Question
You can determine all the keys in a Map in which of the following ways?
- A. Getting a Set object from the Map and iterating through it.
- B. Iterating through the Iterator of the Map.
- C. Enumerating through the Enumeration of the Map.
- D. Getting a List from the Map and enumerating through the List.
- E. You cannot determine the keys in a Map.
A.
Note
The key and value pairs in Map does not have a sequence, therefore you cannot get a List from them.
A Map contains a Set, which is a list that does not allow duplicates.
Once you acquire the Set you can iterate through the keys.
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