Answer Posted / brijendra kumar soni(xavient)

1-Hashmap is nonSyncronized whereas Hastable is Syncronized.

2-Hashmap allows both key and values are Null whereas
Hastable doesnot allow Null values.

3-Hasmap belongs to Collection package whereas Hashtable is
a class.

4-The class Hashmap implements the map interface whereas
Hastable implements the class.

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