My applet doesn't run in a browser.

I written the following code:
import javax.swing.*;
public class Logo extends JApplet
     JButton button ;
     Icon icon;
     JPanel panel;
     public void init()
          icon = new ImageIcon("smilogo.gif");
          button = new JButton(icon);
          panel = new JPanel();
          panel.add(button);
          getContentPane().add(panel);
I also have my html file with the code :
<HTML>
<HEAD></HEAD>
<BODY >
<CENTER>
<APPLET code = "Logo.class" width = "100" height = "100"></APPLET>
</CENTER>
</BODY>
</HTML>
when I run the html file with the appletviewer the image gets loaded like I
expect it to. But when I run the file in a browser (IE version 5)after converting
it using the HTMLConverter, the image doesn't load.
What could be the problem. The code was compiled with J2sdk1.4.0.

It's a JApplet, it needs the java plug in....
If you've already got the plugin installed you'll just need to change the tag you're using to load the applet... it'll either be an embed tag or an object tag.. (embed for Netscape, Object for IE)...

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Please help -- Why the applet doesn't run with jre1.4.1_01?

Hi,
I have an applet embedded in a remote-server page. It can be loading from the server and running in the local computer with Jre1.3.1. After I uninstalled jre1.3.1 and installed JRE1.4.1_01. My applet doesn't run. Here is the message from Java Consol:
java.lang.NullPointerException
at sun.plugin.cache.CachedFileLoader.writeHeaders(Unknown Source)
at sun.plugin.cache.CachedFileLoader.createCacheFiles(Unknown Source)
at sun.plugin.cache.CachedFileLoader.access$200(Unknown Source)
at sun.plugin.cache.CachedFileLoader$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.plugin.cache.Cache.privileged(Unknown Source)
at sun.plugin.cache.CachedFileLoader.download(Unknown Source)
at sun.plugin.cache.CachedFileLoader.load(Unknown Source)
at sun.plugin.cache.FileCache.get(Unknown Source)
at sun.plugin.net.protocol.http.HttpURLConnection.connectWithCache(Unknown Source)
at sun.plugin.net.protocol.http.HttpURLConnection.connect(Unknown Source)
at sun.plugin.net.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getHeaderField(HttpURLConnection.java:1197)
at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:247)
at sun.applet.AppletClassLoader.getBytes(AppletClassLoader.java:250)
at sun.applet.AppletClassLoader.access$100(AppletClassLoader.java:42)
at sun.applet.AppletClassLoader$1.run(AppletClassLoader.java:143)
at java.security.AccessController.doPrivileged(Native Method)
at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:140)
at sun.plugin.security.PluginClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:114)
at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:501)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:566)
at sun.plugin.AppletViewer.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:495)
at sun.applet.AppletPanel.run(AppletPanel.java:292)
at java.lang.Thread.run(Thread.java:536)
I copy the my html file which has this applet built-in to my local computer. The webpage can be openned and the applet running fine even with jre1.4.1. Why it didn't run with Jre1.4.1 and it did run with jre 1.3.1 when loading remotely? Could someone tell me what the above messages mean? Is this a bug from Jre1.4.1_01?
I have running server at 206.29.25.29. and select "read sensor". Jre1.4.1_01 will not let the applet run, but jre1.3.1 does.
Is there any body know about this issue?
Thanks,
Kunlun

In fact, I have run many tests and the only failures are when the plugin is 1.4.2 and the app server is on Unix:
Build      Deploy      Build JDK     PlugIn JDK     App Server JDK     Result
Win     Win     1.4.2_02     1.4.2          1.4.2          Success
Win     Win     1.4.2          1.4.2          1.4.2          Success
Win     Win     1.4.1_02     1.4.2          1.4.2          Success
Win     Win     1.4.2          1.4.0          1.4.2          Success
Win     Win     1.4.2          1.4.1          1.4.2          Success
Win     Win     1.4.2          1.4.2          1.4.2          Success
Unix     Win     1.4.2          1.4.2          1.4.2          Success
Unix     Win     1.4.2          1.4.2          1.4.1_02     Success
Unix     Win     1.4.2          1.4.2          1.4.0          Success
Unix     Unix     1.4.2          1.4.0          1.4.0          Success
Unix     Unix     1.4.2          1.4.1          1.4.0          Success
Unix     Unix     1.4.2          1.4.2          1.4.0          Failure
Win     Unix     1.4.2          1.4.0          1.4.0          Success
Win     Unix     1.4.2          1.4.1          1.4.0          Success
Win     Unix     1.4.2          1.4.2          1.4.0          Failure

Applet doesn't run on Apache

Now that I've copied my applet's class file onto my HTTP Apache server, the applet doesn't work.
The error message is: "the applet is notinited; loading of java applet failed",
My applet work if i run on usual way but not when I put it on Apache web server.
What is the solution of this problem?
Any help would be appreciated.
Thanks

So you're saying that you just do a file|open from your browser and open the HTML page and all is well, but when you moved the HTML page and the class file to somewhere under the docroot of your Apache installation you can hit the page but your browser doesn't load the applet, is that right?

Applet doesn't run with Tomcat - please help!

