Program to make Thread in Java using concept of multi threading

class A extends Thread
{
 public void run ()
 {
   System.out.println("threadA started");
   for (int i =1; i<=4; i++)
     {
       System.out.println("\tFrom Thread A: i="+i);
     }
     System.out.println("Exit from A");
 }
}
class B extends Thread
{
 public void run ()
 {
   System.out.println("threadB started");
   for (int j =1; j<=4; j++)
     {
       System.out.println("\tFrom Thread B: j="+j);
     }
     System.out.println("Exit from B");
 }
}
class C extends Thread
{
 public void run ()
 {
   System.out.println("threadC started");
   for (int k =1; k<=4; k++)
     {
       System.out.println("\tFrom Thread C: k="+k);
     }
     System.out.println("Exit from C");
 }
}
class ThreadPriority
{
  public static void main (String args[])
  {
    A threadA = new A();
    B threadB = new B();
    C threadC = new C();
threadC.setPriority(Thread.MAX_PRIORITY);
threadB.setPriority(threadA.getPriority()+1);
threadA.setPriority(Thread.MIN_PRIORITY);

System.out.println("started thread A");
threadA.start();

System.out.println("started thread B");
threadB.start();

System.out.println("started thread C");
threadC.start();

System.out.println("End of main thread");
}
}