🎓 Java9 Study

• Java9 의 기능들을 예제 중심으로 테스트 해보기
• 기능 별 참고자료를 통한 스터디

Module System (Jigsaw) - 1주차

• 필요한 모듈만 사용해 경량회된 이미지를 만드는 방법

Java Module 설명

Reactive Streams - 2주차

• 스트리밍으로 비동기 데이터를 처리하는 표준

https://www.baeldung.com/java-9-reactive-streams https://www.journaldev.com/20723/java-9-reactive-streams

HTTP 2 Client(With Java11) - 3주차

• HTTP 2 클라이언트 지원

https://www.baeldung.com/java-9-http-client

REPL (Read Eval Print Loop) - JShell - 4주차

• 소스코드를 빠르게 테스트 할 수 있는 문장 해석 도구

https://www.baeldung.com/java-9-repl https://www.journaldev.com/9879/java-repl-jshell https://www.journaldev.com/12938/jshell-java-shell

Factory Methods for Immutable List, Set, Map and Map.Entry - 4주차

• 변경 불가능한 Collection 인스턴스를 생성하는 Factory Method 를 제공

https://www.baeldung.com/java-9-collections-factory-methods https://www.journaldev.com/12942/javase9-factory-methods-immutable-list https://www.journaldev.com/12984/javase9-factories-for-immutable-set https://www.journaldev.com/13057/javase9-factory-methods-immutable-map

Milling Project Coin - 4주차

• 조그마한 언어적 변화들

1. Allow @SafeVargs on private instance methods

   https://www.baeldung.com/java-safevarargs

2. try-with-resources improvements

   https://www.journaldev.com/12940/javase9-try-with-resources-improvements

3. Allow diamond with anonymous classes

   https://www.tutorialspoint.com/java9/java9_inner_class_diamond_operator.htm

4. Underscore Changes

   https://www.journaldev.com/13563/javase9-underscore-changes

5. private methods in interface

   https://www.journaldev.com/12850/java-9-private-methods-interfaces

Stream API, CompletableFuture API, Optional Class Improvements - 4주차

• API 개선 및 강화

1. Stream

   https://www.journaldev.com/13204/javase9-stream-api-improvements

2. CompletableFuture

   https://www.baeldung.com/java-9-completablefuture

3. Optional Class

   https://www.journaldev.com/13108/javase9-optional-class-improvements https://www.baeldung.com/java-9-optional