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|Java - Interview Questions and Answers|
|Ans. We can have duplicate keys within MultiMap whereas we cannot have duplicate keys within Java Util Map.|
We can have a Map with value as a "collection of values" instead of single value to have a similar function as Multimap.
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|Like Discuss Correct / Improve  Apache commons multimap  map vs multimap|
|Can you provide some implementation of a Dictionary having large number of words ?|
|Difference between TreeMap and HashMap ?|
|Difference between HashMap and Hashtable?|
| Collections.sort can only be performed on ..|
d. Any Collection implementation
| What is the difference between List, Set and Map ?|
What are the different Java Collections Interfaces ?
|What is a ConcurrentHashMap ?|
| Which of the following collections stores its elements in insertion Order ? |
|Which of the following doesn't extend Collection interface ?|
|Why HashTable has been deprecated ?|
|Can we use null as a key for a map collection ?|