Mine

public class Bill {
	public static double total (String type, double cost,boolean ship){


	double total=0;	//value of book after shipping and taxes

	if (type.substring(0,1).equals("st")){
		cost=cost-cost*0.15;
	}
	else if (type.substring(0,0).equals("g")){
		cost=cost-cost*0.10;
	}
	else if (type.substring(0,0).equals("s")){
		cost=cost-cost*0.07;
	}
	else if (type.substring(0,0).equals("f")){
		cost=cost-cost*0.05;
	}
	else if (type.substring(0,0).equals("o")){
		cost=cost*1.0;
	}
	if (ship==true){
		total=cost+10.00;
	}else{
		total=cost;
	}
	total=total*1.13;
	return total;
}
}