Type Parameters:
K - the type of keys maintained by this map
V - the type of mapped values
All Implemented Interfaces:
Map<K,V>
Direct Known Subclasses:
ConcurrentHashMap, ConcurrentSkipListMap, EnumMap, HashMap, IdentityHashMap, TreeMap, WeakHashMap

  • Nested Class Summary

    Nested Classes

    static class 

    An Entry maintaining a key and a value.

    static class 

    An unmodifiable Entry maintaining a key and a value.

    Nested classes/interfaces declared in interface Map

    Map.Entry<K,V>

  • Constructor Summary

    Constructors

  • Method Summary

    void

    clear()

    Removes all of the mappings from this map (optional operation).

    clone()

    Returns a shallow copy of this AbstractMap instance: the keys and values themselves are not cloned.

    boolean

    Returns true if this map contains a mapping for the specified key.

    boolean

    Returns true if this map maps one or more keys to the specified value.

    boolean

    Compares the specified object with this map for equality.

    Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.

    int

    hashCode()

    Returns the hash code value for this map.

    boolean

    isEmpty()

    Returns true if this map contains no key-value mappings.

    keySet()

    Returns a Set view of the keys contained in this map.

    put(K key, V value)

    Associates the specified value with the specified key in this map (optional operation).

    void

    putAll(Map<? extends K, ? extends V> m)

    Copies all of the mappings from the specified map to this map (optional operation).

    Removes the mapping for a key from this map if it is present (optional operation).

    int

    size()

    Returns the number of key-value mappings in this map.

    toString()

    Returns a string representation of this map.

    values()

    Returns a Collection view of the values contained in this map.

  • Constructor Details

    • AbstractMap

  • Method Details

    • size

    • isEmpty

    • containsValue

    • containsKey

    • get

    • put

    • remove

    • putAll

    • clear

    • keySet

    • values

    • equals

    • hashCode

    • toString

    • clone