DS-Practice/java-data-structures/multithreading_demo.java at main · Deepnar/DS-Practice · GitHub

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class FirstThread extends Thread {

    public void run() {
        for (int i = 1; i <= 5; i++) {
            System.out.println("First Thread: " + i);
            try {
                Thread.sleep(500);
            } catch (InterruptedException e) {
                System.out.println(e);
            }
        }
    }
}

class SecondThread implements Runnable {

    public void run() {
        for (int i = 1; i <= 5; i++) {
            System.out.println("Second Thread: " + i);
            try {
                Thread.sleep(700);
            } catch (InterruptedException e) {
                System.out.println(e);
            }
        }
    }
}

public class MultiThreadDemo {

    public static void main(String[] args) {

        FirstThread t1 = new FirstThread();

        Thread t2 = new Thread(new SecondThread());

        t1.start();
        t2.start();

        for (int i = 1; i <= 5; i++) {
            System.out.println("Main Thread: " + i);
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                System.out.println(e);
            }
        }

        System.out.println("All threads finished!");
    }
}