Windows Java 6 Update 22 fails to load signed applet from 1.5 build

Folks,
I built and signed my applet using Java build 1.5.0_21-b01 with a Versign cert. We're finding during testing that the applet simply does not load, but the Java Control Panel lists our cert as expected. We haven't seen this issue with earlier releases of the Java plugin (e.g. before 6u22). Any ideas how to solve?
Thanks

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ClassFormatError when attempting to load an applet from within a JSP

Greetings everyone.
I have a problem that i seem unable to solve.
I've created a web application. I'm using Java 1.4.2_05 and Tomcat. Right now i'm trying to load an applet from a JSP and i'm getting an error that, try as i might, i can't understand why it happens.
Here is some detailed info:
The applet's code:
package smpb.myapp.controllers;
import java.applet.Applet;
import java.awt.Graphics;
public class GUIApplet extends Applet
     public void init()
     public void stop()
     public void paint(Graphics g)
              g.drawString("Hey hey hey",20,20);
           g.drawString("Hellooo World",20,40);
The JSP's code:
<%@ page language="java"
               import="java.util.*"
               session="true" %>
<%
     String name = (String) request.getSession().getAttribute("userName");
%>
<html>
     <head>
          <title>Login</title>
     </head>
     <body>
          <h1><p align="center">Application</p></h1>
          <br>
          Welcome <%= name %>! Thank you for logging in!
          <br><br><br>
          <applet align="middle" code="smpb.myapp.controllers.GUIApplet.class" codebase="./" archive="MyApp_applets.jar">
               Your browser does not support this feature.
          </applet>
          <br><br>
          <a href='<%=request.getContextPath() + "/LogOut"%>'>Log Out</a><br>
     </body>
</html>-------------------------------------------
When i reach this JSP the applet fails to load and i get the following error message at the java console:
Loading applet ...
Initializing applet ...
Starting applet ...
Connecting http://127.0.0.1/MyApp/MyApp_applets.jar with no proxy
Connecting http://127.0.0.1/MyApp/MyApp_applets.jar with cookie "JSESSIONID=A8EECE5E39458739C760D8907762C507"
Last modified time and/or expiration value is not available. Jar file will not be cached.
Connecting http://127.0.0.1/MyApp/MyApp_applets.jar with no proxy
Connecting http://127.0.0.1/MyApp/MyApp_applets.jar with cookie "JSESSIONID=A8EECE5E39458739C760D8907762C507"
Connecting http://127.0.0.1/MyApp/smpb/myapp/controllers/GUIApplet.class with no proxy
Connecting http://127.0.0.1/MyApp/smpb/myapp/controllers/GUIApplet.class with cookie "JSESSIONID=A8EECE5E39458739C760D8907762C507"
Last modified time and/or expiration value is not available. Jar file will not be cached.
Connecting http://127.0.0.1/MyApp/smpb/myapp/controllers/GUIApplet.class with no proxy
Connecting http://127.0.0.1/MyApp/smpb/myapp/controllers/GUIApplet.class with cookie "JSESSIONID=A8EECE5E39458739C760D8907762C507"
java.lang.ClassFormatError: smpb/myapp/controllers/GUIApplet (Bad magic number)
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:539)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
     at sun.applet.AppletClassLoader.findClass(AppletClassLoader.java:157)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
     at sun.applet.AppletClassLoader.loadClass(AppletClassLoader.java:123)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
     at sun.applet.AppletClassLoader.loadCode(AppletClassLoader.java:561)
     at sun.applet.AppletPanel.createApplet(AppletPanel.java:617)
     at sun.plugin.AppletViewer.createApplet(AppletViewer.java:1856)
     at sun.applet.AppletPanel.runLoader(AppletPanel.java:546)
     at sun.applet.AppletPanel.run(AppletPanel.java:298)
     at java.lang.Thread.run(Thread.java:534)
Exception: java.lang.ClassFormatError: smpb/myapp/controllers/GUIApplet (Bad magic number)-------------------------------------------
The JSP is in the root directory of the web application's path right along with the jar file. The jar file itself has the following structure:
Archive: HelpDesk_applets.jar
Length     Date   Time    Name
        0 05-17-06 12:17   META-INF/
      106 05-17-06 12:17   META-INF/MANIFEST.MF
        0 05-10-06 17:14   smpb/
        0 05-10-06 17:14   smpb/myapp/
        0 05-12-06 16:50   smpb/myapp/controllers/
      794 05-12-06 17:15   smpb/myapp/controllers/GUIApplet.class
      900                   6 filesNow, i've tried loading the very same jar file that i use in the JSP through a static HTML which is virtually identical to the JSP i presented and everything works just fine. I've checked and rechecked to see if all the permissions to access the jar file were accurate, i checked to see if Tomcat had it's MIME settings correctly configured so that there was no chance that the files were being corrupted during the load (as that is a usual cause for the problem, or so i've gathered) but to no avail. I've searched the web, including these forums, and found similar problems but no conclusive solution. I can't seem to figure out, at all, what could possibly be wrong. Does anyone have any ideas? I've tried to be as thorough as i could from the start, so, any help would be deeply appreciated.

