Pharmaspectra Interview Questions and Answers

String is immutable because it ensures data integrity and thread safety.

• Immutable strings prevent accidental modification of data.

• Immutable strings allow for efficient memory management.

• Immutable strings enable safe sharing of data across multiple threads.

• Immutable strings support string interning for better performance.

• Immutable strings facilitate the use of string literals for optimization.

Hashmap and Hashset are used to store and retrieve data efficiently.

• Hashmap is used to store key-value pairs, allowing fast retrieval of values based on keys.

• Hashset is used to store unique elements, allowing fast membership checks.

• Both data structures provide constant time complexity for insertion, deletion, and retrieval operations.

• Hashmap and Hashset are widely used in various programming scenarios, such as caching,