Hello!
I have a problem with running an applet in Eclipse IDE, using J2EE and a Dynamic Web Project and a Tomcat server.
The directory structure is:
ProjectName
- Java Resources->PackageName->AppletName.java
- built->classes->PackageName->AppletName.class
- WebContent->index.html
In my index.html page I put this code:
<applet code="PackageName.AppletName" width="500" height="200"></applet>
If I run this applet like a simple Java Applet, it runs.
But If I run this on server, my browser doesn't show me anything. I've try several posibilities, but it doesn't work. I should do some configurations on my Tomcat or I wrote something wrong on in my index.hml code, or my AppletName it isn't a simple java class?
Thank you for your time!
Adina

My index.html is in WebContent, so I've already put the AppletClass.class there.
I've tried with a jar and if I run this on server it doesn't work either. I don't know if there is any Tomcat->server.xml settings...
It's so frustrating...
Any ideas?
The error message is:
Java Plug-in 1.6.0_22
Using JRE version 1.6.0_22-b04 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\adina
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
load: class app not found.
java.lang.ClassNotFoundException: app
     at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(Unknown Source)
     at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed:http://localhost:8080/app.class
     at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
     at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
     at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     ... 9 more
Exception: java.lang.ClassNotFoundException: app
Edited by: 811815 on Nov 17, 2010 12:11 AM

Applet embedded in JSP doesn't run on browser with older than JRE-1.6

I have embeded an Applet in my JSP Page which used JDK1.6's getHardwareAddress() method to get user's physical address.
I have embeeded this into a JAR file and used it in my JSP where this applet run on onload() event of the form --> runs the applet --> and gets physical address of user machine and prints it in one of the text boxes on the form.
Now, the issue is that the applet doesn't run on browser that doesn't support JRE 1.6
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The last option is that I give a message on my web page that redirects user to Sun Java site and asks them to update their browsers.

Personally, I have no knowledge about Applet but have you checked this link?
[http://blogs.sun.com/thejavatutorials/entry/deployment_toolkit_101|http://blogs.sun.com/thejavatutorials/entry/deployment_toolkit_101]

Applet does not run in Browser

Iam using Windows XP and IE 6.0. Applets do not run in my browser. Hovering the cursor where the applet should be in the browser, I get a Class not found message. Setting the CLASSPATH variable did not help. Any suggestions?

You might find an answer in this new page
[url http://java.sun.com/j2se/1.4.2/docs/guide/deployment/deployment-guide/upgrade-guide/index.html]Java Upgrade Guide: Migrating From the Microsoft JVM to the Sun JRE

Applet doesn't work with JRE1.4.1_01

Hi,
I have an applet embedded in a remote-server page. It can be loading from the server and running in the local computer with Jre1.3.1. After I uninstalled jre1.3.1 and installed JRE1.4.1_01. My applet doesn't run. Here is the message from Java Consol:
java.lang.NullPointerException
     at sun.plugin.cache.CachedFileLoader.writeHeaders(Unknown Source)
     at sun.plugin.cache.CachedFileLoader.createCacheFiles(Unknown Source)
     at sun.plugin.cache.CachedFileLoader.access$200(Unknown Source)
     at sun.plugin.cache.CachedFileLoader$3.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at sun.plugin.cache.Cache.privileged(Unknown Source)
     at sun.plugin.cache.CachedFileLoader.download(Unknown Source)
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     at sun.plugin.cache.FileCache.get(Unknown Source)
     at sun.plugin.net.protocol.http.HttpURLConnection.connectWithCache(Unknown Source)
     at sun.plugin.net.protocol.http.HttpURLConnection.connect(Unknown Source)
     at sun.plugin.net.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
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     at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:247)
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     at sun.applet.AppletClassLoader.access$100(AppletClassLoader.java:42)
     at sun.applet.AppletClassLoader$1.run(AppletClassLoader.java:143)
     at java.security.AccessController.doPrivileged(Native Method)
     at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:140)
     at sun.plugin.security.PluginClassLoader.findClass(Unknown Source)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:299)
     at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:114)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:255)
     at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:501)
     at sun.applet.AppletPanel.createApplet(AppletPanel.java:566)
     at sun.plugin.AppletViewer.createApplet(Unknown Source)
     at sun.applet.AppletPanel.runLoader(AppletPanel.java:495)
     at sun.applet.AppletPanel.run(AppletPanel.java:292)
     at java.lang.Thread.run(Thread.java:536)
I copy the my html file which has this applet built-in to my local computer. The webpage can be openned and the applet running fine even with jre1.4.1. Why it didn't run with Jre1.4.1 and it did run with jre 1.3.1 when loading remotely? Could someone tell me what the above messages mean? Is this a bug from Jre1.4.1_01?
Thanks,
Kunlun

Hello
i am facing the same problem. when i run my java applet using localhost.. it does not work and shows the same exceptions
i download the JRE 1.4.1 by using following link
http://java.sun.com/products/plugin/1.4.1/demos/plugin/applets/SpreadSheet/example1.html
eventhen it is not working.
as you said you installed jre .1.3 and then 1.4 but i didn`t install 1.3 i directly installed 1.4. after installing 1.4 i downloaded the jre as you said. but still i am facing the same problem
and one thing else. i want to check it more then one system. i have to download it again and again can i download its setup once on my harddisk.
please send me the link
waiting for your reply
thanx in advance
Waris Mirza

