Slk Software Services Team Lead Interview Questions and Answers for Experienced

Hashmap is unordered while LinkedHashmap maintains insertion order.

• Hashmap uses hashing to store key-value pairs while LinkedHashmap uses a doubly linked list to maintain order.

• Hashmap allows null values and one null key while LinkedHashmap does not allow null keys or values.

• Hashmap has O(1) time complexity for basic operations while LinkedHashmap has O(1) for insertion and deletion but O(n) for iteration.

• Example: Hash...read more