class psDemo
{
	private static int num=0;
	public static void main(String[] args)
	{
	psDemo obj1=new psDemo();
	obj1.num++;
	psDemo obj2=new psDemo();
	obj2.num++;	
	psDemo.num++;	
	System.out.println( "psDemo.num="+psDemo.num );
	}
}
//psDemo.num=3