Computer scienceProgramming languagesJavaWorking with dataMultithreadingBasics of threads

Custom threads

Possible order of the output strings

Report a typo

Take a look at the following code with multiple threads:

public class Main {

     public static void main(String []args) {
        System.out.println("Hello Main");
        
        HelloThread2 t2 = new HelloThread2();
        t2.start();
        
        HelloThread1 t1 = new HelloThread1();
        t1.start();
     }
}

class HelloThread1 extends Thread {
    
    @Override
    public void run() {
        System.out.println("Hello from Thread-1");
        HelloThread2 t = new HelloThread2();
        t.start();
    }
}

class HelloThread2 extends Thread {
    
    @Override
    public void run() {
        Thread.sleep(1000);
        System.out.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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