Tech News

https://jdk.java.net/15/release-notes

https://openjdk.java.net/projects/jdk/15/

https://www.jrebel.com/blog/guide-java-15

Features

339:	Edwards-Curve Digital Signature Algorithm (EdDSA)
360:	Sealed Classes (Preview)
371:	Hidden Classes
372:	Remove the Nashorn JavaScript Engine
373:	Reimplement the Legacy DatagramSocket API
374:	Disable and Deprecate Biased Locking
375:	Pattern Matching for instanceof (Second Preview)
377:	ZGC: A Scalable Low-Latency Garbage Collector
378:	Text Blocks
379:	Shenandoah: A Low-Pause-Time Garbage Collector
381:	Remove the Solaris and SPARC Ports
383:	Foreign-Memory Access API (Second Incubator)
384:	Records (Second Preview)
385:	Deprecate RMI Activation for Removal

- Text Blocks : 멀티 라인 문자열 지원
- Unicode 13.0 지원
- Hidden Class / Sealed Class

2nd Preview
- Records : 데이터 클래스
- instanceof 의 패턴 매칭 지원

2nd Incubator
- Foreign-Memory Access API - Java Heap 외부의 메모리 접근