how to sort the Collection objects in Java?
What are the ways to remove duplicates from ArrayList?
What is WeakHashMap
What are the methods to make collection thread-safe?
What is the peek()of the Queue interface?
How to join multiple ArrayLists?
What is map. entry In Map?
What is the Properties file in collection?
Sort the Collection objects in Java
A good way to sort Java collection objects is using Comparable and Comparator interfaces. A developer can use Collections.sort(), the elements are sorted based on the order mention in compareTo()
When a developer uses Collections, sort (Comparator), it sorts the objects depend on compare() of the Comparator interface.
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