Hi mshah101,
This can happen if the applet is compiled using an higher version of java and the browser is pointing to an older version (even if minor version number is higher)

Update failed something is preventing firefox from updating securely how do I fix this ?

Please can someone help me I have been getting from time to time an update box pop up that reads "Update Failed Something is preventing Firefox from updating securely. Please make sure that you have the latest version of Firefox from http://www.firefox.com", however my Firefox is up to date (I think). I have uninstalled then reinstalled but I'm still getting this error. I have been having this issue on and off for a couple of months and although I have posted before about this I'm still without a solution. I have looked into my programs folder as it tells me to in the help information to look for the active-update.xml, updates.xml and the updates folder and it's contents so I can delete them but I can't seem to find them. I'm definately not a computer whizz so any help anyone wants to offer needs to be in step by step form. Thanks

See also [[/questions/919214]]
Do a clean reinstall and delete the Firefox program folder before (re)installing a fresh copy of the current Firefox release.
Download a fresh Firefox copy and save the file to the desktop.
*Firefox 20.0.x: http://www.mozilla.org/en-US/firefox/all.html
Uninstall your current Firefox version, if possible, to cleanup the Windows registry and settings in security software.
*Do NOT remove personal data when you uninstall your current Firefox version, because all profile folders will be removed and you will lose all personal data like bookmarks and passwords from profiles of other Firefox versions.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
*(32 bit Windows) C:\Program Files\Mozilla Firefox\
*(64 bit Windows) C:\Program Files (x86)\Mozilla Firefox\
*It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
*http://kb.mozillazine.org/Uninstalling_Firefox
Your bookmarks and other personal data are stored in the Firefox profile folder and won't be affected by an uninstall and (re)install, but make sure that "remove personal data" is NOT selected when you uninstall Firefox.
If you keep having problems then also create a new profile.
*http://kb.mozillazine.org/Profile_folder_-_Firefox
*http://kb.mozillazine.org/Profile_backup
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall

Problem with accessing Signed Applet from javascript method

Hi,
I am facing the following problem while accessing Signed Applet from javascript method.
java.security.AccessControlException: access denied (java.io.FilePermission c:/temp.txt read)
     at java.security.AccessControlContext.checkPermission(Unknown Source)
     at java.security.AccessController.checkPermission(Unknown Source)
     at FileTest.testPerm(FileTest.java:19)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at sun.plugin.javascript.invoke.JSInvoke.invoke(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at sun.plugin.javascript.JSClassLoader.invoke(Unknown Source)
     at sun.plugin.com.MethodDispatcher.invoke(Unknown Source)
     at sun.plugin.com.DispatchImpl.invokeImpl(Unknown Source)
     at sun.plugin.com.DispatchImpl$1.run(Unknown Source)
     at java.security.AccessController.doPrivileged(Native Method)
     at sun.plugin.com.DispatchImpl.invoke(Unknown Source)
I am using jdk1.5 for my development...
Can anyone help to resolve this security issue. Urgent...
Thanks in advance.

Hey thanks. I wasn't able to get it to work with that sample but I did find this very similar code that does allow javascript to call JFileChooser in an applets public method.
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction()
public Object run(){
//do your special code here
return null; //return whatever you want
It seems a bit tempermental in that if you don't select a file quickly, it will hang the browser....no perfect solution but I'm going in the right direction.
Thanks,
Scott

Can i call signed applet from jsf page in sun studio creator

Hello javites,
I want to know whether i can call signed applet from jsf page in sun studio creator. If possible, how do i go about it.
Thanks.

This tutorial may help:
http://developers.sun.com/prodtech/javatools/jscreator/reference/techart/2/applet.html?feed=DSC

HT4623 The iOS 7.0.6 update failed, my iPhone 5S disappeared from iTunes and now is displaying the picture: iTunes and a USB plug. Turning it Off and On didn't fix it. iTunes doesn't see it. Any suggestions?

The iOS 7.0.6 update failed, my iPhone 5S disappeared from iTunes and now is displaying a picture iTunes logo and a USB plug and black backgraound. Turning it Off and On didn't fix it. iTunes doesn't see it. Any suggestions?

