Computer scienceProgramming languagesKotlinConcurrency and parallelismParallelismBasics of threads

Custom threads

Orders of displaying the strings

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Take a look at the following code with multiple threads:

fun main() {
    println("Hello Main")

    val helloThread2 = HelloThread2()
    helloThread2.start()
    
    val helloThread1 = HelloThread1()
    helloThread1.start()
}

class HelloThread1 : Thread() {
    override fun run() {
        println("Hello from Thread-1")
        val helloThread2 = HelloThread2()
        helloThread2.start()
    }
}

class HelloThread2 : Thread() {
    override fun run() {
        Thread.sleep(1000)
        println("Hello from Thread-2")
    }
}

Select all possible outputs:

Select one or more options from the list

Order 1
Hello Main
Hello from Thread-2
Hello from Thread-1
Hello from Thread-2

Order 2
Hello from Thread-2
Hello from Thread-2
Hello from Thread-1
Hello Main

Order 3
Hello from Thread-2
Hello from Thread-1
Hello from Thread-2
Hello Main

Order 4
Hello Main
Hello from Thread-2
Hello from Thread-2
Hello from Thread-1

Order 5
Hello Main
Hello from Thread-1
Hello from Thread-2
Hello from Thread-2

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