Data Oriented Programming with the JDK 19
summary
JDK 19/20 introduce records that auto-generate final fields, accessors, equals/hashCode/toString and support canonical and compact constructors for validation; record deserialization invokes the canonical constructor, closing a serialization-validation bypass. Pattern matching (preview) lets code deconstruct records in instanceof, switch and for-each to remove casts, make switches exhaustive when combined with sealed types, and bind nested components directly. Many features (record patterns, nested patterns, for-each patterns) are preview in JDK 19–20; instanceof pattern is final since JDK 16 and other pattern kinds (arrays, deconstructors) are planned.
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chapters (7)
- 0:00Introduction to Java
- 3:06Data-oriented Programming
- 6:10Understanding Java Records
- 14:55Records and Serialization
- 23:53Introduction to Pattern Matching
- 34:05Pattern Matching in Switch
- 44:37Future Java Pattern Matching
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