NoClassDefFoundError:javax/swing/JApplet while running japplet in browser

hai to all,
i am trying to run a Japplet in broser,
it's getting NoClassDefFoundError:javax/swing/JApplet
on statusbar.
any plugin's are requitred to run swing applets in browser.?please give me details.
my JApplet is working in Applet viewer.
i am using Jdk1.3.1, and Applets are also running in my browser(both IE and NetScape).
thank you in advance
please mail me to [email protected]
by
sambareddy

I had the same problem when I was developing a swing applet to run on the web. What you have to do is convert your HTML file. It takes out the APPLET tags and replaces them with OBJECT and EMBED tags. This worked for me. I downloaded the converter from the Java site but I cannot recall exactly where. I think if you search for converter you should be able to find it. The newly converted HTML file will also prompt the user to download the correct plug-in if it is not already installed on their machine.
In the mean time, try using the HTML code below. You will have to change some of the lines but it should work for you. The OBJECT tag is used for IE and the EMBED tag is used for Netscape so don't forget to change both. One wierd thing you will see is that is if you run appletviewer on the converted HTML file, two windows will pop up and one of them will have errors and not load but one will. Don't worry about that, when you run it through the web server, everything works fine.
Good luck.
<HTML>
<HEAD>
<TITLE>Your title</TITLE>
</HEAD>
<BODY>
<CENTER>


<OBJECT classid="clsid:E19F9330-3110-11d4-991C-005004D3B3DB"
WIDTH = 550 HEIGHT = 300 codebase="http://java.sun.com/products/plugin/1.3.0_01/jinstall-130_01-win32.cab#Version=1,3,0,1">
<PARAM NAME = CODE VALUE = "the name of your class file" >
<PARAM NAME = CODEBASE VALUE = "location of the class or jar file">
<PARAM NAME = ARCHIVE VALUE = "name of your jar file, omit this entire line if you do not have a jar file" >
<PARAM NAME="type" VALUE="application/x-java-applet;jpi-version=1.3.0_01">
<PARAM NAME="scriptable" VALUE="false">
<COMMENT>
<EMBED WIDTH = 550 HEIGHT = 300 type="application/x-java-applet;jpi-version=1.3.0_01" CODE = "name of your class file" CODEBASE = "location of the class or jar file" ARCHIVE = "name of your jar file, omit this entire arg if you do not have a jar file" scriptable=false pluginspage="http://java.sun.com/products/plugin/1.3.0_01/plugin-install.html">
</EMBED>
</CENTER>
</COMMENT>
</OBJECT>

Applet doesn't takeup the new file until browser is started again

Hi Friends
I have made a applet which can record and also can play the .wav file.
I am using java sound api.
But when I run this applet and record the sound and then click a button to play it , it plays the older file. But after recording, the older file got replaced with the new file, then why it plays the older. It should now play the new file.
But after closing the IE browser and starting it again plays the newer recorded fle. Refreshing applet doesn't work.
I have checked this also on firefox browser, same is happening.
I have also tried to solve this problem using threading, but could not succeed. In threading I made AudioClip object null and reassigned the value in run method of the thread.
Please solve this problem.
Thanks

I've found that the render error is due to the applet being hidden/displayed via JavaScript. Now that I've played around with that, I find it a highly unrecommendable approach. Basically what's done is:
<div id="foo">
<applet id="myapplet" ...>
</applet>
</div>
<script>
document.getElementById('foo').style.visibility = 'hidden';
document.getElementById('foo').style.visibility = 'visible';
document.getElementById('myapplet').repaint();
</script>
The "repaint" call does call the repaint method in the applet, but the result is the sad picture that I've linked to.
Anyone know a robust way to repaint an applet from JavaScript?

Applet was not running in Browser

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     at java.lang.ClassLoader.defineClass(Unknown Source)
     at java.security.SecureClassLoader.defineClass(Unknown Source)
     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)
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     at sun.applet.AppletPanel.runLoader(Unknown Source)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
java.lang.NoClassDefFoundError: javax/media/ControllerListener
     at java.lang.ClassLoader.defineClass1(Native Method)
     at java.lang.ClassLoader.defineClass(Unknown Source)
     at java.security.SecureClassLoader.defineClass(Unknown Source)
     at sun.applet.AppletClassLoader.findClass(Unknown Source)
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     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)Any one help me,becaz past 4 days i have getting this error ,so i cann't move further any steps on my module ,so any one help me.
Advance Thankx & Regards
K.suresh

