ClassNotFoundException error for Kotlin project (not for Android) on Android Studio

Question

I tried to create a regular Kotlin project (non-android, only desktop / command line project) with Android Studio 2.3.3.

I followed the steps here , but with different build.gradlecontent, the contents of which I shared.

Actually, build.gradleI copied the contents from the build.gradlefile after creating a new project using IntelliJ Community Edition (2017.2).

Then I create a configuration in order to be able to run it on the desktop with a properly configured one, such as the Main Class, Working directory and Use classpath module. You can see in the image below.

and the following project file structure I have

, . , . .

    "/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java" -Didea.launcher.port=7534 "-Didea.launcher.bin.path=/Applications/Android Studio.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath "/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/charsets.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/ext/localedata.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/ext/sunec.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/jce.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/jsse.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/management-agent.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/resources.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/jre/lib/rt.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/lib/dt.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/lib/jconsole.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/lib/sa-jdi.jar:/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/lib/tools.jar:/Users/haxpor/.gradle/caches/modules-2/files-2.1/org.jetbrains/annotations/13.0/919f0dfe192fb4e063e7dacadee7f8bb9a2672a9/annotations-13.0.jar:/Users/haxpor/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jre7/1.1.4-2/272a21c30432c943d618008fbbd34762eb0d6c8a/kotlin-stdlib-jre7-1.1.4-2.jar:/Users/haxpor/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.1.4-2/fec983b2608a8a91a1b87dba18d247d692cf6b51/kotlin-stdlib-1.1.4-2.jar:/Users/haxpor/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jre8/1.1.4-2/168cc3f45c307edda6c867dd0635a7d451257551/kotlin-stdlib-jre8-1.1.4-2.jar:/Applications/Android Studio.app/Contents/lib/idea_rt.jar" com.intellij.rt.execution.application.AppMain io.wasin.testjavaapp.Main
Exception in thread "main" java.lang.ClassNotFoundException: io.wasin.testjavaapp.Main
    at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:264)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:123)

Process finished with exit code 1

, classpath, , /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java . , classpath gradle, , .

?

Main.kt. . -.

package io.wasin.testjavaapp

object Main {
    @JvmStatic fun main(arg: Array<String>) {
        println("Hello world")
    }
}

build.gradle Kotlin Kotlin Android Studio. ext.kotlin_version = '1.1.4-2'. .

2

build src. .class intermediates, / , kotlin-build/caches/version.txt . . , , ?

3

, , . assets , , , .

2 .

• testJavaApp - root one
• desktop - Main.kt

testJavaApp build.gradle

group 'io.wasin'
version '1.0-SNAPSHOT'

// Top-level build file where you can add configuration options common to 
all sub-projects/modules.
buildscript {
    ext.kotlin_version = '1.1.4-2'
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.3'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

desktop build.gradle

apply plugin: 'kotlin'

sourceSets.main.java.srcDirs = [ "src/" ]
project.ext.mainClassName = "io.wasin.testjavaapp.Main"
project.ext.assetsDir = new File("../assets");

dependencies {
    testCompile group: 'junit', name: 'junit', version: '4.12'
    compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
}
repositories {
    mavenCentral()
}

task run(dependsOn: classes, type: JavaExec) {
    main = project.mainClassName
    classpath = sourceSets.main.runtimeClasspath
    standardInput = System.in
    workingDir = project.assetsDir
    ignoreExitValue = true
}

, , .

4

@aristotll , Android Studio, , IntelliJ. , Android Studio. , , , , , . , .

Answer 1

.

runtimeClasspath files("build/classes/kotlin/main") build.gradle

dependencies {
// This dependency is found on compile classpath of this component and consumers.
compile 'com.google.guava:guava:23.0'

// Use JUnit test framework
testCompile 'junit:junit:4.12'
compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
compile group: 'dom4j', name: 'dom4j', version: '1.6.1'
runtimeClasspath files("build/classes/kotlin/main")

}

- build/calsses/kotlin/main, runtimeClasspath.it !