Difference between jsp forward tag and sendRedirect

I would like to know the difference between jsp forward tag and sendRedirect.
Please explain with a suitable example if possible ...
glenn

See: http://java.oreilly.com/news/jsptips_1100.html (number 4)

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Difference between jsp:forward and logic:forward

Hi,
Can anyone let me know??
what is the difference between <jsp:forward> in and <logic:forward> in struts
Thanks in advance,
Regards
Dhinesh kumar R

See: http://java.oreilly.com/news/jsptips_1100.html (number 4)

Difference between jsp:forward sendRedirect and jsp include directive

Am very much confused, please explain me the difference between
jsp:forward sendRedirect and jsp include directive with a suitable example.
I'll be very gratefull. Its very urgent.

One basic difference. The include executes in the .jsp servelet created. The redirect transfers "control" by redirecting the client request to another destination. In other words, the current .jsp is no longer in charge or in the calling chain in any way.

Difference between jsp forward action tag and response.forward()

hi guys
i have just started programming using j2ee technology.
could anyone please tell me what is the difference between the jsp forward action tag and froward method using the response object?

There really isn't one. The JSP forward tag is a convenience tag for JSP, that uses the response method.

What're the differences between JSP, Java Script, and Java Applet?

I am confused by the concepts: JSP (Java Server Page), Java Script, and Java Applet? What are their main differences?

I don't know about differences, but one of their main similarities is that each of them has a page in Wikipedia.
JSP
JavaScript
[Java applet|http://en.wikipedia.org/wiki/Java_applet]
There. That should give you enough information.

Is there any difference between "jsp:useBean" and "scriptlet" ?

A few days ago, I asked similar question. But I didn't get the answer I wanted.
I want to know the differnce between <jsp:useBean../> and <% .. %>(scriptlet).
I tested in three environments(Oracle Jserv, OC4J, and Apache Tomcat).
In Oracle Jserv and OC4J, a problem occured. But, Apache Tomcat does not occur a problem.
For example,
1) TestClass.java (Bean)
public class TestClass {
private String txt;
public class TestClass {
txt = "Test"; ----- (g
public String getTxt() {
return txt;
2) test.jsp
<html><body>
<% TestClass test = new TestClass(); %> ---(h
<%= test.getTxt() %>
</body></html>
Assume that I visit "http://localhost:8888/test.jsp".
In Tomcat, if I change "Test"(number(g) to "Test1" and compile the browser shows the change.
But Oracle Jserv and OC4J does not do that. They also show the old String.
So, I changed <% TestClass test = new TestClass(); %>(number(h) to <jsp:useBean id="test" class="TestClass" />. That is, I changed "Scriptlet" to "JSP useBean Tag".
Then, Oracle Jserv and OC4J also show the changes.
To conclude, is there any difference between "JSP useBean Tag" and "Scriptlet"?
Can't I use a scriptlet (to make a class) in Oracle Servlet Engine?
Thanks.

It could be as simple as the JSP not recompiling between java recompiles - ie, it compiles in the link to the old class.
Try changing the JSP file (add and delete a space) after you change the java code, and then see what happens.
Jonny
null

Whats the difference between *.jsp and *.jspx

Hi
When I create a new jsf page the first step prompts me for the "type". I am wondering what is the difference between JSP Page and JSP Document? Which should I be using? Are there any white papers or documents that explain the advantages of each?
Also, someone suggested that I use Facelets, has anyone else used these from inside jdeveloper? Any thoughts / tips would be appreciated.
Thanks
troy

JSPX uses an XML doument for you page code - it is the way we recommend you build your page. Makes for cleaner code and easier customization.
JSP uses HTML with embedded JSF tags in it.