Hai Manu
I am using u r code,and change my applet tag like
<APPLET CODE="SimplePlayerApplet.class" WIDTH = "300" HEIGHT = "300" ></XMP>
<PARAM NAME ="FILE" VALUE = "artist - Track 01.mp3" >
</APPLET>Now i am getting error as:
APPLET tag missing CODE parameter.
java.lang.NullPointerException: name
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     at sun.applet.AppletPanel$6.run(Unknown Source)
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the applet program below there
import java.applet.Applet;
import java.awt.*;
import java.io.IOException;
import java.io.PrintStream;
import java.net.MalformedURLException;
import java.net.URL;
import javax.media.*;
public class SimplePlayerApplet extends Applet
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    public SimplePlayerApplet()
        player = null;
        visualComponent = null;
        controlComponent = null;
        progressBar = null;
        firstTime = true;
        CachingSize = 0L;
        panel = null;
        controlPanelHeight = 0;
        videoWidth = 0;
        videoHeight = 0;
        System.out.println("Hai");
public void init()
        setLayout(null);
        setBackground(Color.white);
        panel = new Panel();
        panel.setLayout(null);
        add(panel);
        panel.setBounds(0, 0, 320, 240);
        String s = null;
        MediaLocator medialocator = null;
        Object obj = null;
        System.out.println("IT's from Init");
        System.out.println("S value is:" + s);
        if ((s = getParameter("FILE")) == null)
             System.out.println("S value is:NULL");
            Fatal("Invalid media file parameter");
        try
            URL url = new URL(getDocumentBase(), s);
            System.out.println("URL Value is:" + url);
            s = url.toExternalForm();
        catch(MalformedURLException malformedurlexception) { }
        try
            if((medialocator = new MediaLocator("file:" + s)) == null)
                Fatal("Can't build URL for " + s);
                System.out.println("catch in malformed");
            try
                player = Manager.createPlayer(medialocator);
                System.out.println("it is from create player");
            catch(NoPlayerException noplayerexception)
                System.out.println(noplayerexception);
                Fatal("Could not create player for " + medialocator);
            player.addControllerListener(this);
            System.out.println("player add control");
        catch(MalformedURLException malformedurlexception1)
            Fatal("Invalid media file URL!");
        catch(IOException ioexception)
            Fatal("IO exception creating player for " + medialocator);
    public void start()
        if(player != null)
            player.start();
            System.out.println("This from start");
    public void stop()
        if(player != null)
               System.out.println("This from stop");
            player.stop();
            player.deallocate();
    public void destroy()
        player.close();
        System.out.println("This from Destory");
    public synchronized void controllerUpdate(ControllerEvent controllerevent)
          System.out.println("This from cotrollerUpdate");
        if(player == null)
            return;
        if(controllerevent instanceof RealizeCompleteEvent)
            if(progressBar != null)
                panel.remove(progressBar);
                progressBar = null;
            int i = 320;
            int j = 0;
            if(controlComponent == null && (controlComponent = player.getControlPanelComponent()) != null)
                controlPanelHeight = controlComponent.getPreferredSize().height;
                panel.add(controlComponent);
                j += controlPanelHeight;
            if(visualComponent == null && (visualComponent = player.getVisualComponent()) != null)
                panel.add(visualComponent);
                Dimension dimension = visualComponent.getPreferredSize();
                videoWidth = dimension.width;
                videoHeight = dimension.height;
                i = videoWidth;
                j += videoHeight;
                visualComponent.setBounds(0, 0, videoWidth, videoHeight);
            panel.setBounds(0, 0, i, j);
            if(controlComponent != null)
                controlComponent.setBounds(0, videoHeight, i, controlPanelHeight);
                controlComponent.invalidate();
        } else
        if(controllerevent instanceof CachingControlEvent)
            if(player.getState() > 200)
                return;
            CachingControlEvent cachingcontrolevent = (CachingControlEvent)controllerevent;
            CachingControl cachingcontrol = cachingcontrolevent.getCachingControl();
            if(progressBar == null && (progressBar = cachingcontrol.getControlComponent()) != null)
                panel.add(progressBar);
                panel.setSize(progressBar.getPreferredSize());
                validate();
        } else
        if(controllerevent instanceof EndOfMediaEvent)
            player.setMediaTime(new Time(0L));
            player.start();
        } else
        if(controllerevent instanceof ControllerErrorEvent)
            player = null;
            Fatal(((ControllerErrorEvent)controllerevent).getMessage());
        } else
        if(controllerevent instanceof ControllerClosedEvent)
            panel.removeAll();
    void Fatal(String s)
        System.err.println("FATAL ERROR: " + s);
        throw new Error(s);
    Player player;
    Component visualComponent;
    Component controlComponent;
    Component progressBar;
    boolean firstTime;
    long CachingSize;
    Panel panel;
    int controlPanelHeight;
    int videoWidth;
    int videoHeight;
}

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Forms 6i can run in the browser.
check out the first demo at
http://otn.oracle.com/sample_code/products/forms/content.html
to see how it looks.
You should upgrade to the newer versions of forms if you are planning to run on the web since there were many improvments in those versions for Web deployed forms.

Java 1.1.5 applets don't run in Netscape 6.1/6.2

I try to access a website with java-applets.
With Netscape 4.7x it's no problem. Java-Console says "Java 1.1.5". No java-plugin's installed.
With IE 5.x and 6 no problem.
Java Virtual Machine Build 3234 is installad
Systems NT4.0 and Win2000
With Netscape 6.1 and 6.2 those applets don't run (there is only a grey-area open where the applet should build up the content). I've seen there are couple of java-plugin's loaded in the Netscape 6 (NPOJI600.dll, NPJava130_01.dll, NPJava130_01a.dll, NPJava130_01b.dll and NPJava130_01c). As an idea I temporarly deleted them in the hope it would use JVM, as I suppose happens in Netscape 4.7x, were no java-plugin's are installed. But unfortunately it doesn't work either. It looks like Netscape 6.x can not refer to those java-components that the Netscape 4.7x uses.
Can I get somewhere the missing old plugin (1.1.5) or is there another way to make it work?
My search in java.sun.com told me that there seems to be no java 1.1.5 at all, so how can
Netscape talk about 1.1.5?
Thanks for any help....
Peter
PS) I have no experience in Java at all.

