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Hashset, Hashmap, Hashtable

 
Greenhorn
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Hi all,

What is the difference between Hashset, Hashmap, Hashtable?

Thanx in advance.
 
Ranch Hand
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From the javadoc of HashMap:

(The HashMap class is roughly equivalent to Hashtable, except that it is unsynchronized and permits nulls.)

As for the HashSet, it is a class that uses hash values to store objects, but obeys the Set contract to not allow duplicate objects.
 
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