Java server pages

Nov 7, 2011Download as pptx, pdf2 likes1,671 views

JSP allows for dynamically generated web pages from HTML, XML, or other documents. It is a Java technology that serves as an alternative to ASP and PHP by making it easier for developers to write and modify regularly generated HTML compared to using print statements. Some key advantages of JSP are that it is portable to different operating systems and web servers unlike ASP, and it provides more built-in functionality than servlets but requires less code. The document then provides basic instructions on setting up a development environment for JSP and examples of coding basic JSP pages that display the current date, handle form selections, and output text.

JAVA SERVER PAGES

Dynamic
Web
Content
With
Ease

1

Let’s Learn JSP

Now What The Heck Is

JSP
2

Introduction

• JavaServer Pages (JSP) is
a Java technology that helps software
developers serve dynamically generated
web pages based on HTML,XML, or other
document types.

• Released in 1999 as Sun's answer
to ASP and PHP .

3

Comparison
Function/Feature JSP PHP
Programming Completely Object Scripting language
Approach Oriented but way too with Object Oriented
descriptive. Support.
String and data Rich library Rich Functionality .
manipulation Inbuilt support to
include third party
libraries from other
languages.
Learning curve It helps if you have an If you know C/C++,
decent understanding then you are halfway
of JAVA and its through to learn PHP.
architecture.
Web Oriented Inbuilt Functionality Inbuilt Functionality
Features but way too much of but less lines of code
code. and less time to build
an application. 4

Advantages of JSP

• Versus Active Server Pages (ASP)
JSP is portable to other operating systems
and Web servers; you aren’t locked into
Windows.

• Versus Servlets
It is more convenient to write (and to
modify!) regular HTML than to have a zillion
println statements that generate the HTML.
5

Let’s Dive into the World of JSP

• What are JAVA servlets ?
Servlets are java programs that run on a web
server and are user to make webpages on a
fly (dynamic).
• Advantages of Servlets :
Powerful ,portable and Cheaper than many
other alternatives .

6

•So aren’t JSP
and Servlets
the Same ..
•
7

The Difference

• Servlets, make you generate the entire
page via your program, even though most
of it is always the same. JSP lets you
create the two parts separately.

• So everything a servlet can do JSP can
and further it is more easier to write .

• Developers & Designers at there best .
8

Let’s a build a basic app

• Setup and Installation
Step 1. Download and install a Java Developer
Kit.
Step 2. Download and install the Apache-
Tomcat web server.
Step 3. Open Your browser and type
http://localhost:8080 .
Step 4: Save your app inside the root folder in
apache .
Step 5: Type
http://localhost:8080/<appname.jsp> to run you 9

Time For Some Coding

<%@page contentType="text/html" import="java.util.*" %> 1st JSP tag
<html>
<body>
<p> </p>
<div align="center">
<center>
<table border="0" cellpadding="0" cellspacing="0" width="460"
bgcolor="#EEFFCA">
<tr>
<td width="100%"><font size="6" color="#008000"> Date
Example</font></td>
</tr>
<tr>
<td width="100%"><b> Current Date and time is:  <font
color="#FF0000">
<%= new java.util.Date() %> 2nd JSP tag
</font></b></td>
</tr>
</table>
</center>
</div>
</body>
</html>
10

Another Example

Create a simple HTML page having the following
output :

Select Your Sport :
Cricket
Basketball
Soccer
Rugby
Hockey
11

JSP Coding Part

• <html>
<body>
<%! String[] sports; %>
<center>You have selected:
<%
sports = request.getParameterValues("sports");
if (sports != null)
{
for (int i = 0; i < sports.length; i++)
{
out.println ("<b>"+sports[i]+"<b>");
}
}
else out.println ("<b>none<b>");
%>
</center>
</body>
</html> 12

The Output

You have selected: Cricket
Soccer

13

That Was Easy ..

• So with the help of some simple examples
we saw the Power of JSP.

One can make JSP work the way he/she
wants and develop a full fledged web app
with it ..

So , CODE & DESIGN ..
The world is all yours..
14

Thank You 

Presented By :-

Apoorv Anand
@APo_ORV
15

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Java server pages

1. JAVA SERVER PAGES Dynamic Web Content With Ease 1

2. Let’s Learn JSP Now What The Heck Is JSP 2

3. Introduction • JavaServer Pages (JSP) is a Java technology that helps software developers serve dynamically generated web pages based on HTML,XML, or other document types. • Released in 1999 as Sun's answer to ASP and PHP . 3

4. Comparison Function/Feature JSP PHP Programming Completely Object Scripting language Approach Oriented but way too with Object Oriented descriptive. Support. String and data Rich library Rich Functionality . manipulation Inbuilt support to include third party libraries from other languages. Learning curve It helps if you have an If you know C/C++, decent understanding then you are halfway of JAVA and its through to learn PHP. architecture. Web Oriented Inbuilt Functionality Inbuilt Functionality Features but way too much of but less lines of code code. and less time to build an application. 4

5. Advantages of JSP • Versus Active Server Pages (ASP) JSP is portable to other operating systems and Web servers; you aren’t locked into Windows. • Versus Servlets It is more convenient to write (and to modify!) regular HTML than to have a zillion println statements that generate the HTML. 5

6. Let’s Dive into the World of JSP • What are JAVA servlets ? Servlets are java programs that run on a web server and are user to make webpages on a fly (dynamic). • Advantages of Servlets : Powerful ,portable and Cheaper than many other alternatives . 6

7. •So aren’t JSP and Servlets the Same .. • 7

8. The Difference • Servlets, make you generate the entire page via your program, even though most of it is always the same. JSP lets you create the two parts separately. • So everything a servlet can do JSP can and further it is more easier to write . • Developers & Designers at there best . 8

9. Let’s a build a basic app • Setup and Installation Step 1. Download and install a Java Developer Kit. Step 2. Download and install the Apache- Tomcat web server. Step 3. Open Your browser and type http://localhost:8080 . Step 4: Save your app inside the root folder in apache . Step 5: Type http://localhost:8080/<appname.jsp> to run you 9

10. Time For Some Coding <%@page contentType="text/html" import="java.util.*" %> 1st JSP tag <html> <body> <p> </p> <div align="center"> <center> <table border="0" cellpadding="0" cellspacing="0" width="460" bgcolor="#EEFFCA"> <tr> <td width="100%"><font size="6" color="#008000"> Date Example</font></td> </tr> <tr> <td width="100%"><b> Current Date and time is:  <font color="#FF0000"> <%= new java.util.Date() %> 2nd JSP tag </font></b></td> </tr> </table> </center> </div> </body> </html> 10

11. Another Example Create a simple HTML page having the following output : Select Your Sport : Cricket Basketball Soccer Rugby Hockey 11

12. JSP Coding Part • <html> <body> <%! String[] sports; %> <center>You have selected: <% sports = request.getParameterValues("sports"); if (sports != null) { for (int i = 0; i < sports.length; i++) { out.println ("<b>"+sports[i]+"<b>"); } } else out.println ("<b>none<b>"); %> </center> </body> </html> 12

13. The Output You have selected: Cricket Soccer 13

14. That Was Easy .. • So with the help of some simple examples we saw the Power of JSP. One can make JSP work the way he/she wants and develop a full fledged web app with it .. So , CODE & DESIGN .. The world is all yours.. 14

15. Thank You  Presented By :- Apoorv Anand @APo_ORV 15

Java server pages

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