Problem with Appletviewer

I am typing the exact path to my class file and I get this error.....
I/O exception while reading "C:\Blah, blah" (The filename, directory name or volume doesn't exist)
WHY!!!!!??? I am cutting and pasting the path into the dos prompt.

The appletviewer program expects to get a HTML file as a parameter, not a class file.
Actually the file type does not matter; appletviewer only checks if it has any <applet>-tags and tries to start the applets. .class files usually don't have <applet>-tags, so the program exits silently.
Don't you get the "I/O exception" anymore?

Similar Messages

Problem with AppletViewer in Forte

Hi,
my applet runs fine when the 1.4 appletviewer is called from the command line, it also runs fine when executing the forte-generated html-file from forte, but the appletviewer won't start from forte (applet debugging and applet execution set)
when i try to execute my applet from forte, the process starts, runs 1 or two seconds, and terminates without showing any messages (errormessages).
any ideas? thanks in advance...

J2ME forte integration destroyed something in my forte-projects-folder. Uninstall was not enough, i had to rename this folder and create a new one.

Problem with appletViewer.exe

After installed JDK1.4.1 on my system (Win2000, SP3), I tried to run a very simple java applet. But I got the exception like the following:
F:\javaTest>appletviewer Hello.html
Exception in thread "main" java.util.MissingResourceException: Can't find resource for bundle sun.applet.resources.MsgA
pletViewer, key appletpanel.badattribute.exception
at java.util.ResourceBundle.getObject(ResourceBundle.java:314)
at java.util.ResourceBundle.getString(ResourceBundle.java:274)
at sun.applet.AppletMessageHandler.getMessage(AppletMessageHandler.java:39)
at sun.applet.AppletPanel.showAppletStatus(AppletPanel.java:755)
at sun.applet.AppletPanel.init(AppletPanel.java:190)
at sun.applet.AppletViewer.<init>(AppletViewer.java:177)
at sun.applet.StdAppletViewerFactory.createAppletViewer(AppletViewer.java:82)
at sun.applet.AppletViewer.parse(AppletViewer.java:1122)
at sun.applet.AppletViewer.parse(AppletViewer.java:1056)
at sun.applet.Main.run(Main.java:138)
at sun.applet.Main.main(Main.java:80)
Anyone has idea what's the cause?
Thanks in advanced.

http://search.java.sun.com/search/java/index.jsp?qp=&nh=10&qt=%2Bappletviewer%2C+%2B%22find+resource+for+bundle%22&col=javaforums&x=25&y=9

Cant load SwingApplet in IE5.0, works with appletviewer

hello again
I Can't load a SwingApplet in IE5.0, there are no problems with appletviewer.
with IE5.0 I get "class aaa.Bcd" not found - error, and the java-console shows this:
java.lang.ClassNotFoundException: javax.swing.JApplet
     at com/ms/vm/loader/URLClassLoader.loadClass
     at java/lang/ClassLoader.loadClassInternal
     at java/lang/ClassLoader.resolveClass
     at com/ms/vm/loader/URLClassLoader.loadClass
     at com/ms/vm/loader/URLClassLoader.loadClass
     at com/ms/applet/AppletPanel.processSentEvent
     at com/ms/applet/AppletPanel.processSentEvent
     at com/ms/applet/AppletPanel.run
     at java/lang/Thread.run
As awt.applets are displayed it seems that IE5.0 doesn't
know Swing !
So what is to do ?
So does it make sense to use swing in applets, assuming that not everybody has a swing-enabled browser, and ( like me ) does not know how to make the browse "swing"ing ?
Hanns
A

This is what the HTML file will look like after converting
the code using HTML converter.And the java plugin link
also specified in this , cut and paste the link and use it.
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<title>Business Tool</title>
</head>
<body>
<h1>Business Tool</h1>


