Data Focused programming with Pattern Matching in Java
summary
Live coding shows Java records, sealed types and pattern matching actually reducing code and bugs: converting a hand-written Person class to a record makes collection lookups return true by providing equals/hashCode automatically and keeps fields immutable despite reflection attempts, while sealed interfaces plus sealed types enable exhaustive switches remove need for default cases. Demos use IntelliJ, switch expressions, record patterns to deconstruct JSON/CSV-like structures and show records make equals/hashCode implicit and pattern matching for instanceof reduces temp variables for concise, declarative data processing.
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chapters (5)
- 0:00Introduction to DOP
- 7:30Working with records
- 23:53Sealed classes
- 36:28Pattern matching
- 45:35Real-world applications
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