Java: Difference between revisions

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== JDK options ==

Your default choice should probably be to install <code>~~jdk17~~</code>, which is an alias ~~for <code>openjdk17</code>~~. If you're in a server environment, go for <code>~~jdk17_headless~~</code>. Java 17 is the currently-maintained LTS version of OpenJDK as of ~~March 2021~~.

Your default choice should probably be to install <code>jdk</code>, which is an alias the latest LTS. If you're in a server environment, go for <code>jdk21_headless</code>. Java 21 is the currently-maintained LTS version of OpenJDK as of April 2024.

As you might expect, though, many flavors of Java are available in NixOS.

* OpenJDK, by far the most popular non-Oracle JVM implementation

** <code>~~openjdk8~~[_headless]</code> for a legacy Java 8 VM required by some older apps

** <code>jdk8[_headless]</code> for a legacy Java 8 VM required by some older apps

** <code>~~openjdk17~~[_headless]</code>, the currently-supported LTS version of OpenJDK

** <code>jdk21[_headless]</code>, the currently-supported LTS version of OpenJDK

** <code>~~openjdk19~~[_headless]</code>, the current version of OpenJDK

** <code>jdk22[_headless]</code>, the current version of OpenJDK

* AdoptOpenJDK, prebuilt binaries for OpenJDK

* Temurin, formerly AdoptOpenJDK, prebuilt binaries for OpenJDK

** <code>~~adoptopenjdk~~-bin</code> points to the latest version of ~~AdoptOpenJDK~~, which is version 11 at the time of writing.

** <code>temurin-bin</code> points to the latest version of Temurin, which is version 21 at the time of writing.

** <code>~~adoptopenjdk~~-jre-bin</code> is available if you want to avoid downloading the compiler and only require the runtime environment.

** <code>temurin-jre-bin</code> is available if you want to avoid downloading the compiler and only require the runtime environment.

** <code>adoptopenjdk{,-jre}-openj9-bin-{8,17,19}</code> same, but using [https://en.wikipedia.org/wiki/OpenJ9 Eclipse OpenJ9] instead of HotSpot as its JVM.

* JetBrains JDK (<code>jetbrains.jdk</code>), a fork of OpenJDK with modifications made by JetBrains

* Oracle's JDK (<code>oraclejdk</code>), only version 8 is available.

@@ Line 9: / Line 9: @@
 == JDK options ==
-Your default choice should probably be to install <code>jdk17</code>, which is an alias for <code>openjdk17</code>. If you're in a server environment, go for <code>jdk17_headless</code>. Java 17 is the currently-maintained LTS version of OpenJDK as of March 2021.
+Your default choice should probably be to install <code>jdk</code>, which is an alias the latest LTS. If you're in a server environment, go for <code>jdk21_headless</code>. Java 21 is the currently-maintained LTS version of OpenJDK as of April 2024.
 As you might expect, though, many flavors of Java are available in NixOS.
 * OpenJDK, by far the most popular non-Oracle JVM implementation
-** <code>openjdk8[_headless]</code> for a legacy Java 8 VM required by some older apps
+** <code>jdk8[_headless]</code> for a legacy Java 8 VM required by some older apps
-** <code>openjdk17[_headless]</code>, the currently-supported LTS version of OpenJDK
+** <code>jdk21[_headless]</code>, the currently-supported LTS version of OpenJDK
-** <code>openjdk19[_headless]</code>, the current version of OpenJDK
+** <code>jdk22[_headless]</code>, the current version of OpenJDK
-* AdoptOpenJDK, prebuilt binaries for OpenJDK
+* Temurin, formerly AdoptOpenJDK, prebuilt binaries for OpenJDK
-** <code>adoptopenjdk-bin</code> points to the latest version of AdoptOpenJDK, which is version 11 at the time of writing.
+** <code>temurin-bin</code> points to the latest version of Temurin, which is version 21 at the time of writing.
-** <code>adoptopenjdk-jre-bin</code> is available if you want to avoid downloading the compiler and only require the runtime environment.
+** <code>temurin-jre-bin</code> is available if you want to avoid downloading the compiler and only require the runtime environment.
-** <code>adoptopenjdk{,-jre}-openj9-bin-{8,17,19}</code> same, but using [https://en.wikipedia.org/wiki/OpenJ9 Eclipse OpenJ9] instead of HotSpot as its JVM.
 * JetBrains JDK (<code>jetbrains.jdk</code>), a fork of OpenJDK with modifications made by JetBrains
 * Oracle's JDK (<code>oraclejdk</code>), only version 8 is available.