<SCRIPT LANGUAGE="JavaScript"></SCRIPT>
<COMMENT><SCRIPT LANGUAGE="JavaScript1.1"></SCRIPT></COMMENT>
<SCRIPT LANGUAGE="JavaScript"></SCRIPT>
<APPLET CODE = CompTree CODEBASE = "." ARCHIVE = "TreeDemo.jar" WIDTH = 795 HEIGHT = 525></XMP>
<PARAM NAME = CODE VALUE = CompTree >
<PARAM NAME = CODEBASE VALUE = "." >
<PARAM NAME = ARCHIVE VALUE = "TreeDemo.jar" >
<PARAM NAME="type" VALUE="application/x-java-applet;jpi-version=1.3.1">
<PARAM NAME="scriptable" VALUE="false">
</APPLET>
</NOEMBED></EMBED></OBJECT>


</body>
</html>
bye

Problem with socket permissions!

Hi All!
I'm developing an applet that displays an image after downlading it from a server; this server is different from the server I download the applet from, so I have problems with security. In fact I get the following exception:
java.security.AccessControlException: access denied (java.net.SocketPermission 172.16.1.22:8080 connect,resolve)
I'm using:
- Java Plugin 1.3;
- Netscape 7.0;
- IE 6;
I've tried to self-sign the applet but with no results (maybe I cannot use selfsigned certificate with java plugin 1.3);
After that I've created a new policy file ("MyPolicy" file)and mentioned it into:
C:\Program Files\JavaSoft\JRE\1.3.1_03\lib\security\java.policy
but it didn't resolve my problem (maybe I'm doing something wrong in creating my policy file??!!).
Which steps do I have to follow in order to make my applet connect to images server without security problems?
Thanks so much in advance,
Carlo