Hello,
If you look at the release notes of Netscape they mention that Netscape 6.x will not run Java codes unless there 1.3.0_01 and above
Sometime you wonder where they get these ideas, that means that if you have an old applet it won't run with the new browser. I guess they never heard about backward compatibility
Yanick

Applet won't run in Internet Explorer

I am having problems running applets that I create. They don't run in Internet Explorer. Other applets will run in the browser but it seems to use the Microsoft VM, not the JVM from Sun. The Mozilla Firefox browser will run all applets using the JVM from Sun.

to api00
If you cannot see an entry in IE Tools menu named Sun Java Console and open it , then do the following.
1.Open Windows' Control Panel and look for an entry "Java Plug-in".
- If it's not there, go here http://java.com/en/index.jsp and click the "Get It Now" button to install the Java Plug-in.
- If it's there, click it, and then the Browser tab. Make sure that "Internet Explorer" is checked, then close all instances of IE. Go to this page and try one of the applets: http://java.sun.com/j2se/1.4.2/docs/relnotes/demos.html
2. If that doesn't resolve the problem, remove ALL Sun Java stuff that you can find - check directories and the Registry - and do a clean install of Java.
to twinkietwin
Question 1: It appears that you typed the error text in your message #8, because there are capitalization and spelling problems that do not exactly match the errors that Java produces. Is this the case? If so please cut and paste the verbatim text of the errors from the window that appears when you click on the "More Details" button of the "Error - Java General Exception" box. (The EXACT and TOTAL error test is important.)
It appears that the applet is attempting to acquire the value of some variables from the HTML code that calls the applet, but for some reason it cannot find the HTML file named "example1.htm" that contains the variables. One possibility is that there is a file on your computer named either example1.htm or example1.html that is being found first. Check your machine for files with one of these names; if found, temporarily rename it to something else and try the Sun BarChart applet from the demo page again.

