Which is better - Applet or JSP?

I am creating an appilcation. It basically will use a database to allow users to enter new records or edit existing ones. I'm taking over this project from another person, who started it as an applet but didn't get too far. I'm looking at what is better - applet or plain jsp pages. What are the pluses and minues of each?

Which is better, apples or oranges?
The are probably no disadvantages to JSP except that you need a JSP server. The main disadvantage to applets is you almost certainly need the users to have the Java Plugin to run it. If they don't, they have to get and install it. JSP doesn't need any of that.

Similar Messages

Which one better to use - jsp:useBean or import statement

Hi,
I just want to know that which one is better to use jsp:useBean or import statement .
I can instantiate and call method of myclass -
1) by importing the class through import tag in jsp as <%@page import="myclass"%. or
2). by using <jsp:useBean tag....
i have these two option to do the same thing. i know that basically useBean is used to call setter and getter method of bean class and but it can be used to call a normal java file that have some logic .
so what should i used , which one is better and why?
useBean provides scope and object instance so no need to create object by new operator. and with import you have to create an instance .
but which tag should i use in my jsp?
i am confused???

ok, means i can use jsp:useBean tag for all my
classes that are not actually bean. so it will be
instantiated at run time and provide efficiency .No. Jsp:useBean is used for java bean components.
>
but when should i use import statement in my jsp and
it happen at translation time so will it create any
type of burden for my code if i import multiple
classes.For non-java beans, you need to import the classes, period.
It's not a burden, it's a necessity.

Which is better? single jsp or inc or diff jsp

hi,
I have 3 modes as a combo in the top of my form say new, enquiry and amend. If the user selects, new, a new screen should appear.The user can enter values and submit, so that it can be updated into the databse.
If the user selects Enquiry, getting some key fields from the user, the form should get submitted and display the result in the screen fields taking from the database.If it is amend, the user can do select and change and update the database..
In this scenaio, which one is advisable? having three different Jsps or having three different includes or working with single jsp(with bean).currently iam working with single jsp(code comes around 4000 lines + bean code comes around 1500 lines), debugging is bit tedious.
The screen has many dynamic combos, growing grids, popups generated from the grids.
Suggest me a solution.
Thanks in Advance,
Shyam

Hi , If i understood properly , u r stuck with design problems. so u follow the MVC controller technique to solve this problem. split all jsp in 4 parts or more than that if posibble. just pass the controll to the MVC object with the parameter based upon the selection of combobox. this MVC will analyse the objects parameter and based upon that will redirect to jsp's
u have to now seperate the business logic as well as the presentation logic. use Jsp's for presentation logic and for dynamic popup of the message boxes or loading combo boxes. Use JSP for business objects and use the usebean tags in the jsp's.
This will solve u r problem . try to break evry thing as simple objects as posibble. let it be even a chain of objects . it will be easy for u to debug as well as for the session management.
Good Luck.
if u need any more please feel free to mail me at [email protected]

Which is better JSF or JSP

We are planning to start a new Web Based Project, which one we should prefer for UI either JSF or JSP

JSF is just a MVC framework which can run on top of JSP/Servlets. Knowledge of JSP/Servlets is still required unless you use another view technology instead of JSP, such as Facelets. JSF basically removes the need to write your own controller servlet and provides lot of useful MVC related stuff and capabilities (conversion, validation, etc). If you're going to use plain vanilla JSP without any existing MVC framework, you'll have to create a custom framework and reinvent a lot of wheels which nobody else in the world is going to use.
Read the JSF specification to get a picture why JSF is there and what you can do with it.
[http://jcp.org/aboutJava/communityprocess/final/jsr252/index.html]

What is different between asp and jsp, which is better and why

hi, i would like to know which script language is better (ASP or JSP). if you can give me a detail comparison. Thank in advance
zhe

What do you expect small-time loser?

Re: Embedding Applet which takes dynamic input, into JSP | Need help

Hi All,
We are into a project in Oracle Portal Server where in we want to embed a result of a standalone application(Which is applet) in JSP.
This standalone application generates applet based on the input it gets from the current application's database.
If it was static we could have used jsp:plugin but, it fails in our case!
We are clueless as to how to embed an applet which will pick up the data dynamically.
Can anyone of you help me in this regard?
Thanks & Regards
Arthi

You can call an applet's public methods from JavaScript.
(And even the other way around, using JSObject).

