Java Language Futures - All Aboard Project Amber
summary
Local-variable type inference ships as var in JDK 10 and is limited to locals (not fields or API signatures); the compiler normalizes capture types and forbids inferring the pure null type. Work-in-progress features include data classes (boilerplate generated via a semantic declaration), deconstruction patterns plus pattern-matching that generalizes switch into expressions, and sealed types to enable exhaustiveness checks. Prototypes and prototype repos available in OpenJDK and IntelliJ plugins let developers try them; serialization rework follows from the data-class model.
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chapters (13)
- 0:00Intro
- 1:00Java Evolution
- 4:29Java Principles, circa 2005
- 8:02Project Amber
- 8:27Expanded Type Inference
- 19:32Boilerplate
- 22:43Encapsulation
- 24:57Data Classes
- 27:56Algebraic Data Types
- 28:36Sealed Classes
- 29:29Improved Switch
- 35:36Pattern Matching
- 45:00Improved Serialization
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