Signed, cached JNLP applet doesn't start when updating from 1.6 to 1.7

Hi, yesterdays forced upgrade from Java6 to Java7 uncovered a nasty surprise for us:
We're running a game client through JNLP embedded in the browser using signed all-permission jars. The certificate is definitely valid and hasn't timed out.
When upgrading from 1.6 to 1.7 the applet won't start because of a supossed permission violation for the cached jars. Web start thinks that the jars in the cache are not signed (although they are).
Deleting the applet cache through the control panel, or deploying a new version of the applet both solves the problem as then the cached version will be overwritten with a newly downloaded version, and everything works fine from then on until switching back to 1.6 again.
Are 1.6 vs. 1.7 cached, signed jars not compatible? Something to do with pre-validation? Wouldn't it be a good idea to completely invalidate the applet cache in the JRE installer? Is this a bug on the JRE side, or are we somehow not using JNLP the right way (we're running the game for 2 years now, and a couple of million players have played the game since then on JRE6, so I assume we're using JNLP basically the right way).
Also, early JRE7 preview versions didn't seem to have this problem, I remember testing JRE7 intensively a few months back without any problems, however I'm not sure whether the cache remained intact when installing the preview JRE7 runtime.
Here are the console traces, please excuse the German, hopefully it's still clear what happens.
Oops, unfortunately I can only send 30k characters per post. I'd be happy to send you more traces, and additional information. Thanks in advance :)
Here's a trace when going from 1.6 to 1.7 with the failed permission validation:
Java-Plug-in 10.5.1.255
JRE-Version verwenden 1.7.0_05-b05 Java HotSpot(TM) Client VM
Benutzer-Home-Verzeichnis = C:\Users\aweissflog
c: Konsolenfenster löschen
f: Objekte in Finalisierungs-Queue finalisieren
g: Garbage Collect
h: Diese Hilfemeldung anzeigen
l: Class Loader-Liste ausgeben
m: Speicherauslastung drucken
o: Logging auslösen
q: Konsole ausblenden
r: Policy-Konfiguration neu laden
s: System- und Deployment-Eigenschaften ausgeben
t: Threadliste ausgeben
v: Thread-Stack ausgeben
x: Class Loader-Cache leeren
0-5: Trace-Ebene auf <n> setzen
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.definition value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.
security: property package.definition new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws
security: property package.definition value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws
security: property package.definition new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy
security: property package.definition value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy
security: property package.definition new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.access value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.access new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy,com.sun.jnlp,org.mozilla.jss
security: property package.definition value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy,com.sun.jnlp
security: property package.definition new value sun.,com.sun.xml.internal.ws.,com.sun.xml.internal.bind.,com.sun.imageio.,com.sun.org.apache.xerces.internal.utils.,com.sun.org.apache.xalan.internal.utils.,com.sun.javaws,com.sun.deploy,com.sun.jnlp,org.mozilla.jss
network: Created version ID: 1.7.0.05
network: Created version ID: 1.7
network: Cacheeintrag nicht gefunden [URL: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp?__cv=7833172affa6ff4e182d8b1e7ac0ebe500, Version: null]
cache: Cannot get resource from cache: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp?__cv=7833172affa6ff4e182d8b1e7ac0ebe500
network: Cacheeintrag nicht gefunden [URL: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp?__cv=7833172affa6ff4e182d8b1e7ac0ebe500, Version: null]
network: Cacheeintrag nicht gefunden [URL: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp?__cv=7833172affa6ff4e182d8b1e7ac0ebe500, Version: null]
network: Verbindung von http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp?__cv=7833172affa6ff4e182d8b1e7ac0ebe500 mit Proxy=DIRECT wird hergestellt
network: Verbindung von http://xxxxxxxxxxx.xxxxxxxxxxx.com:80/ mit Proxy=DIRECT wird hergestellt
security: Blacklist-Entzugsprüfung ist aktiviert
cache: Trying to update in place C:\Users\aweissflog\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\26\7672fd9a-3ab71d78.idx
cache: Upgrade writing to disk for C:\Users\aweissflog\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\26\7672fd9a-3ab71d78
network: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp?__cv=7833172affa6ff4e182d8b1e7ac0ebe500 wird mit Cookie "bpLandingPage_fallback=http%253A%252F%252Fxxxxxxxxxxx.xxxxxxxxxxx.com%252F; __utma=1.1858223971.1337797861.1339681185.1339685623.36; __utmb=1.12.10.1339685623; __utmc=1; __utmz=1.1338833129.25.9.utmcsr=xxxxxxxxxxx.xxxxxxxxxxxonline.com|utmccn=(referral)|utmcmd=referral|utmcct=/; __bpid=4fbd2a85L7T6qCGWXj0Q8oiTc5yG7ztB; drasasid=f1a4ef896018075f51bbe2c300b356ca" verbunden
network: ResponseCode für http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp?__cv=7833172affa6ff4e182d8b1e7ac0ebe500: 200
network: Codierung für http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp?__cv=7833172affa6ff4e182d8b1e7ac0ebe500: null
network: Serverantwort: (length: 731, lastModified: Wed Jun 13 19:21:23 CEST 2012, downloadVersion: null, mimeType: application/x-java-jnlp-file)
network: Not caching resource due to response header: cache-control: no-store
network: Ressource wird heruntergeladen: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp?__cv=7833172affa6ff4e182d8b1e7ac0ebe500
     Content-Length: 731
     Content-Encoding: null
security: Prüfung der Liste vertrauenswürdiger Librarys ist aktiviert
network: URL http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp?__cv=7833172affa6ff4e182d8b1e7ac0ebe500 in Datei C:\Users\aweissflog\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\34\1f2e02e2-2f6a1505-temp geschrieben
network: Verbindung mit http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp?__cv=7833172affa6ff4e182d8b1e7ac0ebe500 trennen
security: Datei mit der Liste vertrauenswürdiger Librarys wurde nicht gefunden
