Senior Associate QA L1 Interview Questions and Answers

Explanation of collections and difference between them, with focus on hashmap.

• Collections are data structures that store and manipulate groups of objects.

• ArrayList, LinkedList, HashSet, and TreeMap are some examples of collections.

• HashMap is a collection that stores key-value pairs and allows for fast retrieval of values based on their keys.

• HashMap uses hashing to store and retrieve values, while TreeMap uses a red-black tree.

• HashMap allows for null values and keys, while Tre...read more