Applets and server scripts

Hi,
I'm trying to run a java applet with a web application I'm developing, but I'm having some trouble running it.
I have a dll which generates html pages dynamically, and in one of the pages i want to call an applet, but I keep getting an error that the class cannot be found.
running this on a personal webserver, I have my scripts in the "inetpub/scripts" directory, and I've tried putting my packages under the scripts sub directory, and in the wwwroot directory, as well as the inetput directory, but i still get the error.
in the applet tag, I have <applet code=package.classname.class ...>
i have also created the html page on its own, as a seperate html file, and the page works.. i only get the error when the .dll is generating the html page.
any help would be much appreciated.
thanks!
dtudino.

When you pull up one of you DLL pages in your browser, you get some URL like
http://www.somedomain.com/somepath/Generated.html
If your <applet> tag has no codebase parameter, it expects the applet to be in
http://www.somedomain.com/somepath/package/classname.class
There could be a couple of problems here. First, maybe your HTML generator has the directory security set so that nothing can be served directly from it.
Try using the codebase parameter of the <Applet> tag
<applet code="package.classname.class" codebase="http://www.somedomain.com/someotherpath" ...>
I don't like to use absolute paths in <applet> tags, but it will work for debugging.
Next, if you are using a jar file, you need to have an archive parameter in your <applet> tag.

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Order of execution of named method user properties and server script

Dear All,
If for a Custom method on an applet, we have scripts in WebApplet_preinvokemethod and WebApplet_invokemethod and also for the same Custom method we have applet Named Method user properties and BC Named Method user properties, what will be the order of execution of these scripts and Named Method user properties??

The Private Event Submission sample portlet shows how to achieve this. It is part of the PDK download.
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Hello,
I want to read and write on server port such that applet is communicating with a server application.
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Look at this 3 pages
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Hi Guys
I have a quick question regarding the use of Applets..
Let's say i've made an applet which i can put on a webpage to pick a date..
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Nonameo,
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// get input data for sending
String input = inputField.getText();
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C# application to execute both oracle and sql server script files.

Hi All,
I am suppose to develop an application using c# which can execute oracle script files as well as sql server script files based on some user's choice.
Both the script files(oracle/sql server) contains scripts to create tables, create views and create functions.
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I am suppose to develop an application using c# which can execute oracle script files as well as sql server script files based on some user's choice.
You can use SQL Plus for Oracle. You can have a C# program that issues commands for scripts for table, views, triggers creation and the whole 10 yards to SQL Plus,
http://docs.oracle.com/cd/B19306_01/server.102/b14357/qstart.htm
https://www.google.com/#q=sql+plus
I started writing a program to use SQL Plus to run the scripts, but cI ame to the conclusion that it was a waste of my time.
A tool called OSM, an Oracle, tool gives a list of script files that need to be run do to a change in a script file based on file timestamp. You can copy the list doing a copy/past operation and drop it into SQL Plus's Command line, and SQL Plus runs the
scripts.
For MS SQL Server, you have this, which you can run from a C# program too.
http://www.webfactory-world.de/wfknowledgebase/wfknowledgebase_wf3.3/Content/AdditionalWindowsSettings/Tutorials/UpdatingSQLDBFromCommandLine.htm
I would consider using the above from a C# program a waste of time too.
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Sql Server Script for the List of all Country State and City

I am searching for the Sql Server Script of all country State and City with the Following type
For the Country only 2 Columns are there i.e. CountryId and CountryName(CountryId is primary Key)
For the State 3 Columns are there i.e. CountryId, StateId and StateName(StateId is Primary Key and CountryId is Foreign Key)
For the City 3 Columns are there i.e. StateId ,CityId and CityName(CityId is PrimaryKey and StateId is foreign Key).
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Thanx and Regrads,

Hi Vishnu,
According to your description, you want to list all countries, states and cities, right?
I have tested it on my local environment, here is a sample script for you reference.
select
[dbo].[Country].[CountryId]
, [dbo].[Country].[CountryName]
, [dbo].[State].[StateId]
, [dbo].[State].[StateName]
, [dbo].[City].[CityId]
, [dbo].[City].[CityName]
from
[dbo].[Country]
left join [dbo].[State] on [dbo].[Country].[CountryId]=[dbo].[State].[CountryId]
left join [dbo].[City] on [dbo].[State].[StateId]=[dbo].[City].[StateId]
Regards,
Charlie Liao
TechNet Community Support