1.     Compile the applet
2.     Create a JAR file
3.     Generate Keys
4.     Sign the JAR file
5.     Export the Public Key Certificate
6.     Import the Certificate as a Trusted Certificate
7.     Create the policy file
8.     Run the applet
Susan
Susan bundles the applet executable in a JAR file, signs the JAR file, and exports the public key certificate.
1.     Compile the Applet
In her working directory, Susan uses the javac command to compile the SignedAppletDemo.java class. The output from the javac command is the SignedAppletDemo.class.
javac SignedAppletDemo.java
2.     Make a JAR File
Susan then makes the compiled SignedAppletDemo.class file into a JAR file. The -cvf option to the jar command creates a new archive (c), using verbose mode (v), and specifies the archive file name (f). The archive file name is SignedApplet.jar.
jar cvf SignedApplet.jar SignedAppletDemo.class
3.     Generate Keys
Susan creates a keystore database named susanstore that has an entry for a newly generated public and private key pair with the public key in a certificate. A JAR file is signed with the private key of the creator of the JAR file and the signature is verified by the recipient of the JAR file with the public key in the pair. The certificate is a statement from the owner of the private key that the public key in the pair has a particular value so the person using the public key can be assured the public key is authentic. Public and private keys must already exist in the keystore database before jarsigner can be used to sign or verify the signature on a JAR file.
In her working directory, Susan creates a keystore database and generates the keys:
keytool -genkey -alias signFiles -keystore susanstore -keypass kpi135 -dname "cn=jones" -storepass ab987c
This keytool -genkey command invocation generates a key pair that is identified by the alias signFiles. Subsequent keytool command invocations use this alias and the key password (-keypass kpi135) to access the private key in the generated pair.
The generated key pair is stored in a keystore database called susanstore (-keystore susanstore) in the current directory, and accessed with the susanstore password (-storepass ab987c).
The -dname "cn=jones" option specifies an X.500 Distinguished Name with a commonName (cn) value. X.500 Distinguished Names identify entities for X.509 certificates.
You can view all keytool options and parameters by typing:
keytool -help
4.     Sign the JAR File
JAR Signer is a command line tool for signing and verifying the signature on JAR files. In her working directory, Susan uses jarsigner to make a signed copy of the SignedApplet.jar file.
jarsigner -keystore susanstore -storepass ab987c -keypass kpi135 -signedjar SSignedApplet.jar SignedApplet.jar signFiles
The -storepass ab987c and -keystore susanstore options specify the keystore database and password where the private key for signing the JAR file is stored. The -keypass kpi135 option is the password to the private key, SSignedApplet.jar is the name of the signed JAR file, and signFiles is the alias to the private key. jarsigner extracts the certificate from the keystore whose entry is signFiles and attaches it to the generated signature of the signed JAR file.
5.     Export the Public Key Certificate
The public key certificate is sent with the JAR file to the whoever is going to use the applet. That person uses the certificate to authenticate the signature on the JAR file. To send a certificate, you have to first export it.
The -storepass ab987c and -keystore susanstore options specify the keystore database and password where the private key for signing the JAR file is stored. The -keypass kpi135 option is the password to the private key, SSignedApplet.jar is the name of the signed JAR file, and signFiles is the alias to the private key. jarsigner extracts the certificate from the keystore whose entry is signFiles and attaches it to the generated signature of the signed JAR file.
5: Export the Public Key Certificate
The public key certificate is sent with the JAR file to the whoever is going to use the applet. That person uses the certificate to authenticate the signature on the JAR file. To send a certificate, you have to first export it.
In her working directory, Susan uses keytool to copy the certificate from susanstore to a file named SusanJones.cer as follows:
keytool -export -keystore susanstore -storepass ab987c -alias signFiles -file SusanJones.cer
Ray
Ray receives the JAR file from Susan, imports the certificate, creates a policy file granting the applet access, and runs the applet.
6.     Import Certificate as a Trusted Certificate
Ray has received SSignedApplet.jar and SusanJones.cer from Susan. He puts them in his home directory. Ray must now create a keystore database (raystore) and import the certificate into it. Ray uses keytool in his home directory /home/ray to import the certificate:
keytool -import -alias susan -file SusanJones.cer -keystore raystore -storepass abcdefgh
7.     Create the Policy File
The policy file grants the SSignedApplet.jar file signed by the alias susan permission to create newfile (and no other file) in the user's home directory.
Ray creates the policy file in his home directory using either policytool or an ASCII editor.
keystore "/home/ray/raystore";
// A sample policy file that lets a JavaTM program
// create newfile in user's home directory
// Satya N Dodda
grant SignedBy "susan"
     permission java.security.AllPermission;
8.     Run the Applet in Applet Viewer
Applet Viewer connects to the HTML documents and resources specified in the call to appletviewer, and displays the applet in its own window. To run the example, Ray copies the signed JAR file and HTML file to /home/aURL/public_html and invokes Applet viewer from his home directory as follows:
Html code :
</body>
</html>
<OBJECT classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"
width="600" height="400" align="middle"
codebase="http://java.sun.com/products/plugin/1.3/jinstall-13-win32.cab#Version=1,3,1,2">
<PARAM NAME="code" VALUE="SignedAppletDemo.class">
<PARAM NAME="archive" VALUE="SSignedApplet.jar">
<PARAM NAME="type" VALUE="application/x-java-applet;version=1.3">
</OBJECT>
</body>
</html>
appletviewer -J-Djava.security.policy=Write.jp
http://aURL.com/SignedApplet.html
Note: Type everything on one line and put a space after Write.jp
The -J-Djava.security.policy=Write.jp option tells Applet Viewer to run the applet referenced in the SignedApplet.html file with the Write.jp policy file.
Note: The Policy file can be stored on a server and specified in the appletviewer invocation as a URL.
9.     Run the Applet in Browser
Download JRE 1.3 from Javasoft

