SealedClasses

Series Posts

Part 6: Java 14 & 15: Records, Text Blocks, and Sealed Classes

Java 14 finalised switch expressions and previewed records and pattern matching for instanceof. Java 15 made text blocks production-ready, introduced sealed classes in preview, and delivered the long-awaited helpful NullPointerExceptions. Together they laid the groundwork for modern Java's data-oriented programming model.

Conceptual Java Evolution: From 8 to 25

Part 7: Java 16 & 17: The Modern LTS Baseline

Java 16 finalised records and pattern matching for instanceof. Java 17 became the new LTS release, finalising sealed classes and introducing pattern matching for switch in preview. Together they define the modern Java baseline that most teams target today.