JSP applet tag X Html applet tag (what is the difference?)

what is the advantage in using the JSP applet tag instead of a simple Html applet tag ?
second question:
I have an applet in a Html frame, and a menu on the left side.... When the user select the applet option at first time, everything runs ok.. after the user select another option and then select the applet again, it fails in some features .. Why ?

well, if by "the JSP applet tag", you mean the jsp:plugin tag.. that will just generate the same HTML tag you would write. The only advantage would be it should be less typing to use the taglib.
second answer:
without seeing any code, it'd be hard to figure out the problem. The obvious thing is you are setting some state of something that is preventing further action.

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What is the difference if jsp code in head section or outside of HTML

I am confused about what is the difference if I include jsp code inside <html><head> jsp code </head><html>, or outside of HTML tag?
What is the difference if I put the jsp code inside head senction or in the body section?
Thank you in advance!

I may want to output some result from my java code to the screen, so I can see some of the variable values.
If I use java code to get some variables before <HTML> tag, can I use <%=variable%> in the other sections like body or head to receive the results?

What's the difference between tags and labels?

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JSP and Servlets? What's the difference?

I've got this book, and it's mixing servlet with jsp and then jsp with servlet. Can we just use one and still make a web application? What is the difference between the both? Can anyone give me a basic idea behind these 2 J2ee technologies.

hi,
Both use server-side Java to dynamically generate web pages. The source code to a JSP looks like HTML, with Java embedded inside
(a) normal HTML tags, (b) JSP tags like <jsp:include>, (c) custom tags, (d) scriptlets (Java code surrounded with <% and %>).
The source code to a servlet looks like Java, with HTML embedded in out.print(...) statements. Both use the Servlet API to communicate with the web server and the client. In fact, a JSP gets compiled into a servlet, so they're almost identical in terms of expressive power. The choice is, whether you're more comfortable coding your pages in Java or in JSP-style HTML; and since you can call a JSP from a Servlet and vice versa, you don't have to make an either-or decision.
Karthick PalaniChamy

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.
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What is the difference between java direct or java bean in JSP?

What is the difference if I use java code directly in JSP or use java bean in JSP?
Which class to use for receiving the passed parameter from html or java script? Any difference for java code and java bean in the way receiving the passed data?
How can I pass string from jsp to html or java script?

it's generally accepted as better design to separate presentation from logic. meaning, the java code in the jsp should be used to support displaying data, as oppsoed to implementing the application - like database access, etc.
when the logic is separated from the presentation, it allows you to reuse logic components within several jsp pages.
if you decide to change the presentation layer in the future (to support wap, for example) you don't need to rewrite your entire application, since the "guts" of the application is outside of the jsps.
it is also a good idea to separate your business logic from your data layer. adding a "buffer zone" between these layers helps in the same manner as in separating presentation from logic. if you're using flat files for storage now, upgrading to a database wouldn't require rewriting all your business logic, just the methods which write out the data to a file, for example.
once you feel comfortable with separating the various layers, check out the struts framework at http://jakarta.apache.org/
to answer your second question, to get parameters passed in from HTML forms, use ServletRequet's getParameter() method.
in tomcat:
<% String lastName = request.getParameter( "lastname" ); %>
to answer your third question: when displaying the HTML from withing a jsp, print out the string to a javascript variable or a hidden form element:
<% String firstName = "mike"; %>
<input type="hidden" name="firstname" value="<%= firstName %>">
<script language="javascript1.2">
var firstName = "<%= firstName %>";
</script>
this jsp results in the following html:
<input type="hidden" name="firstname" value="mike">
<script language="javascript1.2">
var firstName = "mike";
</script>

What's the difference between using java directly in JSP and java bean

What is the difference if I use java code directly in JSP or use java bean in JSP?
Which class to use for receiving the passed parameter from html or java script? Any difference for java code and java bean in the way receiving the passed data?
How can I pass string from jsp to html or java script?

1 Cleaner pages
2 you have to write the class and use set and get methods
3 What do you mean when saying passing string from jsp to html??, do you mean the value you can use <%=variablename%>

What's the difference between *.JSP and *.DO?

Hi. I'm new to JSP programming and noticed that form actions call something like pageName.do -- what's the difference between the .JSP and .DO? When do you call one vs. the other? Thanks.

A request including the jsp extension usually refers to a single JSP file on disk that will be loaded and rendered directly.
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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.
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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)

What is the difference between HTML DB and HTML DB Studio?

What is the difference between HTML DB and HTML DB Studio?

Doug,
Oracle HTML DB is a feature of the Oracle 10g Database which allows you to quickly & securely create web applications based on your data in Oracle.
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What is the difference between Topic Keywords and Index File Keywords?

