Which Java Collection class allows generic elements to be stored in a sorted order?Question 3Answera.ArrayListb.PriorityQueuec.TreeMapd.HashSet

The correct answer is: c. TreeMap

Explanation

• ArrayList: This class does not maintain a sorted order of its elements; it allows dynamic resizing but does not sort.
• PriorityQueue: This class allows elements to be stored in a priority order (not necessarily sorted like a TreeMap), but it does not allow access to elements in a sorted order directly.
• TreeMap: This class implements a navigable map that maintains keys in a sorted order. It allows for generic elements to be stored in a manner that keeps them sorted based on their natural ordering or by a specified comparator.
• HashSet: This class does not maintain any order of its elements; it provides no guarantee of the iteration order.

Therefore, the Collection class that allows generic elements to be stored in a sorted order is TreeMap.