Re: Embedding Applet in JSP which gets dynamic input| Pls help

Hi All,
We are into a project in Oracle Portal Server where in we want to embed a result of a standalone application(Which is applet) in JSP.
This standalone application generates applet based on the input it gets from the current application's database.
If it was static we could have used jsp:plugin but, it fails in our case!
We are clueless as to how to embed an applet which will pick up the data dynamically.
Can anyone of you help me in this regard?
Thanks & Regards
Arthi

Well instead of generating entire applet ,you can have a generic applet which takes parameters as ( <PARAM name="name" value="value"> ) inputs and process those inputs to generate output.
In this case the output of the stand alone program would be a object. And in JSP page you need to access this object, then you can get the values which need to be passed to Applet.
Else
1.Identify the real path of the applet class file
ServletContext context = session.getServletContext();
String realContextPath = context.getRealPath(request.getContextPath());2.Copy the file to a standard location in your web application
Regards,
-John-

Re: Including Applet in JSP with Dynamic input| Help needed

Hi All,
We are into a project in Oracle Portal Server where in we want to embed a result of a standalone application in Portal page.
We can do that once we can embed the result of the standalone application which generates applet based on the input it gets from the current application's database.
If it was static we could have used jsp:plugin but, it fails in our case!
We are clueless as to how to embed an applet which will pick up the data dynamically.
Can anyone of you help me in this regard?
Thanks & Regards
Arthi

Hi Arthi,
I think this might help you to get an idea why jsp:plugin tag does not allow for dynamically called applets.
<jsp:plugin type=applet height="100%" width="100%"
archive="myjarfile.jar,myotherjar.jar"
codebase="/applets"
code="com.foo.MyApplet" >
<jsp:params>
<jsp:param name="enableDebug" value="true" />
</jsp:params>
<jsp:fallback>
Your browser does not support applets.
</jsp:fallback>
</jsp:plugin>
The plugin example illustrates a <html> uniform way of embedding applets in a web page. Before the advent of the <OBJECT> tag, there was no common way of embedding applets. This tag is poorly designed and hopefully future specs will allow for dynamic attributes (height="${param.height}", code="${chart}", etc) and dynamic parameters. Currently, the jsp:plugin tag does not allow for dynamically called applets. For example, if you have a charting applet that requires the data points to be passed in as parameters, you can't use jsp:params unless the number of data points are constant. You can't, for example, loop through a ResultSet to create the jsp:param tags. You have to hand code each jsp:param tag. Each of those jsp:param tags however can have a dynamic name and a dynamic value.
I think you can get better information if you look in to the below link
http://pdf.coreservlets.com/CSAJSP-Chapter12.pdf
Many Thanks,
Ramesh.

Applets in JSP --- I'm going crazy!

I am using an applet I have written on a JSP page which I have also written.
Using: Win2K, IE6, J2SDK 1.4, Tomcat 4.0.3
I have several problems. Even if you can answer only one of them, it will be a great help!
Here is how I'm adding the applet.
<jsp:plugin type="applet" code="RawData.class" name="rawData" jreversion="1.4" width="700" height="55" >
<jsp:fallback>
Plugin tag OBJECT or EMBED not supported by browser.
</jsp:fallback>
</jsp:plugin>
</TD>
Problem 1) I can only get the applet loaded if the applet class file is in the same folder as the JSP file. Anything else, and I get a ClassNotFoundException.
Can't get the CODEBASE to do anything for me at all.
I set my codebase="/RawData/classes", but makes no difference.
I then tried Jarring my applet and placing RawData.jar in the same folder with the JSP. But also no go. I then set codebase="RawData.jar", but guess what... Nothing.
So my questions are: How do I get the applet to load from the applet.class files using codebase if the applet files are in a sub folder? And how do I get my applet to load from a Jar?
Problem 2) Once this applet is loaded, I have the biggest nightmare imaginable to get the browser to load a new version after I have updated it. And trust me, there is not and old version of the applet.class in my ClassPath. In fact there is not another copy of the applet.class file anywhere on my PC. I made sure. I have also disabled the Java Plugin Cache option, and deleted my temporary internet files with Explorer. But the thing persists in loading the old version from somewhere. What the heck do I do? I fear this is driving me insane.. :)
Problem 3) I need the HTML components to interact with the applet.
When I do a call to an applet function passing no parameters it works fine, and I get the value back, like this:
<SCRIPT LANGUAGE="VBScript">

