Replace Java 19 by 21 (LTS) in CI

.github/workflows/continuous-integration.yaml

@@ -23,7 +23,9 @@ jobs:
         java:
           - '11'
           - '17'
-          - '19'
+          - '21'
+        distribution:
+          - 'temurin'
         os:
           - ubuntu-latest
           - macos-latest
@@ -34,7 +36,7 @@ jobs:
           fetch-depth: 1
       - uses: actions/setup-java@v3
         with:
-          distribution: temurin
+          distribution: ${{ matrix.distribution }}
           java-version: ${{ matrix.java }}
       - name: Build
         run: |
@@ -50,7 +52,9 @@ jobs:
         java:
           - '11'
           - '17'
-          - '19'
+          - '21'
+        distribution:
+          - 'temurin'
         os:
           - windows-latest
     runs-on: ${{ matrix.os }}
@@ -60,7 +64,7 @@ jobs:
           fetch-depth: 1
       - uses: actions/setup-java@v3
         with:
-          distribution: temurin
+          distribution: ${{ matrix.distribution }}
           java-version: ${{ matrix.java }}
       - name: Assemble
         shell: cmd
@@ -100,10 +104,11 @@ jobs:
         java:
           - '11'
           - '17'
+          - '21'
         os:
           - ubuntu-latest
         maven:
-          - '3.9.1'
+          - '3.9.4'
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3

CHANGELOG.adoc

@@ -74,6 +74,7 @@ Build Improvement::
 * Removed pollutedTest Gradle task using junit-pioneer (#1193) (@abelsromero)
 * Ignore 'docs/**' changes in CI (#1225) (@abelsromero)
 * Add test for ensuring that asciidoctor version is available in CLI (#1230) (@abelsromero)
+* Run tests on Java 21 (#1236) (@abelsromero)
 
 Documentation::
 

asciidoctorj-springboot-integration-test/springboot-app/build.gradle

@@ -2,7 +2,7 @@ import org.gradle.nativeplatform.platform.internal.DefaultNativePlatform
 import org.springframework.boot.gradle.plugin.SpringBootPlugin
 
 plugins {
-	id 'org.springframework.boot' version '3.1.0'
+	id 'org.springframework.boot' version '3.1.5'
 	id 'java'
 }
 
@@ -31,8 +31,8 @@ java {
 
 def getToolchainVersion() {
 	if (DefaultNativePlatform.getCurrentOperatingSystem().isWindows()) {
-		if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_19))
-			return 19
+		if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_21))
+			return 21
 	}
 	return 17
 }

build.gradle

@@ -240,8 +240,8 @@ configure(subprojects.findAll { !it.name.endsWith('-distribution') && ! it.name.
 // Windows workaround to fix invalid toolchain detection
 def getToolchainVersion() {
   if (DefaultNativePlatform.getCurrentOperatingSystem().isWindows()) {
-    if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_19))
-      return 19
+    if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_21))
+      return 21
     if (JavaVersion.current().isCompatibleWith(JavaVersion.VERSION_17))
       return 17
   }

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.0.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.3-bin.zip
 networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -85,9 +85,6 @@ done
 APP_BASE_NAME=${0##*/}
 APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
 
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
-
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
 
@@ -133,10 +130,13 @@ location of your Java installation."
     fi
 else
     JAVACMD=java
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
+    fi
 fi
 
 # Increase the maximum file descriptors if we can.
@@ -197,6 +197,10 @@ if "$cygwin" || "$msys" ; then
     done
 fi
 
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
 # Collect all arguments for the java command;
 #   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
 #     shell script including quotes and variable substitutions, so put them in