Reduces pause times by performing evacuation work concurrently. Hidden Classes
Sealed classes and interfaces restrict which other classes may extend or implement them. Provides better control over inheritance. Useful for domain modeling and pattern matching. Syntax: public sealed class Shape permits Circle, Square {} Text Blocks (Finalized) Multiline string literals are now standard. Eliminates the need for most escape sequences. Automatically manages indentation. Uses triple quotes: """ ... """ . EdDSA (Edwards-Curve Digital Signature Algorithm) JDK 15: The new features in Java 15
JDK 15 was released in September 2020 as a short-term feature release. It focused on finalizing major syntax enhancements and improving JVM performance. 🚀 Top Production Features Useful for domain modeling and pattern matching
Both low-latency Garbage Collectors are now production-ready. Scalable, low-latency (sub-millisecond) GC. Automatically manages indentation
A new platform-independent implementation of the EdDSA signature scheme. Higher security and performance. Found in the java.security package. 🛠️ JVM and Tooling Improvements ZGC and Shenandoah (Finalized)
These features graduated from "preview" or "experimental" status to being permanent parts of the language. Sealed Classes (First Preview)