</SCRIPT>
But when I do a function call, passing parameters, the scrip just stops working altogether, like this.
<SCRIPT LANGUAGE="VBScript">

</SCRIPT>
Why is this. What am I doing wrong.
And better yet... Is there a way of manipulating the HTML components from within JSP scriplet <% ... %>?
Please if anyone can help... It will be greatly appreciated. I am at a loss!
Thanx. Quigrim

Quigrim wrote:
Problem 1) I can only get the applet loaded if the applet class file
is in the same folder as the JSP file. Anything else, and I get a
ClassNotFoundException. Can't get the CODEBASE to do anything for me
at all.Set CODEBASE to point to the relative directory where your code is. If it is in the same directory as the JSP then CODEBASE="."; if it is in a sub-directory 'classes' then CODEBASE="classes".
Problem 2) Once this applet is loaded, I have the biggest nightmare
imaginable to get the browser to load a new version after I have
updated it. Close ALL browser windows - you have to force the plugin JVM to re-initialise - I've not found any other way to do it.
Hope these help you.
Phil.

How to get a value from applet in jsp?

Dear all,
I have a jsp page which includes a applet (in a form). User click to my applet and get the value.
and the jsp form can capture the value of the applet and send to servlet.
Is it possible?
If it is possible, how to do that?
Thanks.
Regards,
Kin

Hi,
Yes it is possible. You have to use LiveConnect.
The classes required are netscape.javascript.*
They are located in the jaws.jar file (jre/lib).
Here is a copy of the page found at http://www.rgagnon.com/javadetails/java-0177.html
Read/Write HTML field values from JAVA
[Netscape AND IE4 compatible]
The netscape.javascript.* (LiveConnect) package provides facilities to directly manipulate HTML FORM components.
JSObject win = (JSObject)JSObject.getWindow(this);
JSObject HTMLInputText = (JSObject) win.eval("document.forms[0].elements[0]");
String testValue = (String)HTMLInputText.getMember("value"); // read form value
HTMLInputText.setMember("value" , testValue + "new stuff"); // write form valueBut this action requires a signed applet. in Netscape, you must PrivilegeManager.enablePrivilege("UniversalBrowserRead");
PrivilegeManager.enablePrivilege("UniversalBrowserWrite");
before using an JSObject related to an HTML document.
But there is a workaround, simply pass the informations through Javascript functions!
[JSjava.java]
import java.applet.*;
import java.awt.event.*;
import java.awt.*;
import netscape.javascript.*;
public class JSjava extends Applet
     implements ActionListener {
Button b1,b2;
TextField tf;
JSObject win;
public void init(){
setLayout(new FlowLayout());
tf = new TextField(10);
b1 = new Button("to FORM");
b2 = new Button("from FORM");
b1.addActionListener(this);
b2.addActionListener(this);
add(tf);add(b1);add(b2);
public void actionPerformed(ActionEvent ae) {
if (ae.getSource() == b1) {
     // send TO FORM
     JSObject win = (JSObject)JSObject.getWindow(this);
     win.eval("setHTMLInputText('"+tf.getText()+"');");
if (ae.getSource() == b2) {
     // receive FROM FORM
     JSObject win = (JSObject)JSObject.getWindow(this);
     tf.setText((String)win.eval("getHTMLInputText();"));
}[JSjava.html]
<HTML><HEAD>
<SCRIPT>
function getHTMLInputText(){
return document.forms[0].elements[0].value;
function setHTMLInputText(s){
document.forms[0].elements[0].value = s;
</SCRIPT></HEAD><BODY>
<FORM>
<INPUT TYPE=text SZIE=20>
</FORM>
<APPLET NAME="JS" CODE=JSjava.class MAYSCRIPT WIDTH=200 HEIGTH=200>
</APPLET></BODY></HTML>Regards,
Denis.

