While using Synchronization my threads are working one after the other , the same happens when i have only one thread which executes the instructions one after the other so what’s the use of creating multiple threads.

class Myclass1 extends Thread
{
        public void run()
        {
         System.out.println("Running in class 1");
        }

}

class Myclass2 extends Thread
{
        public void run()
        {
            System.out.println("Running in class 2");
        }
}

class Driver
{
     synchronized public static void main(String[]args)
      {
        Myclass1 obj1=new Myclass1();
        Myclass2 obj2=new Myclass2();
        obj1.start();
        obj2.start();
        System.out.println("Hello");
      }
}