What are the differences between a HashMap and a LinkedList in the Java Collections Framework?

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Accepted Answer

HashMap stores key-value pairs for fast retrieval, while LinkedList maintains an ordered collection of elements.

HashMap allows null values and one null key, while LinkedList allows multiple null elements.
HashMap provides O(1) average time complexity for get and put operations, whereas LinkedList has O(n) for accessing elements.
LinkedList maintains the order of insertion, while HashMap does not guarantee any order.
HashMap is implemented as a hash table, while LinkedList is implemented as a doubly linked list.
Example: HashMap map = new HashMap<>(); map.put('A', 1); LinkedList list = new LinkedList<>(); list.add('A');

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