Upgrade to Java 22

Author: jonatan-ivanov

.github/workflows/gradle.yml

@@ -12,11 +12,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: actions/setup-java@v3
+    - uses: actions/setup-java@v4
       with:
         distribution: 'liberica'
         java-version: |
-          17
+          22
           21
     - name: Validate Gradle wrapper
       uses: gradle/wrapper-validation-action@v1

build.gradle

@@ -27,7 +27,7 @@ apply from: 'gradle/docker.gradle'
 
 java {
     toolchain {
-        languageVersion = JavaLanguageVersion.of(21)
+        languageVersion = JavaLanguageVersion.of(22)
     }
 }
 

gradle/runtime.gradle

@@ -39,8 +39,8 @@ ext.debugJvmArgs = [
 
 version = grgit ? "${grgit.head().abbreviatedId}.${Instant.now().epochSecond}" : (System.env.SOURCE_VERSION ?: '0.0.0-UNKNOWN')
 
-bootRun {
-    jvmArgs += commonJvmArgs + jmxJvmArgs + debugJvmArgs
-}
+bootRun.jvmArgs += commonJvmArgs + jmxJvmArgs + debugJvmArgs
+// TODO: remove this once the Boot Gradle Plugin works with Java 22
+springBoot.mainClass = 'resourceater.ResourceaterApplication'
 
 mkdir 'logs' // The JVM is not able to start if the GC logs folder does not exists :(