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Private JVM (Java Virtual Machine),
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Alden Hosting offers private JVM (Java Virtual Machine), Java Server Pages (JSP), Servlets, and Servlets Manager with our Web Hosting Plans WEB 4 PLAN and WEB 5 PLAN , WEB 6 PLAN .

At Alden Hosting we eat and breathe Java! We are the industry leader in providing affordable, quality and efficient Java web hosting in the shared hosting marketplace. All our sites run on our Java hosing platform configured for optimum performance using Java 1.6, Tomcat 6, MySQL 5, Apache 2.2 and web application frameworks such as Struts, Hibernate, Cocoon, Ant, etc.

We offer only one type of Java hosting - Private Tomcat. Hosting accounts on the Private Tomcat environment get their very own Tomcat server. You can start and re-start your entire Tomcat server yourself.


10 Tips for Killer Website Design

7 Sure shots ways to improve your website

Attracting Visitors and Improving Your Search Results

Chasing the Search Engines Algorithms

Crash Course in Getting a 1 Google Ranking

Design Basics

Design Your Site for Traffic in 2005

Designing A Website That Sells

Googles Good Writing Content Filter

How to Write Effective Web Copy

How to Write Title Tags for Your Web Pages

JSP Actions

JSP Directives

JSP Scripting Elements and Variables

JSP

Java Brewing A Tutorial

Java How to Send Email in Java

Java Intro to JSP

Java JSP Browser Detection

Java JSP Syntax

Java JSP versus ASP

Java MySQL Database Connection

Java Programming Language

Java Virtual Machine

Java myths

JavaBeans

Linux Commands

Make Money Fast With Google Adwords

Make Money On The Internet What Is Your Niche

Make Money Quick With Google Adsense

PHP Redirects

Ranked 1 at Google for Invisible Entrepreneurs But No Traffic

Ruby Basic Input Output

Ruby Classes Objects and Variables

Ruby Containers Blocks and Iterators

Ruby and the Web

SEO One Way Web Links 5 Strategies

SEO Success Step Two Attracting Search Engine Attention

The 10 Best Resources for CSS

The 3 Best Website Traffic Sources

The 5 Biggest Mistakes Almost All Web Designers Make

The Click Fraud Problem

The Five Ways You Should Be Using Keywords

The Three Principles Of Image Optimization

Top 5 Secrets to Making Money with Adsense

True Paid Inclusion Programs are a Thing of the Past

Understanding Web Logs And Why it Matters

Index

Rename underscores.sh

Web Hosting Tips for Webmasters -
JSP Syntax

Page 3 — JSP Syntax


JSP supports two basic styles of delimiting its scripting elements from page content. The first looks a great deal like ASP, whereas the second can be used to create JSP that is fully XML compliant. Here, let's take a look:

Base StyleXML StyleDescription
<%@ directive %> <jsp:directive.directive/>Directives are used to specify page information, include other files, and specify tag libraries being used.
<%! declarative code %> <jsp:declaration>
declarative code
</jsp:declaration>
This code is placed as a declaration in the servlet that is generated. This is the only place that new methods can be declared.
<% code fragment %> <jsp:scriptlet>
code fragment
</jsp:scriptlet>
This code is placed within a base method of the generated servlet.
<%= code expression %> <jsp:expression>
code expression
</jsp:expression>

Some versions  use <jsp:expr/>

This code is placed within the base method of the generated servlet, where it is appended to the output stream being returned for the page. 

To utilize the XML Style delimiters, you have to format your JSP as an XML document. This requires some additional modification, like using <jsp:root/> as your the root XML node and making sure your page is well-formed XML. This conversion and the use of the XML Style are outside the scope of this article, but if XML is important to you or your project, you should definitely investigate them further on your own time.

If you're interested in learning more about XML and JSP, the book Professional Java XML Programming with Servlets and JSP is an excellent investment -- though if you're not quite ready to roll out the dough, JavaSoft's PDF about the matter is free for the downloading.

The most important things to know as you create your JSP website are the four basic types of delimeters: directives, declarations, fragments, and expressions. The following example is a complete JSP page that uses the base style of each delimiter:

LineComplete JSP
1
2
3
4
5
6
7
8
9
10
11
12

<%@ page info="Example"
import="java.io.*,java.util.*" %>
<%! String title = "Example JSP Page" %>
<%@ include file ="header.inc" %>

Anyone can count like this:<BR>
<%
   for (int i = 1; i < 6; i++) {
     out.println(i + "<BR>");
   }
   i = 1000000;
%>
It would take a lifetime, however to count to <%= i %>.
<%@ include file ="footer.inc" %>

In line 1, the page directive sets the generated servlet info to "Example" and makes sure that "java.io.*" and "java.util.*" are imported for use in the servlet. The import is, well, important, since without these imports there would be no access to additional Java APIs.

Line 2 declares title as a class variable. This variable can now be used in any following code. Most likely, it is used by the code in header.inc, which is included in place on line 3.

Line 4 is plain page content. This is sent to the output stream.

Lines 5 through 10 define a code fragment that writes out the numbers 1 to 5, with breaks in between, to the output stream.

Line 6 is page content that includes an expression. This content is sent to the output stream with the expression inserted.

Line 7 includes the footer.inc file, which presumably has some more content we want to place at the bottom of this file.

If you followed all that, then you now have a basic understanding of JSP syntax and are armed with enough knowledge to do some small amount of damage to your website. One gotcha that you should know about is that when included files are changed, the servlet generated by the JSP is not usually regenerated. So if you make a change to an included file, make sure to tell your server to regenerate the servlet for the including JSP. Another way to do this is to re-save the including JSP. This changes the file modification timestamp, which is supposed to cause the servlet to regenerate.

Now that we've taken a look at the basic syntax, let's take a look at how we can use the access objects that JSP provides us to detect the incoming browser and respond appropriately.


JAVA, JSP, SERVLETS, TOMCAT, SERVLETS MANAGER,
Private JVM (Java Virtual Machine),
Private Tomcat Server

Alden Hosting offers private JVM (Java Virtual Machine), Java Server Pages (JSP), Servlets, and Servlets Manager with our Web Hosting Plans WEB 4 PLAN and WEB 5 PLAN , WEB 6 PLAN .

At Alden Hosting we eat and breathe Java! We are the industry leader in providing affordable, quality and efficient Java web hosting in the shared hosting marketplace. All our sites run on our Java hosing platform configured for optimum performance using Java 1.6, Tomcat 6, MySQL 5, Apache 2.2 and web application frameworks such as Struts, Hibernate, Cocoon, Ant, etc.

We offer only one type of Java hosting - Private Tomcat. Hosting accounts on the Private Tomcat environment get their very own Tomcat server. You can start and re-start your entire Tomcat server yourself.


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