Applet not working in browser, works with appletviewer

Hi,
I'm trying to use an Applet program from the tutorials which keeps on displaying time in the HTML page:
import java.awt.Graphics;
import java.util.*;
import java.text.DateFormat;
import java.applet.Applet;
public class home_page extends Applet implements Runnable {
    private Thread clockThread = null;
    public void init()
    public void start() {
        if (clockThread == null) {
            clockThread = new Thread(this, "Clock");
            clockThread.start();
    public void run() {
        Thread myThread = Thread.currentThread();
        while (clockThread == myThread) {
            repaint();
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e){
            // the VM doesn't want us to sleep anymore,
            // so get back to work
    public void paint(Graphics g) {
        // get the time and convert it to a date
        Calendar cal = Calendar.getInstance();
        Date date = cal.getTime();
        // format it and display it
        DateFormat dateFormatter = DateFormat.getTimeInstance();
        g.drawString(dateFormatter.format(date), 5, 20);
    // overrides Applet's stop method, not Thread's
    public void stop() {
        clockThread = null;
}When i use this program in the browser, i cannot see the clock but i'm able to see only a gray box. I'm using the applet tag within the HTML page.
I can see the same compiled applet running successfully with appletviewer program.
Please help me out of this predicament.
-Manish

I have recently had the same problem, after lots of searching, I found that only Java 1.1 is supported by browsers, leaving out everything else including swing. So if you cant play the applet through your browser you need to download the appropriate patch i think about 5mbs.
You should find one at java.sun.com/getjava/download.html
Mine worked fine afterwards

Problem with 'Edit Locally' command -- Due to IISProxy?

Hi,
We have a problem with 'Edit Locally' command since we are using Windows Authentication. Our architecture is:
SAP EP 6.0 SP2 Patch 28 (Solaris)
IIS Proxy (Windows 2003)
The situation is:
If we access to SAP Portal using old url (directly to Solaris) using form-based authentication we do not have any problem with 'edit locally' command.
However, if we access to SAP Portal using IISProxy and Windows Authentication we get an 'Operation failed' error message.
     Java plug-in console shows the following message:
cargar: clase com/sapportals/wcm/app/docapplet/DocApplet.class no encontrada.
java.lang.ClassNotFoundException: com.sapportals.wcm.app.docapplet.DocApplet.class
     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 sun.applet.AppletClassLoader.loadCode(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.io.IOException: open HTTP connection failed.
     at sun.applet.AppletClassLoader.getBytes(Unknown Source)
     at sun.applet.AppletClassLoader.access$100(Unknown Source)
     at sun.applet.AppletClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     ... 10 more
Where is the problem? Is due to authentication method? SAP Portal or IISProxy configuration?
Thanks,

Thanks for your comment,
Now, we have tested with version 1.5.0_01 plugin version but the result is the same: 'Operation failed'
This is a very important topic to solve before installing Windows Authentication in a productive environment.
Has anybody any solution?
Damiá

Problems with java j2re using mozilla

Hi,
i'm using j2re1.4.2_05 plugin for mozilla in linux (Fedora Core 2). My internet access goes throught a router (SMC Networks ISDN Barricade SMC7301TA). It's settings can be edited throught a web browser LAN connection. And here the problems begin. On routers settings page a java output console (for error and other messages) is running, which doesn't work, despite java applications on other web pages work well (I tested it on sun's java test page and it's working properly). Java console exits the following errorr message:
>
load: class DynamicTable.class not found.
java.lang.ClassNotFoundException: DynamicTable.class
     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 sun.applet.AppletClassLoader.loadCode(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.io.IOException: open HTTP connection failed.
     at sun.applet.AppletClassLoader.getBytes(Unknown Source)
     at sun.applet.AppletClassLoader.access$100(Unknown Source)
     at sun.applet.AppletClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     ... 10 more
Is there a way to fix this problem? Cause without the command output it's mearly unpossible to configure the router.

Yes i can make changes. Not everything is realised with java, just the output console, which reports if the changes i made succeded, prints out logs, gives additional info about some settings etc. So, i can make changes, but i have no response, for example: everytime i save something i don't know if the save was succesful. I can't take a look at IP routing table and DHCP configuration...
On windows xp, using internet explorer (the default version for xp) everything works perfect. But mozilla for windows has also problems with java. I know i can still change settings on wins, but right now i'm having some problems with networking on linux and i have to set things up in it (besides i use wins only because of school purposes).

