What is HashTable in Java? (Java Collections)

******************** Java HashTable:
It inherits Dictionary class.
It implements Map interface.
Hashtable stores key/value pairs in a hash table
HashTable has its values in a bucket.
The position of the bucket is identified using hashcode().
It can contain only unique values.
It is Synchronized.
It may not have a null value or key.
Concrete implementation of a Dictionary

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