What's the difference between jsp and jsf?

who can tell me what's the difference between jsp and jsf?
I'm puzzled when I found some of the technology in jsp is so similar to the ones in jsp( javaserver page)

Hi,
Find the difference between JSP and JSF
1. A developer has more control with JSP, but (should) get easier development with JSF
2. Event handling is done differently in JSP (HTTP) and JSF (Java)
3. The UI is designed differently (or should be at least) with JSP (markup) and JSF (components).
4. The end product should also be defined differently - JSP page versus a JSF application.
Is this the only thing that is need to make a decision for either or? Probably not. There are other pieces that need to be taken in account when deciding which technology to use - tools support, enough components, type of application etc.... At this point there are not enough JSF components (although there are some interesting projects underway - Ajaxfaces, Myfaces, ADF Faces, and WebChart 3d) and enterprise tools support is still limited to a few tools vendor. Looking at our ADF Faces components they are currently available as early access (not production) and demands for these components are stacking up, literally, outside my office doorstep. Although I would love to make them production - now! - it is not a viable solution since we are still checking features and fixing critical bugs.
All this combined - not enough enterprise level components in production, lacking tools support etc... - leave customers in a vacuum where the decision is either to continue with JSP, since it is mature and has a wide developer base, or move forward with JSF not sure if the support, or the developers will be there. This is particularly sensitive to customers that need to get started now and be production by summer.
If you are in this vacuum here are some key points promoting JSF:
1. Fundamental unit is the Component
2. Built in event and state management
3. Component sets can be provided by any vendor
4. Closer to ASP.Net or Swing development
5. Choice of UI technology
6. Scale up (rich clients)
7. Scale down (mobile devices)
8. Built into J2EE containers in J2EE 5.0 (tentative)

Difference between JSP and JSF

What is the difference between JSP and JSF?
Is it necessary to learn JSP before starting with JSF?

JSP is a view technology providing a template to write plain HTML/CSS/JS in. JSP supports Java based taglibs to generate output and/or control the page flow dynamically. A well known example is JSTL. JSP also supports access to backend data with help of EL (Expression Language).
JSF is a component based MVC framework which provides taglibs for use in JSP, the JSF core tags in <f:xxx> and the JSF HTML tags in <h:xxx>. Those tags generate HTML output and are tied to JSF component tree in the server memory so that the FacesServlet can work on them to gather request parameters, validate/convert them, update the model values (javabean properties), invoke some actions (javabean action methods) and render the response.
You can use JSF on top of either JSP or Facelets. Facelets is another view technology. JSP is ancient and has its shortcomings when JSF comes into picture. Facelets is designed with JSF in mind and much more well-suited for it and provides great templating/composition capabilities to reuse specific groups of components without the need to wrap them in another custom component (so that you don't duplicate the same code over and over, e.g. label+input+message.

Difference between JSP tags & UIX tags

Hi Experts
wats the difference between JSP tags & UIX tags and why we use UIX tags??

For information on UIX, please read the UIX Developer's Guide, linked from: http://otn.oracle.com/jdeveloper/904/help/

What is the difference between jsp :include and server side include

what is the difference between jsp :include and server side include(request dispatcher include method)????
i understand that both request dispatcher include method and jsp:include take dynamic data,so when would one use request dispatcher include and when jsp:include.
Is the usage interchangeable?i believe jsp include is used only for jsp/html but include directive can be used to include servlets ,jsp and html....correct me if i m wrong and
do suggest if u hav ny other diff in this context...

The difference really is: in what format do you want your inclusions? If your environment has many Java developers and only a few designers that focus mainly on, say, Flash, that might push you more towards the server-side include() directive. Or, if you have a large set of pages that receive dynamic content that is displayed in a consistent fashion (such as a workflow header area on a page).
If, on the other hand, you have more web designers, there may be a greater desire to deal in markup rather than Java code. Java developers themselves might prefer to view markup (JSP) that more resembles the eventual output than something occuring in Java code.
Finally, there are considerations of tiering. While it is totally possible to (and I have previously) implement 'view classes' that render markup or generate layout templates, JSP's offer, IMO, a subtle, psychological advantage. By forcing a developer to work in a different format, markup versus Java source, the separation on view from controller and model becomes a bit easier. It is still possible to make mistakes, but if a developer at some point notices, "Wait, I'm in a JSP, should I be importing a java.sql class?", then the choice to use JSP includes has paid off in spades.
- Saish

Difference Between Port Forwarding and Port Triggering.

Hi guys,
I'm lost! The differences between port forwarding and port triggering is driving me nuts! It all seems very subtle to me. Can anyone explain to me (in a very simple way) what exactly are their differences. Thanks in advance!!

