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();
	}
	
}

public class HiLoPri 
{
     public static void main(String[] args)
     {
    	 Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
    	 Clicker hi=new Clicker(Thread.NORM_PRIORITY+2);
    	 Clicker lo=new Clicker(Thread.NORM_PRIORITY-2);
    	 
    	 lo.start();
    	 hi.start();
    	 
    	 try
    	 {
    		 Thread.sleep(10000);
    	 }
    	 catch(InterruptedException e)
    	 {
    		 System.out.println("Main thread interrupted.");
    	 }
    	 
    	 hi.stop();
    	 lo.stop();
    	 
    	 try
    	 {
    		 hi.t.join();
    		 lo.t.join();
    	 }
    	 catch(InterruptedException e)
    	 {
    		 System.out.println("InterruptedException caught");
    	 }
    	 System.out.println("Low-priority thread:"+lo.click);
    	 System.out.println("High-priority thread:"+hi.click);
     }
}