MasoudFallahpour

interface Software {
    fun getLicense(): String
}

MasoudFallahpour

import kotlinx.coroutines.*

fun main() = runBlocking {
    launch(CoroutineName("parent")) {
        launch {
            println("coroutine1 started")
            delay(500)
            throw RuntimeException()
        }
        launch {

MasoudFallahpour

import kotlinx.coroutines.*

fun main() = runBlocking {
    val job = launch {
        println("Coroutine started.")
        try {
            delay(Long.MAX_VALUE)
        } catch (ex: CancellationException) {
            println("Coroutine cancelled.")
        }

MasoudFallahpour

import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
import kotlinx.coroutines.runBlocking

fun main() = runBlocking {
    launch(Dispatchers.Unconfined) {
        println("Before delay. Thread name: ${Thread.currentThread().name}")
        delay(500)
        println("After delay. Thread name: ${Thread.currentThread().name}")

MasoudFallahpour

import kotlin.concurrent.thread

fun main() {
    repeat(100_000) {
        thread {
            Thread.sleep(1000L)
            println(".")
        }
    }
}

MasoudFallahpour

fun main() = runBlocking {
    val job = launch(CoroutineName("parent")) {
        println("Launching two coroutines...")
        val child1Job = launch {
            println("coroutine1: I'm started")
            delay(2000)
            println("coroutine1: I'm done")
        }
        launch {
            println("coroutine2: I'm started")

MasoudFallahpour

fun main() = runBlocking {
    val job = launch(CoroutineName("parent")) {
        launch {
            delay(2000)
            println("coroutine1: I'm done")
        }
        launch {
            delay(3000)
            println("coroutine2: I'm done")
        }

MasoudFallahpour

import kotlinx.coroutines.*

fun main() = runBlocking {
    val startTime = System.currentTimeMillis()
    val job = launch(Dispatchers.Default) {
        var nextPrintTime = startTime
        var i = 0
        while (i < 5 && isActive) { // <-- HERE!
            if (System.currentTimeMillis() >= nextPrintTime) {
                println("job: I'm sleeping ${i++} ...")

MasoudFallahpour

import kotlinx.coroutines.*

fun main() = runBlocking {
    val startTime = System.currentTimeMillis()
    val job = launch(Dispatchers.Default) {
        var nextPrintTime = startTime
        var i = 0
        while (i < 5) {
            if (System.currentTimeMillis() >= nextPrintTime) {
                println("job: I'm sleeping ${i++} ...")

MasoudFallahpour

import kotlinx.coroutines.CoroutineName
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
import kotlinx.coroutines.runBlocking

fun main() = runBlocking {
    val request = launch(CoroutineName("request")) {
        repeat(3) { i ->
            launch {
                delay((i + 1) * 200L) // variable delay 200ms, 400ms, 600ms