0);         }         if (shirts > 0 && shirts <= 0) {             System.out.printf("The extended cost is : $%.0f\n", ((shirts * 00.00) * .00));             System.out.printf("The shipping charges are $0.00\n");             System.out.printf("The total cost is : $%.0f\n", ((shirts * 00.00) * .00) + 0);         }         if (shirts > 0 && shirts <= 00) {             System.out.printf("The extended cost is : $%.0f\n", ((shirts * 00.00) * .00));             System.out.printf("The shipping charges are $0.00\n");             System.out.printf("The total cost is : $%.0f\n", ((shirts * 00.00) * .00) + 0);         }         if (shirts > 00) {             System.out.printf("The extended cost is : $%.0f", ((shirts * 00.00) * .00));             System.out.printf("Shipping is free!");             System.out.printf("The total cost is : $%.0f", ((shirts * 00.00) * .00));         