What is the difference between Topic Keywords and Index File Keywords? Any advantages to using one over the other? Do they appear differently in the generated index?
RH9.0.2.271
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<meta name="MS-HKWD" content="BOFFO" />
When the help is compiled or generated, the Index (.HHK) file is consulted as normal, but any topics containing keywords added in this manner are also added to the Index you end up with. From the appearance perspective, the end user woudn't know the difference or be able to tell. Heck, if all you ever did was interact with the Index pod, you, as an author wouldn't know either. Well, other than the fact that the icons appear differently.
Operationally, keywords added to the topics themselves may hold an advantage in that if you were to import these topics into other projects, the Index keywords would already be present.
Hopefully this helps... Rick

Why exactly is a JSF IMP and a API, what is the difference?

Why exactly is a JSF IMP and a API, what is the difference?
I understand that JavaServer Faces technology is a framework for building user interfaces for web applications with a set of APIs for UI components and a custom tag library for expressing a JavaServer Faces interface within a JSP page.
But, why is there a jsf-impl.jar and a jsf-api.jar?
A clarification would be appreciated.
Thanks,

CowKing: Thank you.
In a discussion, when a developer refers to RI, they mean the jsf-api.jar only?
I don't need the jsf-impl.jar in my compile class path nor in my SJSAS 8.2 domain library directory either?
Thanks,
--Todd

What are the differences between Cartweaver CF and PHP?

I am on my final step of finishing the webpage that I am building and saw Cartweaver for a shopping cart that is compatible with dreamweaver. But I looked into the site and hey didnt give an explanation between the CF and PHP version. So I would like to know the differences and which one would work best with Dreamweaver Cs6.

Hi Kendall,
As far as application differences, functionality wise, there is no difference. Both Cartweaver 4 CF and Cartweaver 4 PHP function and present themselves exactly the same. As far as implementation there are very subtle differences due the the way CF and PHP work, but they both are very close and use "includes" to place the Cartweaver functionality in your site penetration pages. The web based store admins work exactly the same for both. So you get the same results no matter which direction you go.
Now what is the difference between PHP and ColdFusion? That is a very important question as it will impact what platform you use from now on - for this site, and possably future sites you build so this is worth taking a little time to consider.
Which is best? Well this could lead to a discussion like which is best Mac or PC? There are evangelists and zealots on both sides. The real truth of the matter is both are good choices, you just need to decide which is best, for you. One poster said "what does your host support" - good point, but if you are new to working with dynamic web sites and are deciding what platform you want to go with there are more important factors to consider than what your current host supports. You can always select a different host.
The biggest difference between CF and PHP is they way they are written - PHP is script pasted, much like JavaScript, CFML is tag based much like html. Because of this CFML is often a little easier to learn because it's a bit easier to look at something and figure out what it's doing. So you may want to take a little time looking at this aspect.
Fact is though, with either one because Cartweaver does the vast majority of anything to do with code for you, learning the language is something you may not choose to do anyway. An advantage to PHP is that it has much wider support, so finding developers to help out, or hosts can easier with PHP. So if you don't have any desire to dig in and learn code as you go and only want to learn what's necessary to get your shopping cart site up, then the steps and learning curve are pretty much the same and PHP may be a good way to go. If this raises more questions than it answerers, let me know I'd be happy to discuss this more with you offline.
So, back to the basics - from a functionality point, they are both the same. You only need to choose which platform you think will work best for you and go from there.
I hope this helps. If you have any other questions at all, ask away.
Lawrence Cramer - *Adobe Community Professional*
http://www.Cartweaver.com
PHP & ColdFusion Shopping Cart for Adobe Dreamweaver
Stay updated:
http://www.facebook.com/cartweaver
http://www.twitter.com/cartweaver
http://blog.cartweaver.com

What is the difference of using JavaBean and regular classes?

Experts,
I am new to JavaBean(not EJB), and wondering what is the difference of using JavaBean for JSP page compared with using regular Java class?
I know there are Bean tags which save some lines, what else?
What does "serialization" mean compared with "not serializable"?
thanks very much.

No.
A JavaBean is a regular JavaClass that:
1) implements java.io.Serializable
2) Its data members are private, and its data is accessed via getters and setters. You must define the getters and setters. Getters retrive the property, and must be in the format:
public PropertyType getPropertyName()
for most cases. The exception is when the PropertyType is a boolean, in which case you use:
public boolean isPropertyName()
Setters assign values to the property, and are in the form:
public void setPropertyName(PropertyType propValue)
3) There is also a PropertyChangeEvent model that needs to be followed.
A marker interface has no methods you need to implement. It just marks the class as supporting certain operations. In the case of Serializable, it means the class can be written to be an ObjectOutputStream for persistant storage.
As far as an example of JavaBean persistance, take a search on the java.sun.com site for Serializeable
Also, take a look at this: http://java.sun.com/developer/onlineTraining/Beans/beans02/
It concentrates mainly on gui component beans, but not all beans need to be gui parts... There are other pages to look at, but I can't find them at the moment, and I have to run...