network: Downloaded http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp?__cv=7833172affa6ff4e182d8b1e7ac0ebe500: C:\Users\aweissflog\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\34\1f2e02e2-2f6a1505
temp: new XMLParser with source:
temp: <?xml version="1.0" encoding="UTF-8" ?>
<jnlp spec="1.0+" href="/applet/win32.jnlp">
<information>
<title>xxxxxxxxxxxOnlineWin32</title>
<vendor>xxxxxxxxxxx Berlin GmbH</vendor>
</information>
<resources>
<j2se version="1.6+" href="http://java.sun.com/products/autodl/j2se" />
<jar href="/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00" main="true" />
</resources>
<resources os="Windows">
<nativelib href="/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00" />
</resources>
<applet-desc name="xxxxxxxxxxxOnlineWin32" main-class="N3.N3JavaPiggyBack" width="800" height="600" />
<security>
<all-permissions />
</security>
</jnlp>
temp:
returning ROOT as follows:
<jnlp spec="1.0+" href="/applet/win32.jnlp">
<information>
<title>xxxxxxxxxxxOnlineWin32</title>
<vendor>xxxxxxxxxxx Berlin GmbH</vendor>
</information>
<resources>
<j2se version="1.6+" href="http://java.sun.com/products/autodl/j2se"/>
<jar href="/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00" main="true"/>
</resources>
<resources os="Windows">
<nativelib href="/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00"/>
</resources>
<applet-desc name="xxxxxxxxxxxOnlineWin32" main-class="N3.N3JavaPiggyBack" width="800" height="600"/>
<security>
<all-permissions/>
</security>
</jnlp>
temp: returning LaunchDesc from XMLFormat.parse():
<jnlp spec="1.0+" codebase="http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/" href="http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp">
<information>
<title>xxxxxxxxxxxOnlineWin32</title>
<vendor>xxxxxxxxxxx Berlin GmbH</vendor>
<homepage href="null"/>
</information>
<security>
<all-permissions/>
</security>
<update check="timeout" policy="always"/>
<resources>
<java href="http://java.sun.com/products/autodl/j2se" version="1.6+"/>
<jar href="http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00" download="eager" main="true"/>
<nativelib href="http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00" download="eager" main="false"/>
</resources>
<applet-desc name="xxxxxxxxxxxOnlineWin32" main-class="N3.N3JavaPiggyBack" documentbase="http://xxxxxxxxxxx.xxxxxxxxxxx.com/game" width="800" height="600"/>
</jnlp>
network: Cacheeintrag gefunden [URL: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp, Version: null] prevalidated=true/0
cache: Resource http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp has expired.
network: Verbindung von http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp mit Proxy=DIRECT wird hergestellt
network: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp wird mit Cookie "bpLandingPage_fallback=http%253A%252F%252Fxxxxxxxxxxx.xxxxxxxxxxx.com%252F; __utma=1.1858223971.1337797861.1339681185.1339685623.36; __utmb=1.12.10.1339685623; __utmc=1; __utmz=1.1338833129.25.9.utmcsr=xxxxxxxxxxx.xxxxxxxxxxxonline.com|utmccn=(referral)|utmcmd=referral|utmcct=/; __bpid=4fbd2a85L7T6qCGWXj0Q8oiTc5yG7ztB; drasasid=f1a4ef896018075f51bbe2c300b356ca" verbunden
cache: Upgrade of entry done
cache: readIndexFile returning success
cache: Trying to update in place C:\Users\aweissflog\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\39\1ff11027-574532ab.idx
cache: Upgrade writing to disk for C:\Users\aweissflog\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\39\1ff11027-574532ab
security: Datei mit der Liste vertrauenswürdiger Librarys wurde nicht gefunden
network: ResponseCode für http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp: 304
network: Codierung für http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp: null
network: Verbindung mit http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp trennen
temp: new XMLParser with source:
temp: <?xml version="1.0" encoding="UTF-8" ?>
<jnlp spec="1.0+" href="/applet/win32.jnlp">
<information>
<title>xxxxxxxxxxxOnlineWin32</title>
<vendor>xxxxxxxxxxx Berlin GmbH</vendor>
</information>
<resources>
<j2se version="1.6+" href="http://java.sun.com/products/autodl/j2se" />
<jar href="/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00" main="true" />
</resources>
<resources os="Windows">
<nativelib href="/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00" />
</resources>
<applet-desc name="xxxxxxxxxxxOnlineWin32" main-class="N3.N3JavaPiggyBack" width="800" height="600" />
<security>
<all-permissions />
</security>
</jnlp>
temp:
returning ROOT as follows:
<jnlp spec="1.0+" href="/applet/win32.jnlp">
<information>
<title>xxxxxxxxxxxOnlineWin32</title>
<vendor>xxxxxxxxxxx Berlin GmbH</vendor>
</information>
<resources>
<j2se version="1.6+" href="http://java.sun.com/products/autodl/j2se"/>
<jar href="/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00" main="true"/>
</resources>
<resources os="Windows">
<nativelib href="/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00"/>
</resources>
<applet-desc name="xxxxxxxxxxxOnlineWin32" main-class="N3.N3JavaPiggyBack" width="800" height="600"/>
<security>
<all-permissions/>
</security>
</jnlp>
temp: returning LaunchDesc from XMLFormat.parse():
<jnlp spec="1.0+" codebase="http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/" href="http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp">
<information>
<title>xxxxxxxxxxxOnlineWin32</title>
<vendor>xxxxxxxxxxx Berlin GmbH</vendor>
<homepage href="null"/>
</information>
<security>
<all-permissions/>
</security>
<update check="timeout" policy="always"/>
<resources>
<java href="http://java.sun.com/products/autodl/j2se" version="1.6+"/>
<jar href="http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00" download="eager" main="true"/>
<nativelib href="http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00" download="eager" main="false"/>
</resources>
<applet-desc name="xxxxxxxxxxxOnlineWin32" main-class="N3.N3JavaPiggyBack" documentbase="http://xxxxxxxxxxx.xxxxxxxxxxx.com/game" width="800" height="600"/>
</jnlp>
cache: JNLPPreverifyClassLoader.initialize: FAILED: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00
basic: Plugin2ClassLoader.addURL2 called for http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00
