Modern Java in Action • Nicolai Parlog • GOTO 2024

Records provide a concise way to create immutable data classes with automatically generated constructors, accessors, equals/hashCode methods

Sealed interfaces/classes restrict which types can implement/extend them, providing better type safety and pattern matching capabilities

Virtual threads enable high scalability by allowing many concurrent operations without using actual OS threads

Structured concurrency helps manage multiple concurrent tasks by organizing them in hierarchical task scopes that handle cleanup

HTTP client API (since JDK 11) provides a modern way to make HTTP requests with features like async operations and configurable timeouts

Pattern matching with switch expressions allows cleaner type-based control flow compared to instanceof checks

Modern Java features enable clear separation between domain model (using records) and operations (using sealed interfaces)

Simple file server and web server APIs are now included in the JDK for basic development needs

String templates and unmodifiable collections (via List.of, Set.of etc.) improve code readability and safety

Compact constructors in records allow validation while keeping the concise syntax