12.1 Multithreading Fundamentals

// तरीका 1: Runnable Interface (Recommended)
class BackgroundTask implements Runnable {
    private String taskName;

    public BackgroundTask(String name) {
        this.taskName = name;
    }

    @Override
    public void run() {
        for (int i = 1; i <= 3; i++) {
            System.out.println(taskName + " - स्टेप " + i);
            try {
                Thread.sleep(500); // आधा सेकंड का विराम
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}

public class ThreadDemo {
    public static void main(String[] args) {
        Thread t1 = new Thread(new BackgroundTask("टास्क A"));
        Thread t2 = new Thread(new BackgroundTask("टास्क B"));

        t1.start(); // नए थ्रेड में execution शुरू
        t2.start();
    }
}