public void removeFirst() 
	{
		int position = 1;
		if ( this.isEmpty() || position > numItems || position < 1 )
		{
			System.out.print("This delete can not be performed "+ "an element at position " + position + " does not exist " );
		}
		for (int i=position-1; i< numItems-1; i++)
			this.bookArray[i] = this.bookArray[i+1];
			this.bookArray[numItems-1] = null;
			numItems--;
			System.out.println("DELETED first book from the Array \n");
		
			return ;
	}