Upgrade Java version from 1.8 to 17 - Update build.gradle.kts to use Java 17 with JVM toolchain - Update Dokka plugin to version 1.9.10 - Remove deprecated jcenter repository - Update Gradle wrapper to version 8.5 - Update GitHub Actions to use Java 17 and latest actions versions

Author: kubode

.github/workflows/check.yml

@@ -8,12 +8,13 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 1.8
-      uses: actions/setup-java@v1
+    - uses: actions/checkout@v4
+    - name: Set up JDK 17
+      uses: actions/setup-java@v4
       with:
-        java-version: 1.8
+        java-version: '17'
+        distribution: 'temurin'
     - name: Build with Gradle
-      uses: eskatos/gradle-command-action@v1.3.3
+      uses: gradle/gradle-build-action@v2
       with:
         arguments: build

.github/workflows/publish.yml

@@ -8,13 +8,14 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
-      - name: Set up JDK 1.8
-        uses: actions/setup-java@v1
+      - uses: actions/checkout@v4
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
         with:
-          java-version: 1.8
+          java-version: '17'
+          distribution: 'temurin'
       - name: Build with Gradle
-        uses: eskatos/gradle-command-action@v1.3.3
+        uses: gradle/gradle-build-action@v2
         with:
           arguments: publishToSonatype closeAndReleaseSonatypeStagingRepository
         env:

build.gradle.kts

@@ -3,22 +3,27 @@ plugins {
     kotlin("jvm") version embeddedKotlinVersion
     `maven-publish`
     signing
-    id("org.jetbrains.dokka") version "1.4.20"
+    id("org.jetbrains.dokka") version "1.9.10"
     id("io.github.gradle-nexus.publish-plugin") version "1.0.0"
 }
 
 group = "com.wantedly"
 version = "1.1.0"
 
+java {
+    toolchain {
+        languageVersion.set(JavaLanguageVersion.of(17))
+    }
+}
+
 tasks.withType<org.jetbrains.kotlin.gradle.tasks.KotlinCompile>().all {
-    // Gradle requires targeting 1.8 or higher.
-    kotlinOptions.jvmTarget = "1.8"
+    kotlinOptions {
+        jvmTarget = JavaVersion.VERSION_17.toString()
+    }
 }
 
 repositories {
     mavenCentral()
-    // Workaround: https://github.com/Kotlin/dokka/issues/41
-    jcenter()
 }
 
 dependencies {

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.6.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists