sne007

class Tasks {
    public static void main(String[] args) {
        ExecutorService executorService = Executors.newFixedThreadPool(3);
        executorService.submit(new Task1());
        executorService.submit(new Task2());
        executorService.submit(new Task3());

        executorService.shutdown();
    }
}

sne007

class Tasks {
    public static void main(String[] args) {
        Tasks t = new Tasks();
        Task1 t1 = new Task1();
        Task2 t2 = new Task2();
        Task3 t3 = new Task3();

        t1.start();
        t2.start();
        t3.start();

sne007

class ThreadForT1 implements Runnable {
    public void run() {
        System.out.println("Thread for T1 is running in thread " + Thread.currentThread().getName());
    }

    public static void main(String[] args) {
        ThreadForT1 t = new ThreadForT1();
        t.run();
    }
}

sne007

class ThreadForT1 implements Runnable {
    public void run() {
        System.out.println("Thread for T1 is running in thread " + Thread.currentThread().getName());
    }

    public static void main(String[] args) {
        ThreadForT1 t = new ThreadForT1();
        t.run();
    }
}

sne007

class ThreadForT1 implements Runnable {
    public void run() {
        System.out.println("Thread for T1 is running in thread " + Thread.currentThread().getName());
    }

    public static void main(String[] args) {
        ThreadForT1 t = new ThreadForT1();
        t.run();
    }
}

sne007

class ThreadForT1 extends Thread{
    public void run() {
        System.out.println("Thread for T1 is running in thread " + Thread.currentThread().getName());
    }

    public static void main(String[] args) {
        ThreadForT1 t = new ThreadForT1();
        t.run();
    }
}

sne007

import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.ForkJoinPool;

public class Main {
    public static void main(String[] args) {
        ExecutorService s = Executors.newFixedThreadPool(2);