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2018-11-27
 Cologne / JVM-Con 2018 Java 10, 11, 12, and beyond Michael Vitz https://pixabay.com/en/coffee-beans-blue-red-caffeine-1599262/ @michaelvitz #jvmcon18

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Michael Vitz
 Senior Consultant at INNOQ • Build, run, and maintain JVM applications • JavaSPEKTRUM column owner • ❤ Clojure

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www.innoq.com OFFICES Monheim Berlin Offenbach Munich Zurich FACTS ~125 employees Privately owned Vendor-independent SERVICES Strategy & technology consulting Digital business models Software architecture & development Digital platforms & infrastructures Knowledge transfer, coaching & trainings CLIENTS Finance Telecommunications Logistics E-commerce Fortune 500 SMBs Startups

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Vote https://pixabay.com/en/audience-crowd-event-cheer-945449/

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JDK 10 https://pixabay.com/en/number-ad-yellow-color-asphalt-437928/

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http://openjdk.java.net/projects/jdk/10/

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http://openjdk.java.net/projects/jdk/10/

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JEP286: Local-Variable Type Inference var Cheat Sheet: https://snyk.io/blog/local-type-inference-java-cheat-sheet/ Style Guidelines: http://openjdk.java.net/projects/amber/LVTIstyle.html http://openjdk.java.net/jeps/286

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JEP322:Time-Based Release Versioning [1-9][0-9]*((\.0)*\.[1-9][0-9]*)* http://openjdk.java.net/jeps/322

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More small enhancements • @summary • • List#copyOf, Map#copyOf, Set#copyOf • Collectors#toUnmodifiableList/Set/Map • Optional::orElseThrow https://bugs.openjdk.java.net/browse/JDK-8173425 https://bugs.openjdk.java.net/browse/JDK-8146115 https://bugs.openjdk.java.net/browse/JDK-8177290 https://bugs.openjdk.java.net/browse/JDK-8184690 https://bugs.openjdk.java.net/browse/JDK-8140281

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JDK 11 https://pixabay.com/en/pool-balls-billiard-eleven-eight-1003955/

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http://openjdk.java.net/projects/jdk/11/

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http://openjdk.java.net/projects/jdk/11/

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http://openjdk.java.net/jeps/320 JEP320: Remove the Java EE and CORBA Modules

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JEP321: HTTP Client http://openjdk.java.net/jeps/321 HttpClient client = HttpClient.newHttpClient(); HttpRequest request = HttpRequest.newBuilder() .uri(URI.create("http://openjdk.java.net/")) .build(); client.sendAsync(request, ofString()) .thenApply(HttpResponse::body) .thenAccept(System.out::println) .join(); http://openjdk.java.net/groups/net/httpclient/intro.html

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JEP323: Local-Variable Syntax for Lambda Parameters http://openjdk.java.net/jeps/323 (@Nonnull var x) -> process(x)

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JEP330: Launch Single-File Source-Code Programs http://openjdk.java.net/jeps/330 javac Foo.java \ && java Foo \ && rm Foo.class

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java.io • java.io.FileReader(java.lang.String, java.nio.charset.Charset) • java.io.FileWriter(java.lang.String, java.nio.charset.Charset) • java.io.InputStream#nullInputStream • java.io.OutputStream#nullOutputStream • java.io.Reader#nullReader • java.io.Writer#nullWriter

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java.lang.String • String::repeat(int) • String::lines • String::strip, String::stripLeading, String::stripTrailing • String::isBlank https://bugs.openjdk.java.net/browse/JDK-8197594 https://bugs.openjdk.java.net/browse/JDK-8200380 https://bugs.openjdk.java.net/browse/JDK-8200377 https://bugs.openjdk.java.net/browse/JDK-8200436

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java.util.Optional/Predicate • Optional::isEmpty • Predicate#not https://bugs.openjdk.java.net/browse/JDK-8184693 https://bugs.openjdk.java.net/browse/JDK-8050818

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java.nio.file.Files/Path • Files#isSameContent • Files#readString, Files#writeString • Path#of(URI), Path#of(String, String…) https://bugs.openjdk.java.net/browse/JDK-8202302 https://bugs.openjdk.java.net/browse/JDK-8202055 https://bugs.openjdk.java.net/browse/JDK-8199485

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java.lang.Character/CharSequence • Character#toString(int) • CharSequence#compare(CharSequence, CharSequence) https://bugs.openjdk.java.net/browse/JDK-8198837 https://bugs.openjdk.java.net/browse/JDK-8195867

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java.util.regex.Pattern • Pattern::asMatchPredicate https://bugs.openjdk.java.net/browse/JDK-8201308

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java.lang.Thread • Thread::stop(Throwable), Thread::destroy https://bugs.openjdk.java.net/browse/JDK-8204243

