JSP and JSTL Tutorials - Tutorial Addendum - JSP Elements
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(Continued from antecedent part...)
JSP Archetype - "CurrentTime.jsp"
The afterward archetype has three JSP files alive calm to appearance you
how to use "decalaration" elements, "include" charge elements
and "include" activity elements. Actuality is the capital JSP file, CurrentTime.jsp:
<?xml version="1.0"?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="1.2">
<!-- CurrentTime.jsp
Absorb (c) 2002 by Dr. Yang
-->
<jsp:directive.page contentType="text/html"/>
<html><body>
<jsp:directive.page import="java.util.*"/>
<jsp:directive.page import="java.text.*"/>
<jsp:declaration>
clandestine Date now;
clandestine JspWriter out;
clandestine abandoned printTime(String tz) throws Throwable {
DateFormat df = DateFormat.getInstance();
df.setTimeZone(TimeZone.getTimeZone(tz));
out.println(tz+": "+df.format(now)+"<br/>");
}
</jsp:declaration>
<p>
<b>Current time in altered time zones:</b><br/>
<jsp:scriptlet>
this.out = out;
now = new Date();
printTime("America/New_York");
printTime("America/Los_Angeles");
printTime("Asia/Shanghai");
printTime("Europe/Paris");
printTime("Europe/Moscow");
</jsp:scriptlet>
</p>
<p>
<jsp:directive.include file="JvmStamp.jsp"/>
</p>
<p>
<jsp:include page="TimeStamp.jsp"/>
</p>
</body></html>
</jsp:root>
Here is the JSP book acclimated by the cover charge element, JvmStamp.jsp:
<?xml version="1.0"?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="1.2">
<!-- JvmStamp.jsp
Absorb (c) 2002 by Dr. Yang
-->
<b>Current JVM:</b><br/>
<jsp:scriptlet>
Cord s;
s = "java.vm.name";
out.println(s+": "+System.getProperty(s)+"<br/>");
s = "java.vm.version";
out.println(s+": "+System.getProperty(s)+"<br/>");
s = "os.name";
out.println(s+": "+System.getProperty(s)+"<br/>");
s = "os.version";
out.println(s+": "+System.getProperty(s)+"<br/>");
</jsp:scriptlet>
</jsp:root>
Here is the JSP book acclimated by the cover activity element, TimeStamp.jsp:
<?xml version="1.0"?>
<jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="1.2">
<!-- TimeStamp.jsp
Absorb (c) 2002 by Dr. Yang
-->
<b>Current Time: </b>
<jsp:scriptlet>
java.util.Date d = new java.util.Date();
out.println(d.toString());
</jsp:scriptlet>
</jsp:root>
Here is what I got by requesting CurrentTime.jsp from IE:
Current time in altered time zones:
America/New_York: 12/23/02 9:38 PM
America/Los_Angeles: 12/23/02 6:38 PM
Asia/Shanghai: 12/24/02 10:38 AM
Europe/Paris: 12/24/02 3:38 AM
Europe/Moscow: 12/24/02 5:38 AM
Current JVM:
java.vm.name: Java HotSpot(TM) Applicant VM
java.vm.version: 1.3.1_01
os.name: Windows 2000
os.version: 5.0
Current Time: Mon Dec 23 21:38:10 EST 2002
(Continued on next part...)
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