Java Reference
In-Depth Information
com.acme.conversion.currency.Currency,
java.text.DecimalFormat"%>
<%
String startCurrStr = request.getParameter("startingCurrency");
String endCurrStr = request.getParameter("endingCurrency");
String amountStr = request.getParameter("amount");
double amount = Double.parseDouble(amountStr);
DecimalFormat df = new DecimalFormat("0.00");
CurrencyExchangeService service =
CurrencyExchangeServiceFactory.getService();;
double rate = service.requestCurrentRate(startCurrStr,
endCurrStr);
%>
<html>
<head>
<title>ACME Currency Converter - Results</title>
</head>
<body>
<h1>ACME Currency Converter - Results</h1>
<p>
Here are the results of your currency conversion. Enjoy!
</p>
<p>
Starting currency: <%= startCurrStr %><br>
Ending currency: <%= endCurrStr %><br>
Amount converted: <%= df.format(amount) %><br>
Exchange rate: <%= df.format(rate) %><br>
Amount after exchange: <%= df.format(amount * rate) %><br>
</p>
<p>
<a href="index.jsp">Return to main page</a>
</p>
</body>
</html>
With this
JSP
implemented, you should have a working web application front end.
Running and debugging an application like this are covered later in this chapter.
11.2 Working with EJBs
The
J2EE
platform provides clear separation of architectural elements of the
enterprise application; it consists of the client layer, web layer, and
EJB
layer.
IDEA
supports specific module types for each of the layers. In previous chap-
ters, we discussed using Java modules, which can be used for development of
