chore: upgrade to Java 19

Use Java 19 and Jetty 12 to take advantage of Project Loom preview
features to reduce CPU usage due to XtextWebDocumentAccess thread pools.

1 files changed, 10 insertions, 9 deletions

diff --git a/README.md b/README.md
index dfb4685e..33d89786 100644
--- a/README.md
+++ b/README.md
@@ -6,27 +6,28 @@
 
 ### With Eclipse IDE
 
-1. Download and install a _Java 17_ compatible JDK. For Windows, prefer OpenJDK builds from [Adoptium](https://adoptium.net/).
+1. Download and install a _Java 19_ compatible JDK. For Windows, prefer OpenJDK builds from [Adoptium](https://adoptium.net/).
 
-2. Download and extract the [Eclipse IDE for Java and DSL Developers 2021-12](https://www.eclipse.org/downloads/packages/release/2021-12/r/eclipse-ide-java-and-dsl-developers) package.
+2. Download and extract the [Eclipse IDE for Java and DSL Developers 2022-09](https://www.eclipse.org/downloads/packages/release/2022-09/r/eclipse-ide-java-and-dsl-developers) package.
 
 3. Launch Eclipse and create a new workspace.
 
-4. Open _Help > Install New Software..._ and install the following software from the _2021-12_ update site:
+4. Open _Help > Install New Software..._ and install the following software from the _2022-09_ update site:
     * _Modeling > Ecore Diagram Editor (SDK)_
 
 5. Open _Help > Eclipse Marketplace_ and install the following software:
     * _EclEmma Java Code Coverage_
+    * _Java 19 Support for Eclipse 2022-09 (4.25)_
     * _SonarLint_
 
 6. Open _Window > Preferences_ and set the following preferences:
     * _General > Workspace > Text file encoding_ should be _UTF-8_.
     * _General > Workspace > New text file line delimiter_ should be _Unix_.
-    * Add the JDK 17 to _Java > Installed JREs_.
-    * Make sure JDK 17 is selected for _JavaSE-17_ at _Java > Installed JREs > Execution Environments_.
+    * Add the JDK 19 to _Java > Installed JREs_.
+    * Make sure JDK 19 is selected for _JavaSE-19_ at _Java > Installed JREs > Execution Environments_.
     * Set _Gradle > Java home_ to the `JAVA_HOME` directory (the directory which contains the `bin` directory) of JDK 17. Here, Buildship will show a yellow warning sign, which can be safely ignored.
-    * Set _Java > Compiler > JDK Compliance > Compiler compliance level_ to _17_. The warning about using Java 16 system libraries during compilation should disappear.
-          
+    * Set _Java > Compiler > JDK Compliance > Compiler compliance level_ to _19_. The warning about using Java 16 system libraries during compilation should disappear.
+
 7. Clone the project Git repository but do not import it into Eclipse yet.
 
 8. Open a new terminal an run `./gradlew prepareEclipse` (`.\gradlew prepareEclipse` on Windows) in the cloned repository.
@@ -36,11 +37,11 @@
 
 9. Select _File > Import... > Gradle > Existing Gradle Project_ and import the cloned repository in Eclipse.
     * Make sure to select the root of the repository (containing this file) as the _Project root directory_ and that the _Gradle distribution_ is _Gradle wrapper_.
-    * If you have previously imported the project into Eclipse, this step will likely fail. In that case, you should remove the projects from Eclipse, run `git clean -fxd` in the repository, and start over from step 8. 
+    * If you have previously imported the project into Eclipse, this step will likely fail. In that case, you should remove the projects from Eclipse, run `git clean -fxd` in the repository, and start over from step 8.
 
 ### With IntelliJ IDEA
 
-It is possible to import the project into IntelliJ IDEA, but it gives no editing help for Xtext (`*.xtext`), MWE2 (`*.mwe2`), and Xtend (`*.xtend`) and Ecore class diagrams (`*.aird`, `*.ecore`, `*.genmodel`). 
+It is possible to import the project into IntelliJ IDEA, but it gives no editing help for Xtext (`*.xtext`), MWE2 (`*.mwe2`), and Xtend (`*.xtend`) and Ecore class diagrams (`*.aird`, `*.ecore`, `*.genmodel`).
 
 ## License