Kotlinx.coroutines: Compile Kotlin with coroutines via command line

[DenysMokhrin]

STRUCTURE:

1.Main.kt file

import kotlinx.coroutines.*

fun main(args: Array<String>) {
    GlobalScope.launch { // launch a new coroutine in background and continue
        delay(1000L) // non-blocking delay for 1 second (default time unit is ms)
        println("World!") // print after delay
    }
    println("Hello,") // main thread continues while coroutine is delayed
    Thread.sleep(2000L) // block main thread for 2 seconds to keep JVM alive
}

2. kotlinx-coroutines-core-1.3.0-M1.jar
https://mvnrepository.com/artifact/org.jetbrains.kotlinx/kotlinx-coroutines-core/1.3.0-M1

COMPILE COMMAND:
kotlinc Main.kt -cp kotlinx-coroutines-core-1.3.0-M1.jar -include-runtime -d program.jar
output: program.jar

RUN:
java -jar program.jar

EXCEPTION:

Exception in thread "main" java.lang.NoClassDefFoundError: kotlinx/coroutines/GlobalScope
at MainKt.main(Main.kt:10)
Caused by: java.lang.ClassNotFoundException: kotlinx.coroutines.GlobalScope
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 1 more

---

How can I fix this?

[elizarov]

You should also specify additional classpath libraries when you run it:

java -cp kotlinx-coroutines-core-1.3.0-M1.jar:program.jar MainKt

[DenysMokhrin]

@elizarov thnx it works!

[zyfyy]

here is my kc command to run kotlin faster

#!/usr/local/bin/bash
function kc {
    file=$1
    lib=$2
    arr=(${file//./ })

    name=${arr[0]}
    sufix=${arr[1]}

    out="${name}.jar"
    class="${name^}${sufix^}"

    # echo $file
    # echo $lib
    # echo $out
    # echo $class

    if [ "$lib" != "" ];then
        echo "kotlinc $file -cp $lib -include-runtime -d $out ..."
        kotlinc $file -cp $lib -include-runtime -d $out
        echo "java -cp $lib:$out $class ..."
        java -cp $lib:$out $class
    else
        echo "kotlinc $file -include-runtime -d $out ..."
        kotlinc $file  -include-runtime -d $out
        echo "java -jar $out ..."
        java -jar $out
    fi
}

kc $1 $2

make sure your bash version is up to 5.0

[aoloe]

@zyfyy 's script did not work for me.

by chance i stumbled up a post that gave me the right hint: i need to add @file:JvmName("MainKt") at the top of main.kt

then it worked!

thanks for sharing.