Weird problem with JApplet

I'm having a weird problem with JApplet. So first I create an Applet with this code
public class japp extends JApplet {
     public void init() {
          Container content=getContentPane();
          JButton jb=new JButton("Hello");
          content.add(jb);
}and with this in the .html file;
<html>
<body>
<APPLET CODE="japp.class" WIDTH="650" HEIGHT="500"></APPLET>
</body>
</html>
And opened it in Firefox, it worked as expected. However, when I change the code in any way, i.e.
public class japp extends JApplet {
     public void init() {
          Container content=getContentPane();
          JButton jb=new JButton("Goodbye");
          content.add(jb);
}and compile it, it still shows the old button that displays "Hello". I've tried deleting the .class file from before and recompiling, that doesn't work. What am I doing wrong?
Thanks.

Reloading the page usually doesn't work. You will need to open the Java Console and clear classloader cache (x). You can also use appletviewer for testing purposes.

Problems with Java 1.5_X installs help required.

Hi All,
Having problems with multiple machines with Java 1.5_X installs, the install ppears to complete successfully, and the version checking on the Java Website says that Java is installed however the checking of the Java Virtual Machine using the webpage on the Java site fails, ends up with a red cross in the right hand corner and opening the java console receive this list of messages:
load: class testvm2/Main.class not found.
java.lang.ClassNotFoundException: testvm2.Main.class
     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 sun.applet.AppletClassLoader.loadCode(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)
Have tried uninstalling and reinstalling to no effect, have tried uninsalling and reinstalling IE to no effect. Please note the problem does not happen when I install 1.6 versions on the same machine but unfortunately I need to get 1.5 working on these machines.
Any help is appreciated.

This is silly. Just because you don't know Vuze doesn't mean there's no problem with this update. My friends are having the same issue, of course we are looking at possible problem from Vuze's part but we cannot really say this update has 100% nothing to do with Vuze's launch failure, can we?
P.S. Since Vuze is not banned by law, it's still legal to use it. It's up to people if they want to use it for good or bad.
dogquake

Problems with applets.

Hi to everybody.
I've got a problem with simple applets.
I've built several applets using Swing components (JApplet, JPanel, JButton, etc.)
In my browser, the background color of my applets does correctly appear.
But none of my components does !!!! No text fields, no buttons etc.
Can someone explain to me which could be the reason of that ?
Thank's.

I've just tried appletviewer. And I discovered that there is a problem while trying to acces to a jpeg file for my JBuutons and JLabel.
Appletviewer considers these files are on the client machine and refuses the acces.
But when I try my site, the server is my computer too ! So the jpegs are on the server side !
Furthermore, when I start my web page (that contains my applets), nothing does appear (no exception) in the java console...
How can I solve this problem (I'm newer with applets)?

Encountering Problems with Basic Sound Tutorial

Hello everyone,
I am encountering problems with a basic sound tutorial. I am absolutely confused as to what the problem may be because the code is so simple, and is essentially copied from the textbook. I am convinced that I have done something very silly but cannot see it.
I have attempted to run this in an appletviewer, Firefox and Internet Explorer. I have attempted to launch it from both a .class file and a .jar file. I have uninstalled and offline installed the JDK and JRE and successfully tested the new installations.
The audio file I am attempting to load and play is an .AU (Sun/Next 8-bit u-law) audio file I created in Audacity. It is located in the same folder as the AudioApplet.class file.
My sound system is defintely on, since I have listened to music all day. I have attempted running the program with Media Player closed.
package edu.myuniversityid.sandbox;
import java.applet.Applet;
import java.applet.AudioClip;
* @author Ibuki
public class AudioApplet extends Applet
     * Initialization method that will be called after the applet is loaded
     * into the browser.
    public void init()
        super.init();
        AudioClip ac = this.getAudioClip(this.getDocumentBase(), "sample.au");
        ac.play();
}The code compiles fine, however absolutely I get a small white window when it is run. No sound.
Thankyou for your time.
Regards,
Ibuki.
PS. I am sure this worked before the university forced me to update my version of Windows to SP2. Hence, the reason for reinstalling Java. Twice.
Edited by: Ibuki on Jan 31, 2008 11:09 AM becasuse: Added a PS.

