The past, present and future of the Java type system
summary
History from Oak to Java 11 traces concrete changes: Java 5 adds generics but uses type erasure so libraries often need Class<T> at runtime (example: Jackson), Java 7 adds diamond for local inference, Java 8 adds lambdas and Java 10 adds local var inference unlocking anonymous-type patterns. Upcoming work targets Project Amber with records and pattern matching plus sealed types, and Project Valhalla with inline/value types aimed at safer immutability and measurable performance gains.
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chapters (7)
- 0:00Start
- 2:32Enums
- 4:37Polymorphic Example of Haskell Code
- 6:25Type Aphasia
- 7:47Diamonds Operator
- 8:37Local Variable Type Inference
- 14:28Valhalla Value Types
