Using applet in j2sdkee1.2.1(sun server)

hi
i have one applet class which i want to use in jsp page. i want to know where i have to keep applet class in sun server while deploying the application
thanks

PLZZ tell me how i can use applet in jsp using sun server.
nobody in this forum helping me on this topic!!
atleast tell me probable things that i can do....
waiting for reply.
thanks

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Hello everybody,
I am facing problem in connecting to remote server using Applet in browser. I am using JDK 1.5.0_12 and running the application on apache 2.2.
Firstly I have tried with simple jar file which could not connect to remote server and throws permission denied than now I am trying with signed jar file but also not working. I have changed the java.policy file of JDK in server with grant all Permission but also it throws "java.security.AccessControlException:access denied(java.net.SocketPermission 127.0.0.1:1521 connect, resolve)".
Can anybody suggest me how to solve this problem?
Thank You.
-Ritesh

>
I am facing problem in connecting to remote server using Applet in browser.
Firstly I have tried with simple jar file which could not connect to remote server and throws permission denied than now I am trying with signed jar file but also not working. >Were you prompted to accept the digitally signed code? To see what I mean, check out the [Defensive loading of trusted applets demo|http://pscode.org/test/docload/]. If you are not getting the prompt, or refused it, follow the link to sandbox.html for tips on how to proceed.

Client Server program using Applets for client

Creating a client server program using Applets for the clients.
Having problems distrubting the message from client to client
using ObjectOutputStreams/ObjectInputSteams.
I can connect each client to simple server and respond with by writting
the i/o stream of each client but unable to communicate from client to client. If any one out there has in tips of creating a class of objectOutputStreams that holds a array of ObjectOutputStreams and then broadcasts the message to every client, it would be much appreciated
Thanks.

Cheers poop for your reply
I never explained the problem properly. What it is I am trying to set up a Client Server program using Applets as the clients GUI. The problem is broadcasting the message to multiply client connnection(s).
Below is code, each client can connect and send message to the server. The problems is broadcasting the message to every client connection. The every client can input a message but only the last connected client can receive the message?????? Thanks in advance..
/*this my server class */
import java.io.*;
import java.net.*;
public class Server extends JFrame
private static final int ServerPort=8080;
private static final int MaxClients=10;
private ObjectOutputStream output=null;
private ObjectInputStream input=null;
private BroadCastMessage broadcastMessage;
public void runServer()
BroadCastMessage broadcastMessage= new BroadCastMessage();
try
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while (state.getConnectionCount()>0);
System.exit(0);
}catch (IOException e){}
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/*this is my socket connection thread*/
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.net.*;
public class SocketConnection implements Runnable
private ObjectOutputStream out;
private ObjectOutputStream output=null;
private ObjectInputStream input=null;
private BroadCastMessage passOnMessage;
private Socket theConnection=null;
private String Inmessage="";
private int Ocount;
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try
getStreams();
processConnection();
catch(Exception e)
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{ //get streams to send and receive data
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my thinking was that you could create a array of objectoutputstreams
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import java.net.*;
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private int count;
private String Inmessage="";
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private ObjectOutputStream[] output = new ObjectOutputStream [12];
//temp level of array of objects
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count=0;
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System.out.print(count);
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{ System.out.print(count);
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{ioException.printStackTrace();}
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Applet does not load on app server when Free Design Layout

