what is the difference between HashMap and Hashtable
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Answer Posted / ashad
Hash Table is a legacy Class Whereas HashMap belongs to the
collections package.
HashMap allows null key and values..but it allows only one
null key and multiple null values...Whereas the HashTable
wont allow the null key and values..
HashMap allows only one null key, basic idea behind it is
that key can have unique value only if one null is assigned
to a key next null will be duplicate.
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