The New Features In Java 15 - Jdk 15:

Both low-latency Garbage Collectors are now production-ready. Scalable, low-latency (sub-millisecond) GC.

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) JDK 15: The new features in Java 15

These features graduated from "preview" or "experimental" status to being permanent parts of the language. Sealed Classes (First Preview) Both low-latency Garbage Collectors are now production-ready

Allows Java programs to safely and efficiently access arbitrary memory outside of the Java heap. Found in jdk.incubator.foreign . 🧹 Deprecations and Removals Completely removed. RMI Activation: Deprecated for future removal. Solaris and SPARC Ports: Support officially removed. Biased Locking: Disabled by default and deprecated. Higher security and performance

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 made Java more readable with Text Blocks and more efficient with the finalization of the ZGC and Shenandoah garbage collectors.