Hi,
I have to embed a an applet in a webpage of an web application. Before I go on to anything.. let me first tell you, I am using Netbeans 6.0
As shown in the tuorial:
[http://www.netbeans.org/kb/articles/tutorial-applets-40.html]
1. I first made the "Applet" source say HelloApplet. java. After compiling and running it I get the HelloApplet.jar.
2. I created a WebApplication and then from the properties -> packaging -> I "Add Project" HelloApplet.jar.
3. Then I a webpage I "embeded" the applet.
4. I run the web app and the applet gets loaded and everything is just fine.
But before I go on I must tell you that the applet was designed in Null Layout. Now I edited the applet source once again and changed the layout to Free Design Layout*. ( this is available from Netbeans..on the HelloApplet.java .. go to the design view.. right click on the form and from the context menu you can change the layout to FreeDesign or whatever you might want).
When I expand the "Libraries" node I see the that the library Swing Layout Extensions - swing-layout-1.0.3.jar has been added.
When I "run" the "HelloApplet.java" file, the applet is shown in the appletviewer. No problems with that.
But!
When I try to Clean & Build and Run the WebApplication, the applet does not get loaded. On inspecting the java console I see the following error:
java.lang.NoClassDefFoundError: org/jdesktop/layout/GroupLayout$Group
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
at java.lang.Class.getConstructor0(Unknown Source)
at java.lang.Class.newInstance0(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.plugin.AppletViewer.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.jdesktop.layout.GroupLayout$Group
at sun.applet.AppletClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
... 10 moreIt clearly shows that the Free Design Layout has something to do with the GroupLayout which can be found by expanding the "Swing Layout Extensions - swing-layout-1.0.3.jar". Now when the HelloApplet.jar is created only the HelloApplet.class file gets included together with some other data but NOT the swing extensions. Hence when I run the web app the class file looks for the GroupLayout.class definition but can find it in the jar as its not included when the HelloApplet.jar is created.
But with null layout there isint a problem because null layout takes the definitions from the JRE on the machine.. and so it runs without a hitch.
My Question is : How can I run the applet with Free Design Layout? or is it possible to package the swing layout extensions in the HelloApplet.jar?<</u>
Thanks for all your replies.
Cheers.
Edited by: arijit_datta on May 15, 2008 4:07 PM

Solved.
Here is the solution:
[http://www.nabble.com/Applet-does-not-load-on-app-server-when-Free-Design-Layout-to17259115.html|http://www.nabble.com/Applet-does-not-load-on-app-server-when-Free-Design-Layout-to17259115.html]
Cheers..
Edited by: arijit_datta on May 16, 2008 7:41 AM

Problem in connect database using applet

hi
please
i want open database in page html with use Applet
i use this code but database not work in the my page
if this code have problem
please correct this code to open database in page html
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con = DriverManager.getConnection(
"jdbc:odbc:DRIVER=Microsoft Access Driver (*.mdb);DBQ=C:\\hwzyfa.mdb ");
sta = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_UPDATABLE);
res = sta.executeQuery("select * from aha");
this is my code
package orcle;
import java.sql.*;
import java.awt.*;
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<applet code="test.class" width=200 height=200>
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Statement stmt = null;
ResultSet rs = null;
String str=null;
TextArea ta;
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add(ta);
Button b1 = new Button(">>");
add(b1);
b1.addActionListener(this);
ta.setText("Initialization...\n");
public void start() {java.applet.AudioClip a= Applet.newAudioClip(Applora.class.getResource("a.mid"));
a.play();
public void actionPerformed(ActionEvent ae)
ta.appendText("Inside actionPerformed\n");
try
ta.appendText("Inside try block\n");
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
ta.appendText("Class loaded\n");
/********** upto this point it works fine **************/
con=DriverManager.getConnection("jdbc:odbc:DRIVER=Microsoft Access Driver (*.mdb);DBQ=C:\\hwzyfa.mdb ");
ta.appendText("Connection created\n");
stmt=con.createStatement();
ta.appendText("Statement created\n");
rs=stmt.executeQuery("select * from aha");
ta.appendText("Resultset created\n");
while(rs.next())
str=str+rs.getString(2)+" "+"\n";
//str=str+rs.getString(2)+" "+"\n";
ta.appendText(str);
con.close();
stmt.close();
rs.close();
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i want access to database in page html with use AppletFirst of all, that doesn't make any sence, if it's a single user application make it a java
application.
If it's a multu user application make it a client server where the web server connects to
the database when the client requests a connection.
When the applet connects to the database any client running the applet needs a
connection to your database server, the client needs the jdbc drivers and the client's
jre needs to find them (set classpath with runtime parameters or set the classes in
javadir lib). After that the client needs to change thiere java.policy or you need to sign
the applet.
Needless to say that's a lot of trouble. And if you go through all that trouble the client
can de-compile your applet and see the connection to the database server and the
server name. Now the client can destroy your database or worse see date it is not
supposed to see.
Since you are a brainless ... who needed to post this question 6 times did not respond to any of my post in your other threads I can just say good luck with your problem.

