Update Gradle to support Java 22

buildSrc/build.gradle.kts

@@ -7,5 +7,9 @@ repositories {
 }
 
 dependencies {
-    implementation("com.github.spotbugs.snom:spotbugs-gradle-plugin:6.0.1")
+    implementation("com.github.spotbugs.snom:spotbugs-gradle-plugin:6.0.15")
+}
+
+kotlin {
+    jvmToolchain(21)
 }

buildSrc/src/main/kotlin/fastcsv.java-conventions.gradle.kts

@@ -15,13 +15,9 @@ tasks.withType<com.github.spotbugs.snom.SpotBugsTask>().configureEach {
     reports.maybeCreate("html").required = true
 }
 
-// Need to add this as PMD 7 (required for Java21) is not yet released
-dependencies {
-    pmd("net.sourceforge.pmd:pmd-ant:7.0.0-rc4")
-    pmd("net.sourceforge.pmd:pmd-java:7.0.0-rc4")
-}
-
 pmd {
+    // Version bundled with Gradle 8.8 is not able to run on Java 22.
+    toolVersion = "7.2.0"
     isConsoleOutput = true
     ruleSets = emptyList()
     ruleSetFiles = files("${project.rootDir}/config/pmd/config.xml")

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.8-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

gradlew

@@ -55,7 +55,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.

gradlew.bat

@@ -43,11 +43,11 @@ set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
 if %ERRORLEVEL% equ 0 goto execute
 
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail
 
@@ -57,11 +57,11 @@ set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
 if exist "%JAVA_EXE%" goto execute
 
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail