What are the key data structures in Java?
An example of an AI chatbot conversation about Java data structures and their uses.
What are the key data structures in Java?
The key data structures in Java include Arrays, Linked Lists, Stacks, Queues, HashMaps, and Trees.
Can you explain the difference between ArrayList and LinkedList?
Sure! ArrayList is backed by a dynamic array, allowing fast random access, while LinkedList uses a doubly linked list, which is better for insertions and deletions.
When should I use a HashMap?
Use a HashMap when you need fast lookups, insertions, and deletions based on key-value pairs, especially when the order of elements is not important.
What is a TreeSet and how does it differ from a HashSet?
A TreeSet is a NavigableSet that stores elements in a sorted order, while a HashSet does not maintain any order.
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