How to access a file using Applet?

Dear all,
I would like to use an applet to read and display information on server side, but there still a fileaccess permission denied, what can i do?
The idea of the web service is like that::
1.User connected to a webpage, than they can choose the file and then,
2. the file name will be transfered into the applet (using applet><param> tags etc.)
3. THe applet read and displays information.
In addition, the file is placed at server side, should I set the "./hotjava/ properties "

Maybe you should sign your applet.
You'll find further information in the Signed Applets Forum:
http://forum.java.sun.com/forum.jspa?forumID=63

List of major websites that use applets?

I keep hearing and reading that applets are obsolete and were used in the 90's mostly. Do any 'major' websites still use them? Is there a list of such websites?
Also, have applets been replaced by JavaFX?
thanks,
William

wwuster wrote:
I keep hearing and reading that applets are obsolete and were used in the 90's mostly. Where do you 'keep hearing' that? URLs to blogs, chat sites, forums or other net based sources, please.
Note that 95% of the jobs in Java seem to have gone primarily 'server side' - from my viewing of job ads on the east coast of Australia. It is more 'client side' development in general (and media handling in particular) that Sun has had any lapse in.
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As to applet advances specifically, there were new (JWS based) functionalities introduced in 1.6.0_10 and new security constraints added in 1.6.0_19, so applets are certainly not a forgotten technology in the view of Sun/Oracle.
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Also, have applets been replaced by JavaFX?No.

Using applets

I have a web application that contains a servlet, applet, jsps, html, etc. The applet classes are
packaged in a jar file in the <web app root>/classes directory. On the root, I have an html page
that is supposed to access the applet. Any time I go to this page, the applet classes cannot be
found. I'm using the same web app on a different application server, and everything works fine. Has
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Here is my html code for displaying the applet...
<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
WIDTH = 100% HEIGHT = 100%
codebase="http://java.sun.com/products/plugin/1.3/jinstall-13-win32.cab#Version=1,3,0,0">
<PARAM NAME=CODE VALUE = "com.mxi.mx.expeditor.applet.ExpeditorApplet" >
<PARAM NAME=ARCHIVE VALUE = "ExpeditorApplet.jar" >
<PARAM NAME="codebase" VALUE = "classes/" >
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.3">
</OBJECT>
</BODY>
Josh Cimino
Software Developer
Mxi Technologies Ltd.
1430 Blair Place, Suite 800
Ottawa, ON, Canada
K1J 9N2
E: [email protected]
T: 613.747.4698 ext 479
F: 613.747.1909
www.mxi.com
"From the flight line to the bottom line"
[att1.html]

I hope I'm making at least some sense here. The classes extending Applet are to be shown in a web browser, embedded on the page. A class with nothing but a main-method would traditionally be a command-line application. Extending Frame results in a stand-alone application with a visible window, a GUI. They are all correct, it just depends on what you want to create.

