int
size()
Deprecated.Returns the number of key-value mappings in this map.java.util.Collection
values()
Deprecated.Returns a collection view of the values contained in this map.
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Field Detail
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serialVersionUID
public static final long serialVersionUID
Deprecated.- See Also:
- Constant Field Values
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Constructor Detail
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IdentityHashMap
public IdentityHashMap(int initialCapacity, float loadFactor)
Deprecated.Constructs a new, empty map with the specified initial capacity and the specified load factor.- Parameters:
initialCapacity
- the initial capacity of the IdentityHashMap.loadFactor
- the load factor of the IdentityHashMap- Throws:
java.lang.IllegalArgumentException
- if the initial capacity is less than zero, or if the load factor is nonpositive.
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IdentityHashMap
public IdentityHashMap(int initialCapacity)
Deprecated.Constructs a new, empty map with the specified initial capacity and default load factor, which is 0.75.- Parameters:
initialCapacity
- the initial capacity of the IdentityHashMap.- Throws:
java.lang.IllegalArgumentException
- if the initial capacity is less than zero.
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IdentityHashMap
public IdentityHashMap()
Deprecated.Constructs a new, empty map with a default capacity and load factor, which is 0.75.
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IdentityHashMap
public IdentityHashMap(java.util.Map t)
Deprecated.Constructs a new map with the same mappings as the given map. The map is created with a capacity of twice the number of mappings in the given map or 11 (whichever is greater), and a default load factor, which is 0.75.- Parameters:
t
- the map whose mappings are to be placed in this map.
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Method Detail
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size
public int size()
Deprecated.Returns the number of key-value mappings in this map.- Specified by:
size
in interfacejava.util.Map
- Overrides:
size
in classjava.util.AbstractMap
- Returns:
- the number of key-value mappings in this map.
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isEmpty
public boolean isEmpty()
Deprecated.Returns true if this map contains no key-value mappings.- Specified by:
isEmpty
in interfacejava.util.Map
- Overrides:
isEmpty
in classjava.util.AbstractMap
- Returns:
- true if this map contains no key-value mappings.
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containsValue
public boolean containsValue(java.lang.Object value)
Deprecated.Returns true if this map maps one or more keys to the specified value.- Specified by:
containsValue
in interfacejava.util.Map
- Overrides:
containsValue
in classjava.util.AbstractMap
- Parameters:
value
- value whose presence in this map is to be tested.- Returns:
- true if this map maps one or more keys to the specified value.
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containsKey
public boolean containsKey(java.lang.Object key)
Deprecated.Returns true if this map contains a mapping for the specified key.- Specified by:
containsKey
in interfacejava.util.Map
- Overrides:
containsKey
in classjava.util.AbstractMap
- Parameters:
key
- key whose presence in this Map is to be tested.- Returns:
- true if this map contains a mapping for the specified key.
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get
public java.lang.Object get(java.lang.Object key)
Deprecated.Returns the value to which this map maps the specified key. Returns null if the map contains no mapping for this key. A return value of null does not necessarily indicate that the map contains no mapping for the key; it's also possible that the map explicitly maps the key to null. The containsKey operation may be used to distinguish these two cases.- Specified by:
get
in interfacejava.util.Map
- Overrides:
get
in classjava.util.AbstractMap
- Parameters:
key
- key whose associated value is to be returned.- Returns:
- the value to which this map maps the specified key.
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put
public java.lang.Object put(java.lang.Object key, java.lang.Object value)
Deprecated.Associates the specified value with the specified key in this map. If the map previously contained a mapping for this key, the old value is replaced.- Specified by:
put
in interfacejava.util.Map
- Overrides:
put
in classjava.util.AbstractMap
- Parameters:
key
- key with which the specified value is to be associated.value
- value to be associated with the specified key.- Returns:
- previous value associated with specified key, or null if there was no mapping for key. A null return can also indicate that the IdentityHashMap previously associated null with the specified key.
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remove
public java.lang.Object remove(java.lang.Object key)
Deprecated.Removes the mapping for this key from this map if present.- Specified by:
remove
in interfacejava.util.Map
- Overrides:
remove
in classjava.util.AbstractMap
- Parameters:
key
- key whose mapping is to be removed from the map.- Returns:
- previous value associated with specified key, or null if there was no mapping for key. A null return can also indicate that the map previously associated null with the specified key.
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putAll
public void putAll(java.util.Map t)
Deprecated.Copies all of the mappings from the specified map to this one. These mappings replace any mappings that this map had for any of the keys currently in the specified Map.- Specified by:
putAll
in interfacejava.util.Map
- Overrides:
putAll
in classjava.util.AbstractMap
- Parameters:
t
- Mappings to be stored in this map.
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clear
public void clear()
Deprecated.Removes all mappings from this map.- Specified by:
clear
in interfacejava.util.Map
- Overrides:
clear
in classjava.util.AbstractMap
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clone
public java.lang.Object clone()
Deprecated.Returns a shallow copy of this IdentityHashMap instance: the keys and values themselves are not cloned.- Overrides:
clone
in classjava.util.AbstractMap
- Returns:
- a shallow copy of this map.
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keySet
public java.util.Set keySet()
Deprecated.Returns a set view of the keys contained in this map. The set is backed by the map, so changes to the map are reflected in the set, and vice versa. The set supports element removal, which removes the corresponding mapping from this map, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations.- Specified by:
keySet
in interfacejava.util.Map
- Overrides:
keySet
in classjava.util.AbstractMap
- Returns:
- a set view of the keys contained in this map.
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values
public java.util.Collection values()
Deprecated.Returns a collection view of the values contained in this map. The collection is backed by the map, so changes to the map are reflected in the collection, and vice versa. The collection supports element removal, which removes the corresponding mapping from this map, via the Iterator.remove, Collection.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations.- Specified by:
values
in interfacejava.util.Map
- Overrides:
values
in classjava.util.AbstractMap
- Returns:
- a collection view of the values contained in this map.
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entrySet
public java.util.Set entrySet()
Deprecated.Returns a collection view of the mappings contained in this map. Each element in the returned collection is a Map.Entry. The collection is backed by the map, so changes to the map are reflected in the collection, and vice versa. The collection supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Collection.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations.- Specified by:
entrySet
in interfacejava.util.Map
- Specified by:
entrySet
in classjava.util.AbstractMap
- Returns:
- a collection view of the mappings contained in this map.
- See Also:
Map.Entry
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