I have attempted this alternative, without success:
    public void init()
        try
            super.init();
            URL url = new URL(this.getDocumentBase(), "sample.au");
            AudioClip ac = this.getAudioClip(url);
            ac.play();
        catch (MalformedURLException ex)
            Logger.getLogger(AudioApplet.class.getName()).log(Level.SEVERE, null, ex);
    }The sample.au is definetly in the correct directory. Both File Explorer and NetBeans confirm this.
Edited by: Ibuki on Jan 31, 2008 11:59 AM
I have discovered a temporary solution that works in the applet viewer. The applet will load and plays the correct music perfectly. However, using this code it is not working when I try to deploy it using a web browser (MSIE and FF)!
public void init()
        super.init();
        AudioClip ac = this.getAudioClip(this.getClass().getResource("sample.au"));
        ac.play();
Edited by: Ibuki on Jan 31, 2008 12:12 PM
Eureka!
Having worked in the applet viewer I managed to get it working in the web browser by simply packaging my SoundApplet.class and sample.au into a .jar archive.
<html>
     <body>
          <applet code="edu.myuniversityid.sandbox.AudioApplet.class" archive="dist/AudioApplet.jar">Unfortunately, this applet content cannot be displayed on this web page because your current browser does not support Java SE 6! Please <a href="http://www.java.com/">update your version of Java</a>.</applet>
     </body>
</html>
public void init()
        super.init();
        AudioClip ac = this.getAudioClip(this.getClass().getResource("sample.au"));
        ac.play();
    }Thankyou everyone.
This thread can be closed if applicable. I'm not aware of the current moderation policy on this forum.
Edited by: Ibuki on Jan 31, 2008 12:12 PM

Applet problem with IE

hi fellas
I've got quite a stressing problem with my applets.
When I load them in the appletviewer there is no problem, idem in Netscape 7. But when I try with IE I only obtain a grey rectangle.
I thought I had written something wrong and I downloaded a free applet source on the net.
On the site where I downloaded this applet I could see the applet with IE. So I got the Java code and the source of the HTML page.
I compile the .java save the html source into a document and try to load it locally ... still a grey rectangle.
The same applet that I could see on the web page with the same source code embeded in the same html file.
So I thought that maybe my 1.4.0 sdk was the problem and I tried to recompile the .java with a 1.3 sdk ( hoping a compatibility problem )
---> Nothing ... Nothing
This drives me old before the age.
If anybody can help me ...
Thanks

here is the applet code
import java.applet.*;
import java.awt.*;
public class basicApplet extends Applet
     public void init(){}
     public void stop(){}
public void paint(Graphics g)
     g.drawString("Hey hey hey",20,20);
     g.drawString("Hellooow World",20,40);
and his is the html page
<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<body>
<applet code="basicApplet.class" height="100" width="200">
</applet>
</body>
</html>
the html page and the applet are in the same directory.

Still Having Problems With Applets!!!!