Port Forwarding
The big difference between this and port triggering is that forwarding is fixed.. you forward a port and it is always forwarded.. IE available to connection.. basically the forwarded port is excluded from the fire walling abilities of the router. Second it is static and applies to one machine only. Whereas you could set port triggering to the router and thereafter any machine on the LAN can trigger it unless its already in use.. port forwarding must be specified for each individual machine.
Port forwarding requires you to give each PC on the network its own unique static IP address.. Although there is ssh port forwarding that can be set dynamically. Most users only have the option of static ip port forwarding.
The real downside of port forwarding is that it can be very tricky to set up... You may have to allow a series of ports on a machine and have to do that for each machine you want to allow through. Also routers often have limited abilities and may not allow you the ability to forward a port or select the service you require.
Port Triggering
This is a way of Dynamically assigning a service to a port WHEN it is required by an outgoing service. The port is initially not allowed so nothing can get in and you are protected by your network.
A good example of this is when using Yahoo! voice .. the voice works fine for a few minutes after you connect to Yahoo! then Yahoo! sends some kind of packet that requires a response from your PC... The packet is allowed in through your router no prob but the outgoing reply is not authorized to open a port on the router and is thus blocked.
'ope this helps

Difference between jsp:include and %@ include

what is the difference between <jsp:include> and <%@ include %>? which has better performance? When to use which? suppose i have a menu that should be included in every page, which should I use?
Thank you
Cal

<%-- some date this page was last updated with that particular version of JSP file --%>
<% include file="relative URL" %>
You use the include directive, as indicated, to include a file in the main JSP file at the time the file is translated into a servlet. This is done at translation time and therefore if the included JSP file changes, all the JSP files that use this included file will need tobe updated. If you use this include statement then i would suggest that you add a date descriptor of the last time it was modifed so that you can go back and tell if you have updated a particular JSP file or not.
<jsp:include page="relative url" flush = "true" />
When you use the JSP descriptor like this, you are getting the requested JSP file at REQUEST time and therefore you do not hae to worry about updating the calling JSP page.
Hope this helps

Difference between JSP Scopes

Hey people,
My name is Lucas Abrao, 22, Brazil. I'm a Java Programmer and now, I'm starting learning JSP. I' ve been having some easy doubts 'cause the books I have boght are a little bit advanced for that. I wanna know if you could tell me the differences between the JSP Scopes Pages. I mean, I wanna know the difference between application, session, request and page scopes and when do I utilize each one of them. Could you give four simple code example with each one of them at work?
Thanks you all.

Page Scope is the smallest scope, and is a representation of the PageContext object for your JSP. Each JSP has it's own page scope, so objects in the page scope of one JSP are not accessible to other JSPs. This is sorta like making a private variable in Java.
Request scope is the next smallest scope, and is represented with the JSP's request object. All JSPs and servlets that share a request share the request scope. For example, if I have a JSP that forwards to another page, and that second page includes a third JSP page, then all three pages are in the same request, and can share objects through the request scope. A special note here, is the response.redirect(), will create a new request, unlike forwards and includes. Also note, a new request is made every time the user gets a new page, be it by clicking a link, a button, or some JavaScript call.
Session scope is the next lowest scope, represented by an HttpSession object. All requests from the same user are in the same session (unless you or they make it otherwise). Each user has his own session. If you want data to be referred to through multiple pages, after each page is displayed and the user requests a new page, then store the information in the session. Note, in order for sessions ot work, the user must have cookies on, or you must re-write the URLs. Take a look for maintaining sessions for more help on that.
The widest scope is the application scope, represented by the ServletContext object. All users share the same values of the application scope, as there is only one made for the web application. If you have some static material that all users should be able to access, then put it in the application, but be carefull. Each user will see the changes other users make, and certain threading issues can occur if not handled properly. So application scope is usually best used for Read-Only data.

Difference between JSP 1.2 & JSP 2.0

What is the Difference between JSP 1.2 & JSP 2.0

Approximately - JSP 0.8
Check out this link
http://java.sun.com/products/jsp/docs.html
Get a copy of the JSP2.0 spec and read it. http://java.sun.com/products/jsp/download/index.html#specs
Main enhancements from 1.2 to 2.0
- Expression language (EL) in the container
- tag files

Difference between jsp forward tag and sendRedirect

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