From acb45a1dea61dd844fba839cc31c79a7aca4bbe4 Mon Sep 17 00:00:00 2001
From: Fabian Mastenbroek <mail.fabianm@gmail.com>
Date: Fri, 4 Nov 2022 16:53:22 +0100
Subject: build: Increase minimum Java version to Java 17

This change updates the Gradle configuration to target Java 17 (instead
of Java 11) as the lowest denominator when running/building OpenDC. This
version of Java has been available for more than a year and is the
latest LTS release.
---
 .github/workflows/build.yml                 | 4 ++--
 .github/workflows/release.yml               | 1 -
 .github/workflows/test-gradle-rc.yml        | 3 ++-
 .github/workflows/test-java-ea.yml          | 3 ++-
 buildSrc/src/main/kotlin/Libs.kt            | 2 +-
 site/docs/advanced-guides/toolchain.md      | 2 +-
 site/docs/getting-started/0-installation.md | 2 +-
 7 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0747ad33..79bbe4d9 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -13,10 +13,10 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        java: [ 11, 17, 18 ]
+        java: [ 17, 19 ]
         include:
           - os: windows-latest
-            java: 18
+            java: 19
     steps:
       - name: Checkout repository
         uses: actions/checkout@v3
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2d893edf..73ec0a4d 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -26,7 +26,6 @@ jobs:
         with:
           arguments: publish
         env:
-          ORG_GRADLE_PROJECT_signingKeyId: F8134F9C
           ORG_GRADLE_PROJECT_signingKey: ${{ secrets.GPG_PRIVATE_KEY }}
           ORG_GRADLE_PROJECT_signingPassword: ${{ secrets.GPG_PASSPHRASE }}
           ORG_GRADLE_PROJECT_ossrhUsername: ${{ secrets.OSSRH_USERNAME }}
diff --git a/.github/workflows/test-gradle-rc.yml b/.github/workflows/test-gradle-rc.yml
index a39d36d7..b58bbcb1 100644
--- a/.github/workflows/test-gradle-rc.yml
+++ b/.github/workflows/test-gradle-rc.yml
@@ -11,8 +11,9 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: 'zulu'
-          java-version: 18
+          java-version: 19
       - uses: gradle/gradle-build-action@v2
         with:
+          cache-disabled: true
           gradle-version: release-candidate
           arguments: build --dry-run # just test build configuration
diff --git a/.github/workflows/test-java-ea.yml b/.github/workflows/test-java-ea.yml
index f3c31928..d0324b1b 100644
--- a/.github/workflows/test-java-ea.yml
+++ b/.github/workflows/test-java-ea.yml
@@ -11,8 +11,9 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: 'zulu'
-          java-version: 19-ea
+          java-version: 20-ea
       - uses: gradle/gradle-build-action@v2
         with:
+          cache-disabled: true
           gradle-version: release-candidate
           arguments: build
diff --git a/buildSrc/src/main/kotlin/Libs.kt b/buildSrc/src/main/kotlin/Libs.kt
index 6a73e1b9..97dc36ca 100644
--- a/buildSrc/src/main/kotlin/Libs.kt
+++ b/buildSrc/src/main/kotlin/Libs.kt
@@ -50,6 +50,6 @@ public class Libs(project: Project) {
         /**
          * The JVM version to target.
          */
-        val jvmTarget = JavaVersion.VERSION_11
+        val jvmTarget = JavaVersion.VERSION_17
     }
 }
diff --git a/site/docs/advanced-guides/toolchain.md b/site/docs/advanced-guides/toolchain.md
index 36efece7..a1735767 100644
--- a/site/docs/advanced-guides/toolchain.md
+++ b/site/docs/advanced-guides/toolchain.md
@@ -22,7 +22,7 @@ Follow the steps below to get it all set up!
 
 ## 1. Installing Java
 
-OpenDC requires a Java installation of version 11 or higher. Make sure to install
+OpenDC requires a Java installation of version 17 or higher. Make sure to install
 the [JDK](https://www.oracle.com/technetwork/java/javase/downloads/index.html), not only the JRE (the JDK also includes
 a JRE).
 
diff --git a/site/docs/getting-started/0-installation.md b/site/docs/getting-started/0-installation.md
index 2747c344..9b9b0e82 100644
--- a/site/docs/getting-started/0-installation.md
+++ b/site/docs/getting-started/0-installation.md
@@ -14,7 +14,7 @@ quicker.
 1. **Supported Platforms**  
    OpenDC is actively tested on Windows, macOS and GNU/Linux.
 2. **Required Software**  
-   A Java installation of version 11 or higher is required for OpenDC. You may download the
+   A Java installation of version 17 or higher is required for OpenDC. You may download the
    [Java distribution from Oracle](https://www.oracle.com/java/technologies/downloads/) or use the distribution provided
    by your package manager.
 
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