Sailing Java 16
summary
Java 16 shows concrete changes: pattern matching with instanceof removes repetitive casts and creates scoped local bindings (JEP 394), records as named tuples generate private final fields, accessors, canonical constructor, equals/hashCode/toString and can be local types (JEP 395), and sealed classes (preview) let a type list permitted heirs to restrict inheritance (JEP 397). JDK now illegal-access=deny by default (strongly encapsulate JDK internals, JEP 396) so setAccessible calls break unless code adds opens or migrates; value-based classes warn constructors for removal; demos run with a few failing live examples.
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chapters (7)
- 0:00Introduction to Java 16
- 5:45Strongly encapsulating JDK internals
- 13:17Pattern matching with instanceof
- 18:18Sealed classes introduction
- 24:14Warnings for value-based classes
- 30:31Records deep dive
- 38:43Q&A and closing remarks
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