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Map can’t be instantiated as it is an interface. For creation of the Map interface instance, concrete implementation is required. Map interface has these concrete implementations which are present in Collection API.

• java.util.HashMap
• java.util.Hashtable
• java.util.EnumMap
• java.util.IdentityHashMap
• java.util.LinkedHashMap
• java.util.Properties
• java.util.TreeMap
• java.util.WeakHashMap

Map implementations which ...

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Hashmap