Is it possible to record audio/ vedio from applet and store it on server

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If u want to capture audio/video from the client machine these are the pre-requisites
1. u need to have JMF installed on the client :(
one way out of this is that u bundle the library files along ur applet to the client. I am still to figure out how
to fo that.
2. while installation uncheck the option 'copy DLLs to system folder....' and check the option 'Allow capture
from applets.
3. The Applets u create must be signed, for accessing the client resources such as hard drive.
You can then capture n save file on the client, open an inout stream out of it, open an outputstream to the server as already described above and start uploading......

SAPRFC script acting as client and server

I'm using PERL SAPRFC for alot of our SAP monitoring and it works a charm.
All the PERL scripts are either client or server.
I'm now looking at how to implement one that acts as both, where SAP sends it something and the script receives it, then sends something back, hopefully within the same conversation ID.
Has anyone done this before?
I've had a look through SAPCONNECT documents and it uses module SX_OBJECT_RECEIVE to send data and expects some data to be sent back.
It's this that I'm having issue with.

If only I had been patient and not so dumb!
Basically by setting the Table row value to what I need, it gets sent back to SAP anyway.

What's difference push stream with server script and push with flash media live encoder??

Hi
I'm multi point push streaming with adobe flash media server 4
Stream structure like this
Open Broadcaster Software (or Flash media live encoder) (RTMP) -> Home Flash media server with multi push script (main.asc)
-> Stream to 2 justintv channels + 1 dailymotion channel (1024x576 , 1750Kbps)
no problem at all when streaming to justintv
but some another stream services have speed problem
ustream can not push with this method
and dailymotion, vaughnlive push speed slow down than OBS or FMLE Direct stream
for example
when direct streaming with OBS or FMLE (Without home server) , no problem at all stream to dailymotion and vaughnlive
clearly no lag
but when push with server script, slow down push speed and unstable (it affect only for dailymotion and vaughnlive streams)
justintv upload speed same as OBS, FMLE's bitrate but dailymotion, vaughnlive bitrate always slower than justintv or OBS, FMLE
Like this - justintv , OBS, FMLE (1750Kbps~2000Kbps) but dailymotion, vaughnlive (1600Kbps~1800Kbps)
I don't understand why have push speed difference between server script push and OBS, FMLE push
Have any reason? and do not have solution???
(sorry for my bad english)

First of all let me clarify that we call multi point publish and it has been explained in detail here
http://help.adobe.com/en_US/flashmediaserver/devguide/WS5b3ccc516d4fbf351e63e3d11a0773d56e -7ffbDev.html
When you do multi point publish(MPP) you publish from one server to another server, when you use FMLE you do a normal publish of stream(s) from a client/encoder(FMLE in this case) to the Adobe Media server.

IIS, Javascript, Signed Applet and ASP Blank Page Problem

Hi,
I'm having a problem using a Signed Applet in a site that runs in a IIS (Windows Server 2003).
My aspx web page uses the applet to read my smart card and get information from it.
This applet uses an auxiliar dll (stored in a second Signed Jar file) in order to read the information from my smart card.
The way the solution is design:
1) Aspx page is asked from server
2) Internet Explorer recieve the page and asks the server for it content (images, applet, javascripts, etc)
3) After this the JVM runs (console opens)
4) After the Aspx page render fully a javascript register onload fires and call an applet method
5) Applet receive the call and run the logic of the method:
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5) The server makes some logic with the information receive and responds to client registering in aspx page a call to another Javascrit function
6) The client received the asnwer from server and runs the Javascript function registered on step 5)
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     - call javascript function in order to fill more fields of aspx page with the information readed
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7) The server makes some logic and call another pages with no Applets
8) Client asks for a second page with the same applet and we start with another logic express on steps 1);2);3),4);5) and then 7).
This is all ok, until sometimes the server stop responding correcly for requests regarding this two pages with the Applet.
When this happens the server just responds with a blank page.
     - with fiddler I can seer the request for the aspx page (that uses the applet)
     - but server responds with a blank html page
The JVM doesn't fire.
The IIS log don't show errors.
The eventviewer doesn't show errors.
The problem is solved with an IIS reset or a Application Pool reset.
After a while the problem returns.
This problem occours for other user in another machine, the server just stops responding correcly to request regarding pages with applets, the other pages still continue to work.
If we disable Java Control Panel->Advanced->Java Plug-in->Enable the next-generation Java Plug-in the problem seend to stop, but we can't force all clients to disable this option right?
Or there is a way to force the Applet to run with this option disabled?
As anyone experience similar problem?
Regards,
OF

