Java 8 Parallel Streams: Interview Questions and Performance Tips scholarhat.com

Parallel streams allow parallel processing of data using multiple cores. Java 8 interview questions may include: “What are parallel streams?”, “How do they differ from sequential streams?”, and “When should you avoid parallel streams?” This article explains the internals of parallel streams, the ForkJoinPool, and performance trade-offs. You’ll also learn when parallel streams can cause more harm than good. This topic is great to demonstrate your understanding of performance optimization and multi-threading in Java 8.