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Distribution License Support

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https://www.oracle.com/technetwork/java/javase/downloads/jdk11-downloads-5066655.html

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http://www.oracle.com/technetwork/java/eol-135779.html

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http://www.oracle.com/technetwork/java/eol-135779.html

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http://www.oracle.com/technetwork/java/eol-135779.html

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http://www.oracle.com/technetwork/java/javaseproducts/overview/javasesubscriptionfaq-4891443.html

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http://jdk.java.net/11/

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https://adoptopenjdk.net

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https://developers.redhat.com/blog/2018/09/24/the-future-of-java-and-openjdk-updates-without-oracle-support/

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https://www.azul.com/downloads/zulu/

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https://www.azul.com/products/zulu-and-zulu-enterprise/zulu-enterprise-java-support-options

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https://azure.microsoft.com/de-de/blog/microsoft-and-azul-systems-bring-free-java-lts-support-to-azure/

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https://aws.amazon.com/corretto/

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JDK 12 https://pixabay.com/en/gate-wrought-iron-iron-number-3267016/

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http://openjdk.java.net/projects/jdk/12/

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JEP325: Switch Expressions http://openjdk.java.net/jeps/325 int numLetters = switch (day) { case MONDAY, FRIDAY, SUNDAY -> 6; case TUESDAY -> 7; case THURSDAY, SATURDAY -> 8; case WEDNESDAY -> 9; };

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JEP326: Raw String Literals http://openjdk.java.net/jeps/326 String query = `` SELECT `EMP_ID`, `LAST_NAME` FROM `EMPLOYEE_TB` WHERE `CITY` = 'INDIANAPOLIS' ORDER BY `EMP_ID`, `LAST_NAME`; ``;

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API Changes • {@systemProperty} • Files#mismatch(Path, Path) https://bugs.openjdk.java.net/browse/JDK-5076751 https://bugs.openjdk.java.net/browse/JDK-8202302

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Future https://pixabay.com/en/binoculars-looking-man-discovery-1209011/

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Project Amber https://pixabay.com/en/heart-amber-pendant-necklace-1202129/

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http://openjdk.java.net/projects/amber/

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JEP302: Lambda Leftovers http://openjdk.java.net/jeps/302 BiFunction biss = (i, _) -> String.valueOf(i); Map msi = ... ... String key = computeSomeKey(); msi.computeIfAbsent(key, key -> key.length()) Optional: Better disambiguation for functional expression

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JEP305: Pattern Matching http://openjdk.java.net/jeps/305 String formatted; switch (obj) { case Integer i: formatted = String.format("int %d", i); break; case Byte b: formatted = String.format("byte %d", b); break; case Long l: formatted = String.format("long %d", l); break; case Double d: formatted = String.format("double %f", l); break; case String s: formatted = String.format("String %s", s); break; default: formatted = obj.toString(); }

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JEP draft: Concise Method Bodies http://openjdk.java.net/jeps/8209434 // -> is "single expression form" int length(String s) -> s.length(); // = is "method reference form" int length(String s) = String::length;

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Project Loom https://pixabay.com/en/craftsman-loom-craftsmanship-hands-1839920/

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http://openjdk.java.net/projects/loom/

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Project Valhalla https://pixabay.com/en/tunnel-passage-underpass-light-965720/

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http://openjdk.java.net/projects/valhalla/

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JEP169: Value Objects http://openjdk.java.net/jeps/169

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JEP218: Generics over Primitive Types http://openjdk.java.net/jeps/218 class Box { } new Box();

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JEP3: JDK Release Process http://openjdk.java.net/jeps/3

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JEP12: Preview Language and VM Features http://openjdk.java.net/jeps/12

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JEP 346: Promptly Return Unused Committed Memory from G1 http://openjdk.java.net/jeps/346

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JEP draft: Better hash codes http://openjdk.java.net/jeps/8201462

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JEP draft: Lazy Static Final Fields http://openjdk.java.net/jeps/8209964 private final static Logger LOGGER = Logger.getLogger(“com.foo.Bar");

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www.innoq.com innoQ Deutschland GmbH Krischerstr. 100 40789 Monheim am Rhein Germany +49 2173 3366-0 Ohlauer Str. 43 10999 Berlin Germany +49 2173 3366-0 Ludwigstr. 180E 63067 Offenbach Germany +49 2173 3366-0 Kreuzstr. 16 80331 München Germany +49 2173 3366-0 innoQ Schweiz GmbH Gewerbestr. 11 CH-6330 Cham Switzerland +41 41 743 0116 Thanks! Questions? Michael Vitz [email protected] michaelvitz +49 151 19116015 https://www.innoq.com/de/talks/2018/11/jvm-con-2018-java10-11-12/