First i'd like to thank all who responded to my last post regarding a downloadable copy of the J2SE API Documentation. I have downloaded it and am quite content.
I am still, however having a problem with my applets (all applets at that). Like i said before. I can view any applets i want through the command prompt using appletviewer. My problem is residing in execution directly through Microsoft Internet Explorer 5.x.
When i open the .html file containing my applet, the file loads in the browser but the applet does nothing. When i mouseover the applet a message is displayed in the browser's status bar stating "loading class. classname: class not found".
I have tried every applet i can get my hands on including downloaded applets from applet resource sites (even the example applets that came with the JDK1.4 when i downloaded it). They all react the same way, but will execute fine with the direct command prompt reference to appletviewer.
It's getting very irritating. I have tries everything including setting the classpath in the command prompt. I'm loosing hope of a solution so if anyone might have an idea of what i need to do to fix my problem, or anything i am doing wrong or haven't done, please give me a hint or help.
I am loving the java language and wish to further my knowledge and farmiliarity with it but i need to make sure everything works.
Sorry for rambling and i thank whoever offers a reply in advance.
ChanceH

1. Check the codebase parameter in the html file that calls the applet
for example if you have an applet named MyApplet.class inside a directory applets and your html file outside that directory you should have a codebase like this "applets/".
<applet CODE="MyApplet.class" codebase="applets/" WIDTH=640
HEIGHT=480 ALIGN= center>
</applet>
2. Be sure that your IE support java check the properties and enable the JVM.
3. If your JVM version does not support Java 2, applets build on Java 2 will not work.

Problems with JApplet, jar-Archive, packages and IE5

Hello!
I have a problem with a JApplet and Internet Explorer 5. I made a jar archive of my classes. The classes are
members of a package. The jar archive also contains images.
The structure of the archive:
com/mycomp/myapp/DemoApplication.class
com/mycomp/myapp/DemoApplet.class
<more classes>
com/mycomp/myapp/images/hp_logo.gif
com/mycomp/myapp/images/test.gif
<more images>
The archive is stored locally in a directory which contains also the html file.
I used the sdk 1.3.1 to compile the classes.
My problem: when I start the html file on NT with IE5, I get the error message below:
I try to create a label containing an icon with:
topLabel.setIcon(new javax.swing.ImageIcon(getClass().getResource("images"+fs+"hp_logo.gif")));It works on Sun with Netscape 4.67 and SDK 1.3.1 installed.
Should I move the images directory inside the jar archive to another place or is the html code not correct?
The error message:
java.lang.NullPointerException
     at javax.swing.ImageIcon.<init>(Unknown Source)
     at com.mycomp.myapp.DemoApplication.initComponents(DemoApplication.java:158)
     at com.mycomp.myapp.DemoApplication.<init>(DemoApplication.java:55)
     at com.mycomp.myapp.DemoApplet.<init>(DemoApplet.java:24)
     at java.lang.Class.newInstance0(Native Method)
     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)The html file:
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
    <title>DemoApplet</title>
</head>
<body>
<BODY LINK="#0000ff" VLINK="#800080" BGCOLOR="#37a1a7">
      <h1>DemoApplet</h1>
      

<SCRIPT LANGUAGE="JavaScript"></SCRIPT>
<COMMENT><SCRIPT LANGUAGE="JavaScript1.1"></SCRIPT></COMMENT>
<SCRIPT LANGUAGE="JavaScript"></SCRIPT>
<APPLET CODE = com.mycomp.myapp.DemoApplet CODEBASE = "." ARCHIVE = "DemoApplet.jar,classes12.zip" WIDTH = 695 HEIGHT = 525></XMP>
<PARAM NAME = CODE VALUE = com.mycomp.myapp.DemoApplet >
<PARAM NAME = CODEBASE VALUE = "." >
<PARAM NAME = ARCHIVE VALUE = "DemoApplet.jar,classes12.zip" >
<PARAM NAME="type" VALUE="application/x-java-applet;jpi-version=1.3.1">
<PARAM NAME="scriptable" VALUE="false">
</APPLET>
</NOEMBED></EMBED></OBJECT>


</body>
</html>Thank you for your help!
Gruesse,
Torsten

seems like it couldn't find the image file... try to give it the absolute path to the file first to see if this is the root of the problem... and then try to find alternative ways to not give it the absolute path...

Problem with Appletviewer

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