Generate Shadow Jar on Java 19

build.gradle.kts

@@ -2,13 +2,14 @@ plugins {
   kotlin("jvm") version "1.9.22"
   id("com.diffplug.spotless") version "6.25.0"
   id("com.android.lint") version "8.2.2"
+  id("com.github.johnrengelman.shadow") version "8.1.1"
 }
 
 version = "0.2.0-SNAPSHOT"
 val baseName = "string-res-exporter"
 
 java {
-  toolchain.languageVersion = JavaLanguageVersion.of(8)
+  toolchain.languageVersion = JavaLanguageVersion.of(19)
 }
 
 tasks.withType<Jar>().configureEach {
@@ -21,15 +22,11 @@ tasks.withType<Jar>().configureEach {
   }
 }
 
-val fatJar by tasks.registering(Jar::class) {
-  dependsOn(configurations.runtimeClasspath)
+tasks.shadowJar {
+  isEnableRelocation = true
+  relocationPrefix = "shadow"
   dependsOn(tasks.jar)
 
-  from(sourceSets.main.map { it.output.classesDirs })
-  from(configurations.runtimeClasspath.map { it.asFileTree.files.map(::zipTree) })
-
-  archiveClassifier = "fat"
-
   exclude(
     "**/*.kotlin_metadata",
     "**/*.kotlin_builtins",
@@ -50,9 +47,9 @@ val fatJar by tasks.registering(Jar::class) {
 val r8File = layout.buildDirectory.file("libs/$baseName-$version-r8.jar").map { it.asFile }
 val rulesFile = project.file("src/main/rules.pro")
 val r8Jar by tasks.registering(JavaExec::class) {
-  dependsOn(fatJar)
+  dependsOn(tasks.shadowJar)
 
-  val fatJarFile = fatJar.get().archiveFile
+  val fatJarFile = tasks.shadowJar.get().outputs.files.singleFile
   inputs.file(fatJarFile)
   inputs.file(rulesFile)
   outputs.file(r8File)
@@ -65,7 +62,7 @@ val r8Jar by tasks.registering(JavaExec::class) {
     "--output", r8File.get().path,
     "--pg-conf", rulesFile.path,
     "--lib", System.getProperty("java.home"),
-    fatJarFile.get().toString(),
+    fatJarFile.toString(),
   )
 }
 
@@ -111,6 +108,7 @@ spotless {
 val r8: Configuration by configurations.creating
 
 dependencies {
+  implementation(project(":internal"))
   implementation("org.apache.poi:poi:5.2.5")
   implementation("org.jdom:jdom2:2.0.6.1")
 

internal/build.gradle.kts

@@ -0,0 +1,7 @@
+plugins {
+  kotlin("jvm")
+}
+
+java {
+  toolchain.languageVersion = JavaLanguageVersion.of(19)
+}

internal/src/main/kotlin/io/github/goooler/internal/InternalLogger.kt

@@ -0,0 +1,12 @@
+package io.github.goooler.internal
+
+import java.util.logging.LogManager
+import java.util.logging.Logger
+
+object InternalLogger {
+  private val logger: Logger = LogManager.getLogManager().getLogger("internal")
+
+  fun info(message: String) {
+    logger.info(message)
+  }
+}

settings.gradle.kts

@@ -29,3 +29,5 @@ dependencyResolutionManagement {
 }
 
 enableFeaturePreview("STABLE_CONFIGURATION_CACHE")
+
+include(":internal")

src/main/kotlin/io/github/goooler/exporter/Main.kt

@@ -1,7 +1,6 @@
 package io.github.goooler.exporter
 
-import org.apache.logging.log4j.LogManager
-import org.apache.logging.log4j.Logger
+import io.github.goooler.internal.InternalLogger
 
 fun main(vararg args: String) {
   val (command, inputPath, outputPath) = args
@@ -12,6 +11,6 @@ fun main(vararg args: String) {
   }
 }
 
-val logger: Logger = LogManager.getLogger("Main")
+val logger = InternalLogger
 
 const val SUCCESS_OUTPUT = "Convert finished, output path:"