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Java Programming - Objects and Collections - Discussion

@ : Home > Java Programming > Objects and Collections > General Questions - Discussion

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"Weakness of attitude becomes weakness of character."
- Albert Einstein
Ashok said: (Mon, Jun 6, 2011 06:05:25 AM)    
 
I think its wrong because as the question is like collection that don't allow duplicate elements not the keys, so it must be option D.

Chandra said: (Tue, Jun 14, 2011 07:22:10 AM)    
 
Map allow duplicates but I will overide with previous value. So we can, t say duplicate keys not allow.

Dave Hampton said: (Wed, Dec 7, 2011 05:14:11 PM)    
 
The question is ambiguous. It does not refer to 'unique keys' - it just states 'no duplicates'. You can in fact have duplicate object values in a Map referenced by different keys. The answer to the question as it stands is java.util.Set which translates to answer D as it's not listed.

Saroj Kumar Das said: (Wed, Mar 14, 2012 09:56:31 PM)    
 
See Map don't contain duplicate keys but it contain duplicate values, it may be uses HashMap. I think the answer is D.

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