This is all ok, until sometimes the server stop responding correcly for requests regarding this two pages with the Applet.
When this happens the server just responds with a blank page.
- with fiddler I can seer the request for the aspx page (that uses the applet)
- but server responds with a blank html pageWell, if http requests look identical in case of success and failure (pay attention to cookies, etc) then it has to be something on the server side.
It could be that server gets into this wrong state because of previous requests made by applet but it is hard to tell.
I am not clear how old/new plugin can make a difference unless your applets run in the legacy mode (i.e. you are actually trying to reuse SAME instance of the applet when
it is loaded next time).
I'd start with
1) carefully comparing good/bad sessions
2) checking whether server will serve correct response to another client when it serves "bad" page for current client
3) add debug statements to aspx - it is scripted page, may be some condition is not met and then it returns blank?
4) record all http requests in one session until you get to "error" state and then use any http server testing tool to "replay" this set of requests.
You should be able to get server into the same state without use of applet. Then you can try to tweak set of requests to see what makes a difference.

How to call BS Browser Script from Server Script

I have a req. where a confirmation message need to be displayed to the user from Server Script.
I have followed the steps described in bookshelf http://download.oracle.com/docs/cd/E05553_01/books/CommSrvAdm/CommSrvAdm_AdvConfig40.html
and the same is not working. I am invoking the BS from Applet Server script.
Please let me know if the above steps can be used in our context as it is not at all related to CTI.
For the above config I have selected one of the existing Profiles in our system and am not sure about the role played by the same.
Thanks in advance.

You create a Business Service, then deploy the BS as described in the bookshelf and finally call it through Browser Scripts.
You can't interact with the browser session from the server the way you describe your requirement.

Socket communication failure between Java applet and C++ application

I have a java applet that connects to a C++ application via Java's ServerSocket and Socket objects. THe C++ application is using the Winsock 2 API. The applet and application are running on an NT workstation (SP 6) and using IE (5.5) For a very simple C++ test applications the communictions work fine. Once more code gets added to the C++ application the portion of the socket that C++ listens to seems to close. Upon performing a recv call the return value is a zero. Microsoft insists this is a sign the Java side has shut down the socket. The Java applet can still receive messages from the C++ app but C++ cannot receive responses from the Java side. Java throws no exceptions and an explicit check of the socket shows no errors. Again, what puzzles me is that it works for simple C++ applications. Are there any known conflicts between Java and C++ in this regard?
I have inlcuded the basic java code segments below.
/ run Method.
* This method is called by the Thread.start() method. This
* method is required for the implementation of the Runnable interface
* This method sets up the server side socket communication and
* contiuously loops looking for requests from a external
* socket.
* @author Chris Duke
public void run(){
     // create socket connections
     boolean success = false;
     try {
         cServerSocket = new ServerSocket(cPortID);
         System.out.println("Waiting for client to connect...");
         cClientSocket = cServerSocket.accept();
         System.out.println("Client connected");
         // Create a stream to read from the client
         cInStream = new BufferedReader(new InputStreamReader(
           cClientSocket.getInputStream()));
         // Create a stream to write to the client
         cOutStream = new PrintWriter(
           cClientSocket.getOutputStream(), true);
         success = true;
     }catch (IOException e) {
         System.out.println("CommSocket:Run - Socket Exception(1) " + e);
         success = false;
     // if the socket was successfully created, keep the thread running
     while (success){
         try{
            // check socket to see if it is still available for reading
            if (cInStream != null && cInStream.ready()){
                // check for an incoming message
                String message = ReceiveMessage();
                // Send message to listeners
                Event(message);
            if (cInStream == null){
                success = false;
                System.out.println("CommSocket:Run - shutdown");
         }catch (IOException e){
            System.out.println("CommSocket:Run - Socket not ready exception");
            break;
// SendMessage method -
* Sends a text message to a connected listener through port specified by portID
* @author Chris Duke
* @param String message - This will be the message sent out through the server
* socket's port specified by portID.
   public void SendMessage(String message){
      cOutStream.println(message);
      if (cOutStream.checkError() == true)
        System.out.println("SendMessage : Flush = Error");
      else{
        System.out.println("SendMessage : Flush - No Error");
   }

