4 docs tagged with "streams"

Java's built-in Collector implementations — toList, groupingBy, partitioningBy, joining, toMap, counting, and how to build custom collectors.

Consolidated interview Q&A for Java Functional Programming — lambdas, functional interfaces, method references, streams, collectors, parallel streams, and Optional.

When parallel streams improve throughput, when they hurt, and how the ForkJoin common pool governs parallel execution.

How Java streams work — pipeline anatomy, lazy evaluation, intermediate vs. terminal operations, and common pitfalls.