Which is better to use: BEx query or Web Application as an iView in portal?

Hi gurus!
Are there any experienced opinions, which is better - publish a BEx query in portal or publish a BEx Web Application in portal? Is it easier to alter the layout attributes etc. if I create a BEx Web Application first before publishing?
What is the way of fixing for example filter item height if I publish BEx query in portal - is there a Web Application that it uses anyhow which I can fix? Or can I use in that case iView -properties in portal?
Thankful for advice
Sari

ok, means i can use jsp:useBean tag for all my
classes that are not actually bean. so it will be
instantiated at run time and provide efficiency .No. Jsp:useBean is used for java bean components.
>
but when should i use import statement in my jsp and
it happen at translation time so will it create any
type of burden for my code if i import multiple
classes.For non-java beans, you need to import the classes, period.
It's not a burden, it's a necessity.

Which is better for servers, Apache or Tomcat?

Which is better for servers, Apache or Tomcat?

For some reason that link I gave you isn't working right now, but it was today, weird. I would get Tomcat simple because sun uses it in its examples and recommends it. Here's sun's link then, it's probably more useful anyway. http://java.sun.com/products/jsp/

Applet in JSP page

Hello! I wrote an applet and try to put in jsp page in JDeveloper:
<jsp:plugin type="applet" code="CompositeTest.class"
width="400" height="400">
<jsp:fallback>
<p>Unable to load applet</p>
</jsp:fallback>
</jsp:plugin>
and I copy the class file to folder where the JSP page is located. When I start Jsp page I have a message: "Applet not found"
What I do wrong??? PLZ Help!
BEST REGARDS

Hi,
I am not sure the JSP file, which resides in the public_html directory, is part of the class path of the running application. If you open the project properties, you can see where JDeveloper looks for Java classes. Try and extend this setting to include the public_hml directory (you can also try and just add the source as a library path (see library section))
Frank

Which is better, Double Buffering 1, or Double Buffering 2??

Hi,
I came across a book that uses a completely different approach to double buffering. I use this method:
private Graphics dbg;
private Image dbImage;
public void update() {
if (dbImage == null) {
    dbImage = createImage(this.getSize().width, this.getSize().height);
    dbg = dbImage.getGraphics();
dbg.setColor(this.getBackground());
dbg.fillRect(0, 0, this.getSize().width, this.getSize().height);
dbg.setColor(this.getForeground());
paint(dbg);
g.drawImage(dbImage, 0, 0, this);
}that was my method for double buffering, and this is the books method:
import java.awt.*;
public class DB extends Canvas {
     private Image[] backing = new Image[2];
     private int imageToDraw = 0;
     private int imageNotDraw = 1;
     public void update(Graphics g) {
          paint(g);
     public synchronized void paint(Graphics g) {
          g.drawImage(backing[imageToDraw], 0, 0, this);
     public void addNotify() {
          super.addNotify();
          backing[0] = createImage(400, 400);
          backing[1] = createImage(400, 400);
          setSize(400, 400);
          new Thread(
               new Runnable() {
                    private int direction = 1;
                    private int position = 0;
                    public void run() {
                         while (true) {
                              try {
                                   Thread.sleep(10);
                              }catch (InterruptedException ex) {
                              Graphics g = backing[imageNotDraw].getGraphics();
                              g.clearRect(0, 0, 400, 400);
                                                g.setColor(Color.black);
                              g.drawOval(position, 200 - position, 400 - (2 * position), 72 * position);
                              synchronized (DB.this) {
                                   int temp = imageNotDraw;
                                   imageNotDraw = imageToDraw;
                                   imageToDraw = temp;
                              position += direction;
                              if (position > 199) {
                                   direction = -1;
                              }else if (position < 1) {
                                   direction = 1;
                              repaint();
          ).start();
     public static void main(String args[]) {
          Frame f = new Frame("Double Buffering");
          f.add(new DB(), BorderLayout.CENTER);
          f.pack();
          f.show();
}which is better? I noticed smoother animation with the later method.
Is there no difference? Or is it just a figment of my imagination??

