KTLN-246 - Configure Kotlin's bytecode version with Gradle (#1107)

* add module

* add class

* build test

* downgrade to java 11

* split project

* split, to avoid redundance

* groovy to kts

* skip

* update kts

* remove unused plugin

* try remove toolchain

* remove unused test

* merge module

* clean

* targetCompatibility to release

Author: hangga

gradle-kotlin-dsl/configure-bytecode/build.gradle.kts

@@ -0,0 +1,60 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
+plugins {
+    kotlin("jvm") version "2.0.0"
+}
+
+group = "com.baeldung"
+version = "1.0-SNAPSHOT"
+
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation("org.jetbrains.kotlin:kotlin-test")
+}
+
+tasks.test {
+    useJUnitPlatform()
+}
+
+// compileKotlin, compileKotlinTest
+kotlin {
+    compilerOptions {
+        jvmTarget.set(JvmTarget.JVM_11)
+    }
+}
+
+tasks.compileJava {
+    options.release.set(11)
+}
+
+// Reaching Test Source Only
+tasks.compileTestJava {
+    options.release.set(11)
+}
+
+tasks.compileTestKotlin {
+    compilerOptions {
+        jvmTarget.set(JvmTarget.JVM_11)
+    }
+}
+
+// configureEach
+tasks.withType<KotlinCompile>().configureEach {
+    compilerOptions {
+        jvmTarget.set(JvmTarget.JVM_11)
+    }
+}
+
+tasks.withType(JavaCompile::class).configureEach {
+    options.release.set(11)
+}
+
+// toolChain
+kotlin {
+    jvmToolchain(11)
+}

gradle-kotlin-dsl/configure-bytecode/src/main/kotlin/com/baeldung/Main.kt

@@ -0,0 +1,10 @@
+package com.baeldung
+
+class Main {
+    companion object {
+        @JvmStatic
+        fun main(args: Array<String>) {
+            println("Just for test bytecode version!")
+        }
+    }
+}

gradle-kotlin-dsl/settings.gradle.kts

@@ -1,3 +1,6 @@
 rootProject.name = "gradle-kotlin-dsl"
 
-include("gradle-kotlin-dsl", "custom-source-set")
+include(
+    "gradle-kotlin-dsl",
+    "custom-source-set",
+    "configure-bytecode")