Pluralsight.Java.SE.Foundations.Collections.2026.BOOKWARE-GETH

Processing queues and deques Pietro Cascio Senior Software Engineer Producer-consumer pipeline Queue vs. List: Different contracts List (Array-like) Queue (FIFO) • Random index access • Access only from the ends • No ordering contract • FIFO ordering enforced • Flexible but risky • Clear contract Choosing a collection is choosing an operational promise Queue: the FIFO contract FIFO guarantee No index confusion Explicit intent First in, first out. API prevents random The entire team No exceptions