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1. • Can’t support preview features from earlier releases

     • Because of their high quality, different JDK implementations must include all preview features planned within each Java delivery. However, a Java release still can’t support preview features from earlier releases.
     www.baeldung.com/java-preview-features

     Java Preview Features | Baeldung

2. People also ask

   Can a Java release support preview features from earlier releases?

   • However, a Java release still can’t support preview features from earlier releases. Preview features are essentially just a way to encourage the community to review and provide feedback. Moreover, not every Java feature must go through a preview stage in order to become final. Here’s what JEP-12 has to say about preview features:

   Java Preview Features | Baeldung

   www.baeldung.com/java-preview-features

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   What is a Java preview feature?

   • To avoid such a risk, a specific JEP ( JEP 12) (along with Informational JEP ), offer the ability to preview new Java language and Java API features. A preview feature is one that is believed to be fully specified and implemented but may still change before it is included in the Java platform on a final and permanent basis.

   Using the Preview Features Available in the JDK - Dev.java

   dev.java/learn/new-features/using-preview/

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   How to enable preview features in Java 12?

   • Some of the new features are available only as a preview. To enable them, we need to switch proper settings in the IDE or explicitly tell the compiler to use preview features: 3.1. Switch Expressions (Preview) The most popular feature introduced in Java 12 is the Switch Expressions.

   New Features in Java 12 | Baeldung

   www.baeldung.com/java-12-new-features

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   How to enable a preview feature in JDK 13?

   • To enable them, we must use the enable-preview argument, which enables all preview features at once. The Java compiler, as well as the JVM, must be of the same Java version that includes the preview feature we want to use. Let’s try to compile and run a piece of code that uses text blocks, a preview feature within JDK 13: SELECT 'Hello World'

   Java Preview Features | Baeldung

   www.baeldung.com/java-preview-features

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   Does ECLiPSe support enable-preview?

   • As we are supporting --enable-preview feature for only the latest release of java, [...] Today I learnt, that Eclipse uses ejc Java compiler and not JDK's javac and that causes the impossibility of supporting enable preview according to compiler compilance. So many years using it, but with incorrect imagination of it :-)

   How to enable preview features for Java 14 in Eclipse 2020-12?

   stackoverflow.com/questions/65810167/how-to-enable-preview-features-for-java-14-in-eclipse-2020-12

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   What's new in Java 21?

   • Oracle released Java 21 on September 19, 2023. It’s the latest Java LTS release after Java 17. This article will discuss the new features and enhancements added to Java 21. 2. List of JEPs Let’s talk about the notable enhancements introduced to the language in Java 21 through various Java Enhancement Proposals (JEP). 2.1. Record Patterns ( JEP 440)

   New Features in Java 21 | Baeldung

   www.baeldung.com/java-lts-21-new-features

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3. www.baeldung.com › java-preview-featuresJava Preview Features | Baeldung

   www.baeldung.com › java-preview-features

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   Jan 16, 2024 · In this article, we’ve introduced preview features in Java, why we have them, and how they differ from experimental features. Then, using the text blocks preview feature in JDK 13, we explained step by step how to use preview features from Eclipse, IntelliJ, Maven, and the command line.

4. dev.java › learn › new-featuresUsing the Preview Features Available in the JDK - Dev.java

   dev.java › learn › new-features

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   Preview features are specific to a given Java feature release and require the use of special flags at compile time as well as at runtime. The example below shows how to use preview features based on a feature that was in preview in Java 16 .

5. docs.oracle.com › en › javaPreview Features

   docs.oracle.com › en › java

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   Code that uses preview features from an older release of the Java SE Platform will not necessarily compile or run on a newer release. The tools jshell and javadoc also support the --enable-preview command-line option.

6. stackoverflow.com › questions › 65810167How to enable preview features for Java 14 in Eclipse 2020-12?

   stackoverflow.com › questions › 65810167

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   Jan 20, 2021 · No, that's not possible. Only the preview features of the highest supported Java version are supported. Which means, Eclipse 2020-12 (4.18) supports preview features of Java 15 only, not of Java 14.

7. www.infoworld.com › article › 3714933JDK 23: The new features in Java 23 | InfoWorld

   www.infoworld.com › article › 3714933

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   Jun 6, 2024 · The feature set for Java Development Kit (JDK) 23, the next planned version of standard Java, has been finalized at an even dozen. A proposed third preview of string templates, which was also...

8. www.baeldung.com › java-lts-21-new-featuresNew Features in Java 21 | Baeldung

   www.baeldung.com › java-lts-21-new-features

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   Apr 12, 2024 · 1. Overview. Oracle released Java 21 on September 19, 2023. It’s the latest Java LTS release after Java 17. This article will discuss the new features and enhancements added to Java 21. 2. List of JEPs. Let’s talk about the notable enhancements introduced to the language in Java 21 through various Java Enhancement Proposals (JEP). 2.1.

9. www.baeldung.com › java-12-new-featuresNew Features in Java 12 | Baeldung

   www.baeldung.com › java-12-new-features

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   Jan 16, 2024 · Some of the new features are available only as a preview. To enable them, we need to switch proper settings in the IDE or explicitly tell the compiler to use preview features: javac -Xlint:preview --enable-preview -source 12 src/main/java/File.java