class clicker implements Runnable
{  
    int click = 0; 
    Thread t;

    private volatile boolean running = true;

    public clicker (int p)
    {
        t = new Thread(this);
        t.setPriority(p);
    }
    public void run()
    {
        while (running)
        { 
            click++;
        }
    }
    public void stop()
    {
        running = false;
    }
    public void start()
    {
        t.start();
    }
}
    
class Thread2
{ 
    public static void main(String ar[])
    {    
        Thread.currentThread().setPriority(Thread.MAX_PRI ORITY);

        clicker hi = new clicker(Thread.NORM_PRIORITY +2);
        clicker lo = new clicker(Thread.NORM_PRIORITY -2);

        lo.start();
        hi.start(); 
        
        try
        {
            Thread.sleep(600);
        }
        catch(InterruptedException e)
        {
            System.out.println("Main Thread Interrupted");
        }
        lo.stop();
        hi.stop();
        try
        {
            hi.t.join();
            lo.t.join();
        }    
        catch (InterruptedException e)
        {
            System.out.println("InterruptedExcepion catch");
        }
        System.out.println("Low-priority Thread"+lo.click);
        System.out.println("Hight prioprty Thread"+hi.click);
    }
}            

Output: