JAVA / JAVA COLLECTIONS FRAMEWORK /
MAP

Interface for storing key-value pairs.

All keys are unique, no duplications.

Each key is associated to a single value.

The Map contains of 3 sets:

• set of keys

• set of values

• set of key-value associations (mapping)

Implementing classes: HashMap, EnumMap, LinkedHashMap, WeakHashMap, TreeMap.

Extending interfaces: SortedMap, NavigableMap, ConcurrentMap.

EXAMPLE FOR CREATING AN INSTANCE BY USING ONE OF THE SUBCLASSES OF MAP:

All methods of the Collection interface is available. Specific methods follow.

EXAMPLE FOR REPLACEALL():

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