basic: Plugin2ClassLoader.drainPendingURLs addURL called for http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00
basic: Plugin2ClassLoader.addURL2 called for http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00
basic: Plugin2ClassLoader.drainPendingURLs addURL called for http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00
network: LaunchDownload: concurrent downloads from LD: 4
network: Total size to download: -1
security: Security check for progress jars: allSigned=true
network: SyncFileAccess.openLock: handled OverlappingFileLockException, remainint TO : 10000
network: Cacheeintrag gefunden [URL: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00, Version: null] prevalidated=false/0
cache: Resource http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00 has expired.
network: Verbindung von http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00 mit Proxy=DIRECT wird hergestellt
network: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00 wird mit Cookie "bpLandingPage_fallback=http%253A%252F%252Fxxxxxxxxxxx.xxxxxxxxxxx.com%252F; __utma=1.1858223971.1337797861.1339681185.1339685623.36; __utmb=1.12.10.1339685623; __utmc=1; __utmz=1.1338833129.25.9.utmcsr=xxxxxxxxxxx.xxxxxxxxxxxonline.com|utmccn=(referral)|utmcmd=referral|utmcct=/; __bpid=4fbd2a85L7T6qCGWXj0Q8oiTc5yG7ztB; drasasid=f1a4ef896018075f51bbe2c300b356ca" verbunden
network: ResponseCode für http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00: 304
network: Codierung für http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00: null
network: Verbindung mit http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00 trennen
network: Downloaded http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00: C:\Users\aweissflog\AppData\LocalLow\Sun\Java\Deployment\cache\6.0\26\7672fd9a-3ab71d78
network: Download Progress: jarsDone: 1
network: Cacheeintrag nicht gefunden [URL: http://xxxxxxxxxxx-481.ah.bpcdn.net/applet/loading.gif?__cv=8948a154c2c16d3f2a836802397bee3a00, Version: null]
network: Verbindung von http://xxxxxxxxxxx-481.ah.bpcdn.net/applet/loading.gif?__cv=8948a154c2c16d3f2a836802397bee3a00 mit Proxy=DIRECT wird hergestellt
network: Verbindung von http://xxxxxxxxxxx-481.ah.bpcdn.net:80/ mit Proxy=DIRECT wird hergestellt
cache: Upgrade of entry done
cache: readIndexFile returning success
network: CleanupThread used 403203 us
network: Cacheeintrag gefunden [URL: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00, Version: null] prevalidated=false/0
cache: Resource http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00 has expired.
network: Verbindung von http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00 mit Proxy=DIRECT wird hergestellt
network: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00 wird mit Cookie "bpLandingPage_fallback=http%253A%252F%252Fxxxxxxxxxxx.xxxxxxxxxxx.com%252F; __utma=1.1858223971.1337797861.1339681185.1339685623.36; __utmb=1.12.10.1339685623; __utmc=1; __utmz=1.1338833129.25.9.utmcsr=xxxxxxxxxxx.xxxxxxxxxxxonline.com|utmccn=(referral)|utmcmd=referral|utmcct=/; __bpid=4fbd2a85L7T6qCGWXj0Q8oiTc5yG7ztB; drasasid=f1a4ef896018075f51bbe2c300b356ca" verbunden
network: ResponseCode für http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00: 304
network: Codierung für http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00: null
network: Verbindung mit http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00 trennen
network: Download Progress: jarsDone: 2
network: Created version ID: 1.6+
network: Created version ID: 1.7.0.05
network: Created version ID: 1.7.0.05
network: Created version ID: 1.7
basic: LaunchDesc location: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/win32.jnlp
network: Created version ID: 1.0+
network: Created version ID: 7.0
basic: Ausnahme: Nicht signierte Anwendung fordert uneingeschränkten Zugriff auf das System an
Nicht signierte Ressource: http://xxxxxxxxxxx.xxxxxxxxxxx.com/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00.
ExitException[ 3]JNLPException[category: Sicherheitsfehler : Exception: null : LaunchDesc:
<jnlp spec="1.0+" href="/applet/win32.jnlp">
<information>
    <title>xxxxxxxxxxxOnlineWin32</title>
    <vendor>xxxxxxxxxxx Berlin GmbH</vendor>
</information>
<resources>
    <j2se version="1.6+" href="http://java.sun.com/products/autodl/j2se"/>
    <jar href="/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00" main="true"/>
</resources>
<resources os="Windows">
    <nativelib href="/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00"/>
</resources>
<applet-desc name="xxxxxxxxxxxOnlineWin32" main-class="N3.N3JavaPiggyBack" width="800" height="600"/>
<security>
    <all-permissions/>
</security>
</jnlp> ]
     at sun.plugin2.applet.JNLP2Manager.prepareLaunchFile(Unknown Source)
     at sun.plugin2.applet.JNLP2Manager.loadJarFiles(Unknown Source)
     at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Ignored exception: ExitException[ 3]JNLPException[category: Sicherheitsfehler : Exception: null : LaunchDesc:
<jnlp spec="1.0+" href="/applet/win32.jnlp">
<information>
    <title>xxxxxxxxxxxOnlineWin32</title>
    <vendor>xxxxxxxxxxx Berlin GmbH</vendor>
</information>
<resources>
    <j2se version="1.6+" href="http://java.sun.com/products/autodl/j2se"/>
    <jar href="/applet/applet32.jar?__cv=d9e6e3109f4e716598e7faca54137e7e00" main="true"/>
</resources>
<resources os="Windows">
    <nativelib href="/applet/native32.jar?__cv=63a18d5fb09ca89e097ff6485249fdcf00"/>
</resources>
<applet-desc name="xxxxxxxxxxxOnlineWin32" main-class="N3.N3JavaPiggyBack" width="800" height="600"/>
<security>
    <all-permissions/>
</security>
</jnlp> ]
security: Zugriff auf Schlüssel und Zertifikat im Mozilla-Benutzerprofil: null
security: Speicher für abgelehnte Sessionzertifikate zurücksetzen
basic: Dialog type is not candidate for embedding

Wouldn't it be a good idea to completely invalidate the applet cache in the JRE installer?Yes, I guess it should be an option for user of the app on first start after upgrade, not for the JRE installer. There are many large applications that users would want to avoid re-download.
From the log, there is some hidden exception during first launch. The best way to proceed is to file a bug, including some guest/debugging access to the game.

My applet doesn't run in a browser.

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