Programming with Streams in Java 8
summary
Shows how Java 8 Stream API transforms a List<Person> into results: using filter→map→collect to produce uppercase names of females over 18 (transcript example returns Sarah and Paula from eight people), using map+reduce to total ages (example total 212), and switching to parallelStream for concurrency. Emphasizes lazy fused pipeline semantics (no intermediates), explains the bug of mutating an external list with forEach and the correct pattern collect(Collectors.toList()) that avoids race conditions and lets the runtime optimize and parallelize safely.
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chapters (8)
- 0:00Start
- 0:32Create Person
- 6:08Cohesion
- 30:33Function Composition
- 40:39Map Is a Transformation
- 49:25Parallelism
- 52:26Specialized Functions
- 57:42Concurrency Synchronization
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