a very simple C++ test applications the communictions work fine. Once more code gets added to the C++ application the portion of the socket that C++ listens to seems to close.
This quite strongly implicates the extra code in the C++ App. The firstly thing I would try would be telnet. Try connecting to both versions of the C++ Application and manually reproducing a proper exchange.
a recv call the return value is a zero. Microsoft insists this is a sign the Java side has shut down the socket.
A correct implementation of recv should return the number of bytes received, or -1 for an error. A zero return indicates no bytes received not a socket closed/error. This sounds like FUD to me.
Are there any known conflicts between Java and C++ in this regard?
I can see no obvious faults, though the code is incomplete, I don't think it's an sockets implementation issue, at either end, it sounds more likely to be a protocol/handshaking bug in the C++ App.

I'm crazy!Applet and JNA Error:Library 'jnidispatch' was not found!

Hi all,
sorry to bother you, I really have no idea how to do JNA and Applet. I'm hardly mazy, man.
Every time it will throw an error to me :
Exception in thread "thread applet-JNAApplet-1" java.lang.UnsatisfiedLinkError: Library 'jnidispatch' was not found by class loader sun.plugin2.applet.JNLP2ClassLoader@291aff
     at com.sun.jna.Native.getWebStartLibraryPath(Native.java:858)
     at com.sun.jna.NativeLibrary.<clinit>(NativeLibrary.java:576)
     at com.sun.jna.Library$Handler.<init>(Library.java:140)
     at com.sun.jna.Native.loadLibrary(Native.java:372)
     at com.sun.jna.Native.loadLibrary(Native.java:357)
     at JNAApplet.init(JNAApplet.java:15)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)My program is so easy, I just want use Applet to revoke JNA and use the JNA to load a native lib.
here is the structure of my program:
Applet code :
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JPanel;
import com.sun.jna.Native;
public class JNAApplet extends JApplet {
     public static Kernel32 kernel32 = null;
     @Override
     public void init() {
          createGUI();
          kernel32 = (Kernel32)Native.loadLibrary("Kernel32", Kernel32.class);
          if (kernel32 == null) {
               System.out.println("load kernel32 fail!");
          } else {
               System.out.println("load kernel32 success!");
     private void createGUI() {
          JPanel panelCenter = new JPanel();
          JButton butTest = new JButton("Test");
          panelCenter.add(butTest);
          setContentPane(panelCenter);
}When I run it on debug mode, it is ok! but when I deploy it , it will throw above error message to me.
My Applet html:
<html>
     <head>
          <title>JNA Applet</title>
     </head>
     <body>
     <script src="deployJava.js"></script>
    <script>
        var attributes = { code:'JNAApplet', width:300, height:300} ;
        var parameters = {jnlp_href: 'JNAApplet.jnlp'} ;
        deployJava.runApplet(attributes, parameters, '1.5');
    </script>
     </body>
</html>File 'JNAApplet.jnlp':
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="" href="">
    <information>
        <title>JNA Applet</title>
        <vendor>Steven</vendor>
    </information>
    <resources>
        <j2se version="1.5+"
              href="http://java.sun.com/products/autodl/j2se" />
        <jar href="JNAApplet.jar" main="true" />
    </resources>
    <applet-desc
         name="JNA Applet"
         main-class="JNAApplet"
         width="300"
         height="300">
     </applet-desc>
     <update check="background"/>
</jnlp>     I really have no idea. and I can't search any usefull infomation from Google and officer site.
Can any one help me? Thank you very much!!!!