To be fair if you download an applet all the class files are stored in your .jpi_cache, and depending on how that game requests its graphics sometimes they are stored there to, so really if you have to download an applet game twice, blame the programmer (I've probably got that dead wrong :B ).
But, what's wrong with Jars. They offer so much more.
No offence meant by this Malohkan but if you can't organize your downloaded files the internet must really be a landmine for you :)
Personally I'd be happy if I never seen another applet again, it seems java is tied to this legacy, and to the average computer user it seems that is all java is capable of.
Admitidly there are some very funky applets out here using lots of way over my head funky pixel tricks, but they would look so much better running full screen and offline.

Unable to load Applet in JSP using Tomcat 5.5.12

Hi
I am aunable to applet in jsp using Tomcat 5.5.12 and JRE 1.5. Below is the code that I am using
                                   <applet
                                   codebase = "."
                                   archive = "WebPOSApplet.jar"
                                   code = "webposprint.WPMainApplet.class"
                                   name = "Trans Applet"
                                   width = "450"
                                   height = "115"
                                   hspace = "0"
                                   vspace = "0"
                                   align = "middle"
                                   >
<param name = "redirectInfo" value = "SearchProducts.do">
                                   </applet>
<%/*%>
<OBJECT
                                   classid = "clsid:CAFEEFAC-0014-0002-0000-ABCDEFFEDCBA"
                                   codebase = "http://java.sun.com/products/plugin/autodl/jinstall-1_4_2-windows-i586.cab#Version=1,4,2,0"
                                   WIDTH = 450 HEIGHT = 115 >
<PARAM NAME = CODE VALUE = webposprint.WPMainApplet.class>
<PARAM NAME = archive VALUE = WebPOSApplet.jar>
<PARAM NAME = "type" VALUE = "application/x-java-applet;jpi-version=1.4.2">
<param name = "redirectInfo" value = "SearchProducts.do">
<PARAM NAME = "scriptable" VALUE = "false">
<PARAM NAME = model VALUE=models/buckminsterfullerine.xyz>
<embed width="450" height="115" code="webposprint.WPMainApplet.class" archive="WebPOSApplet.jar" type="application/x-java-applet;jpi-version=1.4.2" redirectinfo="SearchProducts.do" scriptable="false" model="models/buckminsterfullerine.xyz" src="webposprint.WPMainApplet.class">
</embed> <COMMENT> <EMBED
                                   type = "application/x-java-applet;jpi-version=1.4.2" \
                                   CODE = webposprint.WPMainApplet.class\
                                             archive = WebPOSApplet.jar\
                                   WIDTH = 373 \
                                   HEIGHT = 167 \
                                   model =models/buckminsterfullerine.xyz \
                                        scriptable = false \
                                        pluginspage = "http://java.sun.com/products/plugin/index.html#download"> <NOEMBED>
alt="Your browser understands the <APPLET>
tag but isn't running the applet, for some reason."
Your browser is completely ignoring the <APPLET>
tag! </NOEMBED> </EMBED> </COMMENT>
</OBJECT>
<%*/%>
This code doesn't seems working with Tomcat 5.5.12. I works fine with Tomcat 4.1.31
Please help
Thanks

Applets run client side - which means the relevant class files need to be downloaded to the client.
Anything under the WEB-INF directory is not directly accessible by the client. Nothing under WEB-INF can be downloaded.
ergo, specifying the WEB-INF directory as part of your applet codebase is a bad idea.
I would suggest try copying the applet classes from under WEB-INF to some other place in your application.
Also, you should probably specify the full class name of your Applet in the plugin tag.
<%@ page import="com.util.MyApplet" %>
<jsp:plugin type="applet" code="com.util.MyApplet" codebase="/classes" width="250" height="100" jreversion="1.6">
     <jsp:fallback>
          <B>Unable to start plugin!</B>
     </jsp:fallback>
</jsp:plugin>cheers,
evnafets

Which is better - Applet or JSP?

Similar Messages

Maybe you are looking for