← Exit to Module 10: Functional Programming and Streams lessons
Module progress · 0%Lesson · 20 min
Module 10: Functional Programming and Streams
Lesson focusIntermediate Operations
Chain filter, map, flatMap, distinct, sorted, and peek effectively.
01 · 15 minLambda Syntax VariationsLocked02 · 18 minBuilt-in Functional InterfacesLocked03 · 16 minStream Creation StrategiesLocked04 · 20 minIntermediate OperationsLocked05 · 22 minTerminal Operations & CollectorsLocked06 · 18 minCollectors In DepthLocked07 · 15 minParallel Streams BasicsLocked08 · 14 minFunctional Best PracticesLocked09 · 35 minMini-Project: Data Analysis with StreamsLocked
filter retains elements matching a predicate; map transforms each element; flatMap flattens nested streams.
Use peek for debugging only—it should not mutate state in production pipelines.
distinct relies on equals/hashCode; sorted can accept custom comparators via lambdas or method references.