Hi AndrewThompson64:
Did you mean the JNA project? Or are you refering to JNI, or ..something else?Yes, I mean is that I wanna jna.jar to replace JNI to code with Applet. I want Applet can run native library(.dll files).
That reads like so much nonsense to me.Sorry fo that.
Was there any 'caused by' part that you trimmed? I expected to see something to do with 'Security' or 'AccessControl'.Sorry, I can't saw any 'cause by' subsentence there. This message is just gain from Applet Console.(Is there any method to gain more message?)
About 'Security' and 'AccessControl' I just modify my java.policy file to allpermission. Subsequently, I signed all jar files.
For now I have 3 jar files(all have been signed ):
--example.jar : for this little program.(code include applet and application entry)
--jna.jar
--win32-x86.jar : include kernel32.dll and jnidispatch.dll for win32 and x86.
and 2 JNLP files:
--JNAApplet.jnlp the entry is JNAApplet.class (this jnlp does not work)
--JNAApp.jnlp     the entry is JNAApp.class (this jnlp works)
And for now new error message show like this:
Exception in thread "thread applet-JNAApplet-1" java.lang.UnsatisfiedLinkError: Library 'Kernel32' was not found by class loader sun.plugin2.applet.JNLP2ClassLoader@4aeb52
     at com.sun.jna.Native.getWebStartLibraryPath(Native.java:858)
     at com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:97)
     at com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:228)
     at com.sun.jna.Library$Handler.<init>(Library.java:140)
     at com.sun.jna.Native.loadLibrary(Native.java:372)
     at com.sun.jna.Native.loadLibrary(Native.java:357)
     at JNAApplet.init(JNAApplet.java:12)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Did you mean invoke?
Revoke: To annul by withdrawing.
Invoke: To call on.Yes, you got it. Thank you.
The JNLP file is invalid. ..I was about to put my 'standard' text here, but I'm sick of saying it. Search the forum for my posts - 50% of them, at least, mention validation and how to go about it.
Also, the applet-desc requires a documentbase.Thank you, I really think I have some invalid section. But I can't find it, and you said 'Search the forum for my posts - 50% of them...' , I can read the JNLP structure on site of sun and I can to read you post too(I'm doing like this).*I only want to know about how to load "native lib like *.dll" properly*.
What 'officer site'?I mean jna project site. Sorry for ambiguity.
Please fix that sticky '!' key. One '!' indicates astonishment, while two or more typically indicates a bozo. Thanks for your advice. Because I tried to find solution do my best lasting two days. I got nothing. I'm sadness.
here post my new files:
import javax.swing.JFrame;
import com.sun.jna.Native;
public class JNAApp {
     public static Kernel32 kernel32 = null;
     public static void main(String[] args) {
          // TODO Auto-generated method stub
          kernel32 = (Kernel32)Native.loadLibrary("Kernel32", Kernel32.class);
          JFrame frame = new JFrame();
          frame.setSize(500, 500);
          frame.setVisible(true);
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JPanel;
import com.sun.jna.Native;
public class JNAApplet extends JApplet {
     public static Kernel32 kernel32 = null;
     public void init() {
          createGUI();
               kernel32 = (Kernel32)Native.loadLibrary("Kernel32", Kernel32.class);
     private void createGUI() {
          JPanel panelCenter = new JPanel();
          JButton butTest = new JButton("Test");
          panelCenter.add(butTest);
          setContentPane(panelCenter);
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="" href="">
    <information>
        <title>JNA Applet</title>
        <vendor>Steven</vendor>
    </information>
    <resources>
        <j2se version="1.5+"
              href="http://java.sun.com/products/autodl/j2se" />
         <jar href="JNAApplet.jar" main="true"/>
         <jar href="jna.jar"/>
    </resources>
       <resources os="Windows" arch="x86">
         <nativelib href="win32-x86.jar"/>
         <nativelib href="kernel32.jar"/>
       </resources>
    <applet-desc
         documentBase=""
            name = "success"
         main-class="JNAApplet" width = "200" height = "200">
     </applet-desc>
     <update check="background"/>
       <security>
         <all-permissions/>
       </security>
</jnlp>
<?xml version="1.0" encoding="UTF-8"?>
<jnlp spec="1.0+" codebase="" href="">
    <information>
        <title>JNA Applet</title>
        <vendor>Steven</vendor>
    </information>
    <resources>
        <j2se version="1.5+"
              href="http://java.sun.com/products/autodl/j2se" />
         <jar href="JNAApplet.jar" main="true"/>
         <jar href="jna.jar"/>
    </resources>
       <resources os="Windows" arch="x86">
         <nativelib href="win32-x86.jar"/>
         <nativelib href="kernel32.jar"/>
       </resources>
    <application-desc
         main-class="JNAApp">
     </application-desc>
     <update check="background"/>
       <security>
         <all-permissions/>
       </security>
</jnlp>     Thanks & Best Regards,
Su Heng

