p. 748
Bottom of page:
<%
int salAmount = 3000;
if (salAmount > 0) {
%>
<h2>The salary is positive.</h2>
<%
}
else {
%>
<table border="1">
<tr align="center">
<td><b>Warning!</b></td>
</tr>
<tr align="center">
<td>Salary is negative or zero.<br />
Contact your Financial Advisor.
</td>
</tr>
</table>
<%
}
%>p. 751
Scripting Elements in the servlet:
<!-- Salary display -->
<%-- scriptlets --%>
<%
int salAmount = 3000;
if (salAmount > 0) {
%>
<h2>The salary is positive.</h2>
<br>
<%
out.write("The new salary is " + calcRaise(salAmount));
%>
<%
}
else {
%>
<h1>The salary is
<%-- expression --%>
<%= salAmount %>
</h1>
<%
}
%>
<br>
<%// expression %>
<%= "Salary is " + salAmount %>
%-- declaration --%>
<%!
public static double calcRaise(int salary) {
return(salary * 1.3);
}
%>p. 759
JSP Standard Tag Library:
<table border="1">
<% for (int i = 1; i <= 3; i++) { %>
<tr>
<% for (int j = 1; j <= 4; j++) { %>
<td>
<%= i %>:<%= j %>
</td>
<%} %>
</tr>
<% } %>
</table>p. 760
JSTL Example:
<table border="1">
<c:forEach begin="1" end="3" var="i" >
<tr>
<c:forEach begin="1" end="4" var="j">
<td>
<c:out value="${i}" />:<c:out value="${j}" />
</td>
</c:forEach>
</tr>
</c:forEach>
</table>p. 766
The Sample Code:
<%@ page contentType="text/html;charset=windows-1252"%>
<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>
<html>
<head>
<title>Build a Table</title>
</head>
<body>
<c:if test="${pageContext.request.method=='POST'}" >
<c:set var="varName" value="rows" />
<c:choose>
<c:when test="${param[varName]=='0' or param.columns=='0'}" >
Both Rows and Columns must be greater than 0.<br />
</c:when>
<c:otherwise>
<table border="1">
<c:forEach begin="1" end="${param.rows}" var="i" >
<tr>
<c:forEach begin="1" end="${param.columns}" var="j">
<td>
<c:out value="${i}:${j}" />
</td>
</c:forEach>
</tr>
</c:forEach>
</table>
</c:otherwise>
</c:choose>
</c:if>
<h2>Table Dimensions</h2>
<form method="POST">
Rows: <input type="text" name="rows" size="3" />
Columns: <input type="text" name="columns" size="3" />
<input type="submit" value="Build" /><br />
</form>
</body>
</html>
