update to OpenJDK 21, Gradle 8.4

build.gradle

@@ -1,13 +1,12 @@
-
 plugins {
     id "checkstyle"
     id "pmd"
     id 'maven-publish'
     id 'signing'
-    id "io.github.gradle-nexus.publish-plugin" version "1.3.0"
-    id "com.github.spotbugs" version "5.0.14"
-    id "org.cyclonedx.bom" version "1.7.2"
-    id "org.xbib.gradle.plugin.asciidoctor" version "2.5.2.2"
+    id "io.github.gradle-nexus.publish-plugin" version "2.0.0-rc-1"
+    //id "com.github.spotbugs" version "6.0.0-beta.3"
+    id "org.cyclonedx.bom" version "1.7.4"
+    id "org.xbib.gradle.plugin.asciidoctor" version "3.0.0"
 }
 
 wrapper {
@@ -31,13 +30,13 @@ ext {
 }
 
 apply plugin: 'java-library'
-apply from: rootProject.file('gradle/ide/idea.gradle')
+//apply from: rootProject.file('gradle/ide/idea.gradle')
 apply from: rootProject.file('gradle/repositories/maven.gradle')
 apply from: rootProject.file('gradle/compile/java.gradle')
 apply from: rootProject.file('gradle/test/junit5.gradle')
 apply from: rootProject.file('gradle/quality/checkstyle.gradle')
 apply from: rootProject.file('gradle/quality/pmd.gradle')
-apply from: rootProject.file('gradle/quality/spotbugs.gradle')
+//apply from: rootProject.file('gradle/quality/spotbugs.gradle')
 apply from: rootProject.file('gradle/publish/maven.gradle')
 apply from: rootProject.file('gradle/publish/forgejo.gradle')
 apply from: rootProject.file('gradle/publish/sonatype.gradle')

gradle.properties

@@ -1,5 +1,5 @@
 group = org.xbib
 name = bibliographic-character-sets
-version = 3.0.0
+version = 4.0.0
 
 org.gradle.warning.mode = ALL

gradle/compile/java.gradle

@@ -2,21 +2,14 @@
 apply plugin: 'java-library'
 
 java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(21)
+    }
     modularity.inferModulePath.set(true)
     withSourcesJar()
     withJavadocJar()
 }
 
-compileJava {
-    sourceCompatibility = JavaVersion.VERSION_17
-    targetCompatibility = JavaVersion.VERSION_17
-}
-
-compileTestJava {
-    sourceCompatibility = JavaVersion.VERSION_17
-    targetCompatibility = JavaVersion.VERSION_17
-}
-
 jar {
     manifest {
         attributes('Implementation-Version': project.version)
@@ -24,7 +17,9 @@ jar {
 }
 
 tasks.withType(JavaCompile) {
-    options.compilerArgs.add('-Xlint:all,-exports')
+    options.fork = true
+    options.forkOptions.jvmArgs += ['-Duser.language=en','-Duser.country=US']
+    options.compilerArgs.add('-Xlint:all')
     options.encoding = 'UTF-8'
 }
 

gradle/quality/cyclonedx.gradle

@@ -2,7 +2,7 @@ cyclonedxBom {
     includeConfigs = [ 'runtimeClasspath' ]
     skipConfigs = [ 'compileClasspath', 'testCompileClasspath' ]
     projectType = "library"
-    schemaVersion = "1.4"
+    schemaVersion = "1.5"
     destination = file("build/reports")
     outputName = "bom"
     outputFormat = "json"

gradle/quality/spotbugs.gradle

@@ -1,4 +1,4 @@
-
+/*
 apply plugin: 'com.github.spotbugs'
 
 spotbugs {
@@ -13,3 +13,4 @@ spotbugsMain {
         html.getRequired().set(true)
     }
 }
+*/

gradle/test/junit5.gradle

@@ -1,8 +1,9 @@
 dependencies {
-    testImplementation libs.junit.jupiter.api
-    testImplementation libs.junit.jupiter.params
-    testImplementation libs.hamcrest
-    testRuntimeOnly libs.junit.jupiter.engine
+    testImplementation testLibs.junit.jupiter.api
+    testImplementation testLibs.junit.jupiter.params
+    testImplementation testLibs.hamcrest
+    testRuntimeOnly testLibs.junit.jupiter.engine
+    testRuntimeOnly testLibs.junit.jupiter.platform.launcher
 }
 
 test {

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-all.zip
 networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -83,7 +83,8 @@ done
 # This is normally unused
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -130,18 +131,21 @@ 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.
 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
         # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045
+        # shellcheck disable=SC2039,SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
@@ -149,7 +153,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
       '' | soft) :;; #(
       *)
         # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045
+        # shellcheck disable=SC2039,SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -198,11 +202,11 @@ 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
-#     double quotes to make sure that they get re-expanded; and
-#   * put everything else in single quotes, so that it's not re-expanded.
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \

settings.gradle

@@ -1,11 +1,14 @@
 dependencyResolutionManagement {
     versionCatalogs {
         libs {
-            version('gradle', '8.1.1')
+            version('gradle', '8.4')
+        }
+        testLibs {
             version('junit', '5.9.2')
             library('junit-jupiter-api', 'org.junit.jupiter', 'junit-jupiter-api').versionRef('junit')
             library('junit-jupiter-params', 'org.junit.jupiter', 'junit-jupiter-params').versionRef('junit')
             library('junit-jupiter-engine', 'org.junit.jupiter', 'junit-jupiter-engine').versionRef('junit')
+            library('junit-jupiter-platform-launcher', 'org.junit.platform', 'junit-platform-launcher').version('1.10.0')
             library('junit4', 'junit', 'junit').version('4.13.2')
             library('hamcrest', 'org.hamcrest', 'hamcrest-library').version('2.2')
         }