Deploy Applet and MySQL - how to read and write

Question on deploying Applet and MySQL
I am building an applet that is to be a part of a simple game. The applet is supposed to read data from a MySQL server and use it to place towns on the map. In addition, the applet must be able to write to the base.
I have build a prototype and ran it in netbeans on my computer. It then successfully read data from a local MySQL base. HOWEVER; when I embed the applet in html code it no longer reads from the base. My method for connecting to the base is
try{
Statement stmt;
ResultSet rs;
Class.forName("com.mysql.jdbc.Driver");
String url=adress;
Connection con=DriverManager.getConnection(url, user, user);
stmt=con.createStatement();
rs=stmt.executeQuery("SELECT * " +
"from "+table+" ORDER BY id");
while(rs.next()){
get data...
Town T=new Town(data...); //construct town object
TL.put(T); //put town objects in an object TownList to use later
con.close();
catch(Exception e){
So;
1) Why wont the applet read anymore?
2) Is there a better way to do this? I have heard that its better to connect applets to servlets in some situations. What demands does this place on the server? Is there software that you need to install on the server to use servlets?

I think I do need an applet. The map I have written permits a lot of features that I dont know how to achieve in another way.
1) Zooming in and out on mousewheel
2) Clicking on on two towns gives the distance and by selecting a trooptype one can get information about the traveltime between cities.
3) Right now, I have a feature to find players or groups of players that are of special interest. It allows a player to submit a list of interesting players. The applet reads this list and provides a button with the players name. If one clicks the name of a player, all his cities flash between their originall color and white (using thread).
I need java to do this and I need to run it in a webbrowser because there are som parts of the game that is made up of php. So I assume I have to build it as an applet?

HELP! How to get an applet and place it into an application?

Hi,
We have a third party java applet that runs on a specific server. We don't have the code for this applet, only the .class file. We usually connect to the server using any browser with HTTP protocole like http://ourServer. Then we are asked for our username and password and then the applet loads and we can run it. The applet is design to remotely control a piece of equipment. The applet runs on the server and directly coomunicate with this piece of equipment and gives us bak some information into a graphic interface.
What we want to do is to integrate the applet into one of our stand alone application to eliminte the need for a browser. Since Applet can be add directly into any Panel I've tried something like :
public myApp() {
     Container c = getContentPane();
     ThirdPartyApplet myApplet = new ThirdPartyApplet();
     c.setLayout(new BorderLayout());
     c.add(myApplet,BorderLayout.CENTER);
     myApplet.init();
Of course I've a local copy of the .class file and I've included it into my ClassPath. I can get the interface this way but I can't run it, nothing seems to work.
I'm not an expert in applet, I don't know how this one works, but it seems that we need to get the one on the server and run it, just as a browser would do. We've also tried to integrate a Browser into our app. We've tried NetClue and IceBrowser but only IceBrowser seems to work perfectly with our applet and we don't have the money for an IceBrowser license.
So what is wrong with the integration of an applet into a stand alon application?? How do I simulate a Browser and get the applet from the server?
Can anyone help me on this one?
Thanks
Steeves

There's a link to download the Java source on this page.
http://java.sun.com/j2se/downloads.html
Once you have it, look for the appletviewer source in
src\share\classes\sun\applet

Applets and server scripts

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