controleAutoPecas.jsp

<%--
    Document   : controleHotel
    Created on : 06/09/2016, 21:17:41
    Author     : aluno
--%>

<%
    String valor = request.getParameter("valor");
    String cor = request.getParameter("cor");

    double preco = 0;
    double total = 0;

    try{
        preco = Double.parseDouble(valor);

        if(cor.equals("azul")){
            total = preco - (preco * 10/100);
        } else if(cor.equals("rosa")){
            total = preco - (preco * 20/100);
        } else if(cor.equals("amarelo")){
            total = preco - (preco * 30/100);
        } else if(cor.equals("branco")){
            total = preco - (preco * 40/100);
        }
    } catch(NumberFormatException erro){
        preco = 0;
        total = 0;
    }

    session.setAttribute("total", total);
    response.sendRedirect("mostradorAutoPecas.jsp");
%>