Help me in solving OPJA177 problem

help
,
1

My issue

pls solve

My code

class ThreadFunction1 implements Runnable {
    public void run() {
        for (int i = 0; i < 5; i++) {
            try {
                Thread.sleep(10); // Sleep for 10 milliseconds
            } catch (InterruptedException e) {
                System.out.println(e);
            }
            System.out.println("Thread 1 - iteration " + i);
        }
    }
}

class ThreadFunction2 implements Runnable {
    public void run() {
        for (int i = 0; i < 5; i++) {
            try {
                Thread.sleep(10); // Sleep for 10 milliseconds
            } catch (InterruptedException e) {
                System.out.println(e);
            }
            System.out.println("Thread 2 - iteration " + i);
        }
    }
}

 class Main {
    public static void main(String[] args) {
        Thread t1 = new Thread(new ThreadFunction1());
        Thread t2 = new Thread(new ThreadFunction2());

        t1.start(); // Start thread 1
        t2.start(); // Start thread 2

        try {
            t1.join(); // Wait for thread 1 to finish
            t2.join(); // Wait for thread 2 to finish
        } catch (InterruptedException e) {
            System.out.println(e);
        }

        System.out.println("Main thread: Done!");
    }
}

Learning course: Advanced Java programming
Problem Link: Multithreading Programming Problem in Advanced Java programming