1. What's the difference between private mode in Safari which i have to turn on every time again when opening safari. It's a two click activity which i would love to be able to set in the preference as default.

1. What's the difference between private mode in Safari which i have to turn on every time again when opening safari.
It's a two click activity which i would love to be able to set in the preference as default. It's tyering when have to do it everyday a few times. (Yes, i'm one of many who have the "i like safari but since the update crash everyday a few times" syndrome...
Yes, i have updated my system.
Yes, i have repared disk permissions with disk utility.
Am open for any other help in both cases. Thank you upfront
2. and the "tell websites not to track me" under Safari - Preference - Privacy.

That box should prevent websites using trackers to log your movements on the Web to benefit advertisers. I have no idea if it does.
Safari can keep your browsing history private. When you turn on private browsing, Safari doesn’t remember the pages you visit, your search history, or your AutoFill information, so your partner cannot see where you have been, but you must also remember to also turn off acceptance of cookies.
In all other respects Private Browsing is not as private as you might think:
http://www.switchingtomac.com/tutorials/how-to-make-safaris-private-browsing-fea ture-actually-private/
http://www.insanely-great.com/news.php?id=9054
and then Apple's own advice from here: http://www.apple.com/pro/tips/privacy_safari.html
"Note that the Private Browsing option does not prevent Safari from collecting cookies (the preference files automatically generated by many websites). The Reset Safari option clears all cookies. If you want to delete only certain ones, choose Preferences from the Safari menu, click the Security tab, and then click Show Cookies. You can select and delete individual cookies from the list that appears. Careful, though — if you’re a frequent web user, this list can be very, very long."
which is itself incomplete, the relevant part being 'If you want to delete only certain ones.
To that end it is useful to have Safari Cookies installed, which is the only cookie manager available for Safari:
http://sweetpproductions.com/safaricookies/
which automatically deletes all cookies not marked as 'favourites' when closing Safari. It does the same for Flash Cookies, but they are subject for themselves:
From this website:
http://machacks.tv/2009/01/27/flushapp-flash-cookie-removal-tool-for-os-x/
For those who do not know about Flash cookies, more properly referred to as Local Shared Objects (LSO), they operate in a similar way to regular browser cookies but are stored outside the purview of your browser, meaning you cannot delete them from within your browser, whether Safari, Firefox, Opera or any other. Typically they are issued from sites or 3rd party sites that contain Adobe Flash content. Since virtually all internet advertising is delivered in Flash, Google/Doudleclick and all other internet advertising companies are sure to be tracking your browsing behavior with Flash cookies. These companies can see you traverse the Internet as you come upon the plethora of sites that contain their embedded advertising. Check out the Wikipedia entry here.
In Mac OS X they are stored in the following location:
/User’s Home Folder/Library/Preferences/Macromedia/Flash Player/#SharedObjects
The settings for the Flash cookies are stored in:
/User’s Home Folder/Library/Preferences/Macromedia/Flash Player/macromedia.com/support/flashplayer/sys
In OS X Local Shared Objects, or Flash Cookies, are appended with a .sol suffix. Flush deletes all the Flash cookies (.sol) and their settings.
Flush can be downloaded from that page.
If you want to retain certain Flash cookies but not others, the excellent add-on for Safari called SafariCookies now includes a setting for automatically deleting flash cookies you don't want to retain, when Safari is shut down, in the same as it deals with ordinary cookies:
http://www.sweetpproductions.com/safaricookies/index.htm
which not only does that but much more equally useful stuff!
This article covers the issue in more depth:
http://www.wired.com/epicenter/2009/08/you-deleted-your-cookies-think-again/
Flash cookies are also known as 'Zombie Cookies' and are used by a number of firms, including Hulu, MTV, and Myspace. Graham Cluley, senior technology consultant at the internet security firm Sophos, told BBC News that the source of the trouble was Adobe Flash itself, which he called "one of the weirdest programs on the planet".
"I think it's highly unlikely that these large companies have abused Flash cookies - which are different from browser cookies - with malicious intent," he said.
"I think it's much more likely that the vast majority of users are simply oblivious to the bizarre way in which Adobe allows them to configure the software."
http://www.bbc.co.uk/news/technology-10787882
And a more recent article:
http://www.nytimes.com/2010/09/21/technology/21cookie.html?_r=3&scp=1&sq=flash&s t=cse
[b]Tracker cookies and the invisible web:[/b]
– tags, web bugs, pixels and beacons that are included on web pages in order to get an idea of your online behavior.
Ghostery tracks the trackers and gives you a roll-call of the ad networks, behavioral data providers, web publishers, and other companies interested in your activity.
http://www.ghostery.com/about
This provides an extension to Safari (also available for other browsers) that shows you what data tracking is active on each web page you visit, and enables you to block them.

JSP applet tag X Html applet tag (what is the difference?)

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