Can we use applets as user interfaces with sockets, RMI and J2EE

Dear Sir or Madam,
Since I am a TA for software architecture class, some one ask me the following question: I think the answer is "No" based on the document on http://java.sun.com/sfaq/
How I answer the quesions? Looking forward your help!!!
1.You may have 2 applets and 2 html files. One applet with one html file may stay at a client PC and run on this PC, and the other applet with the other html file may stay at a server PC and run on this PC. In this case, all the applets are run locally.
2.Could applets works with sockets, RMI and J2EE?
3.Can we use applets as user interfaces with sockets, RMI and J2EE?
Thank you very much!
Best regards,
Jing

The scenario you paint doesn't quite make sense. The "server PC" wouldn't be running an applet, normally, since applets are by definition in a web browser page, and most likely involve user interaction, and "server processes" generally are done without user interaction.
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If you want two applets on two different systems to communicate with each other, the simplest way is to have them rendevous through a server process on the server(s) from whence each applet was loaded. Maybe it's PC-a <-> server-a <-> server-b <-> PC-b ...? Or maybe PC-a and PC-b both are talking to the same server.
The limitation is rooted in the security subsystem. You can specify a policy file and override anything in the security subsystem. That does mean signing the applet and then cajoling the user into agreeing to grant greater levels of security than the default. In such a case you can open sockets more broadly and then PC-a could talk directly to PC-b without going through any servers.
- David

How can I use applet to get the desktop image of client

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I have done an application to get the screen image and do upload file to server in a servlet with the http protocal.

Since the desktop image is on the client's local hard drive, you'll need to look at trusted applets first.

Error while running PING program using applet. Pls correct the code.-urgent

Can anyone pls correct the error in the below code.
Program : TestExec1
Using : Applet
Logic : Trying to display the ping status in the text area but it returns error...!
CODING
import java.awt.*;
import java.lang.*;
import java.io.*;
import java.net.*;
import java.awt.event.*;
import java.applet.*;
import java.*;
/*<applet code="TestExec1" width=380 height=150>
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String line = null;
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                    BufferedReader in = new BufferedReader(new InputStreamReader(p.getInputStream()));
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                         outputArea.append("\n" + line);
                         System.out.println(line);
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Error : C:\Program Files\Java\jdk1.6.0_02\bin>appletviewer TestExec1.java
java.security.AccessControlException: access denied (java.io.FilePermission <<AL
L FILES>> execute)
at java.security.AccessControlContext.checkPermission(AccessControlConte
xt.java:323)
at java.security.AccessController.checkPermission(AccessController.java:
546)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
at java.lang.SecurityManager.checkExec(SecurityManager.java:782)
at java.lang.ProcessBuilder.start(ProcessBuilder.java:447)
at java.lang.Runtime.exec(Runtime.java:593)
at java.lang.Runtime.exec(Runtime.java:431)
at java.lang.Runtime.exec(Runtime.java:328)
at TestExec1.start(TestExec1.java:31)
at sun.applet.AppletPanel.run(AppletPanel.java:458)
at java.lang.Thread.run(Thread.java:619)
Regards
ESM

java.security.AccessControlException: access denied (java.io.FilePermission
<<ALL FILES>> execute)This message tells you that the applet does not have permission to access/execute files. Access may be granted by either signing the applet, which allows the user to grant (or not grant) the access when running the applet, or by adding the necessary permission file to the user's computer.
See http://java.sun.com/javase/6/docs/technotes/guides/security/index.html

Sun server - file not found warning message - send-file reports: HTTP4142

(File not found)
[25/Sep/2012:17:37:34] warning ( 9732): for host 127.0.0.1 trying to GET /vt/css/body_ie8.css, send-file reports: HTTP4142: can't find C:/Program Files/Sun/WebServer7/https-AC7440R877W6X.com/web-app/AC7440R877W6X.com/vt/css/body_ie8.css.
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I m running JSF framework icefaces implememntation

Hi:
After some days and several test I discover the solution.
I'm using Unicodes in the messages text (like \u00e9, \u00e1) and due to a typing mistake, in just a word the sequence \u00es appears instead of \u00e9.
It seems \u00es is not a valid Unicode code and that was the cause of this particular error.
I think this kind of message error must change depending which web server is used.
As i said, i'm using the embedded oc4j server.
Bye.

Using applet in j2sdkee1.2.1(sun server)

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