Thanks, Lawrence.
I've tried http://support.apple.com/kb/HT1808 and other suggestions first, which turned out unrelated.
I've finally fixed the issue by plugging the cable in the USB 3 ports in the back of PC instead of the ports in the front, the iTunes saw the phohe and the recovery started automatically.
In the hindsight, I realized that the either the required prerequisite iTunes 11.1.5.5 update installed a USB driver incompatible with my PC's front side USB ports that I always used for my iPhone syncing prior or it was always
incompatible, but worked in all modes except the recovery.
Cheers,
Michael

How could I to load my applet from local

hI all,
How can i to load my applet from local file system.
Thanks

Put it anywhere you want. Put the associated HTML file in the same directory as your .class file and double click on the HTML file. Your browser should open up and display your Applet.

IE Specific problem loading signed applet java 1.5

Hello,
I am having troubles loading our signed applet under IE 6.0 (only tested version atm).
Firefox loads it without trouble, though the <object> tag that launches each is different.
Every time I try to launch the applet, it prompts me to install the java runtime environment. I currently have 3 different versions of the java 1.5 runtime on my machine and the Java Control Panel is set to default to the most recent (1.5.04).
Regardless of whether I choose 'Install' or 'Don't Install' a rectangle with a red X appears in the top left corner of the window. Nothing happens if I choose 'Install'. I did install through that prompt once. I don't know why it keeps asking me.
I have enabled the console before loading the applet, and there is absolutely NO output there. The applet is not loaded at all. I am not prompted to accept or deny our certificate. I have also tried disabling as much as I could security-wise in IE.
Any help would be greatly appreciated. I've been searching the net for 2 days and haven't come across anything that fixes this problem. Almost everything I have found has indicated at least some console output at least.
Here is the javascript code I am using. createVCRTarget is called on a button click. I guess I should also mention that this was working some months ago, but it is possible that it was before I installed Service Pack 2. All of my Windows security updates are installed. Also, you should be able to see in here that I also tried using an applet tag. That didn't work either. Nothing loaded when I tried that, the little Active-X icon was in the top left instead of a Red X. That was my first attempt with an applet tag ever though, so it may not have been correct. I think it is obsolete anyways?
function createVCRTarget() {
     createWindow('valid.package.path.VCRLauncher', 'vcr.jar, targetsdk.jar, xercesImpl.jar, cidero-common.jar', 'VCRTarget', '300', '110');
     return true;
function createWindow(classid, jars, title, width, height) {
var agent = navigator.userAgent.toLowerCase();
var newWin = window.open("", title, "width="+width+",height="+height+",scrollbar=no,status=no,statusbar=no,resizable=no");
newWin.document.write("<html>\n");
newWin.document.write(" <head><title>" + title + "</title>\n");
newWin.document.write(" <style type=\"text/css\">body { margin: 0; padding: 0; }</style>\n");
newWin.document.write(" </head>\n<body>\n");
     if (agent.indexOf("msie")==-1) { // not IE
    newWin.document.write('<object classid="java:'+classid+'"');
    newWin.document.write('          codetype="application/java"');
    newWin.document.write('          archive="'+jars+'"');
    newWin.document.write('          width="'+width+'" height="'+height+'">');
    newWin.document.write('</object>');
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//          newWin.document.write('<applet archive="'+jars+'" code="'+classid+'" height="'+height+'" width="'+width+'">');
          newWin.document.write('<object classid="clsid:CAFEEFAC-0014-0001-0005-ABCDEFFEDCBA"');
//          newWin.document.write('               codebase="http://java.sun.com/products/plugin/autodl/jinstall-1_5_0-windows-i586.cab#Version=5,0,0,0"');
          newWin.document.write('               codebase="http://java.sun.com/update/1.5.0/jinstall-1_5_0_02-windows-i586.cab#Version=5,0,0,0"')
          newWin.document.write('               width="'+width+'" height="'+height+'">');
          newWin.document.write('<param name="code" value="'+classid+'" />');
          newWin.document.write('<param name="archive" value="'+jars+'" />');
          newWin.document.write('<param name="type" value="application/x-java-applet;jpi-version=1.5.0" />');
          newWin.document.write('</object>');
newWin.document.write("</body>\n</html>\n");
}Thanks in advance,
-Tim

I see now that you are forsing IE to use jre version 1.4.1_5 but you provide a codebase
pointing to the 1.5 jre.
It doesn't matter though what you use evan if you use the htmlconverter if the jdk
you'll get wrong values for codebase and/or IE is not able to download the cab
file.
The only way I was able to install the jre through clsid and codebase browsing a
page with IE was to download the cab file with mozilla (if you know the correct url to it).
And then host the cab file yourselve.

Java security dialog freezes Java & browser when loading signed applet

Hi,
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1)Applet A loads
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http://www.java-tips.org/java-se-tips/java.applet/have-an-applet-launch-another-applet.html
Class appletClass = Class.forName(appletToLoad);
Applet realApplet = (Applet)appletClass.newInstance();
realApplet.setStub(this);
setLayout( new GridLayout(1,0));
add(realApplet);
realApplet.init();
realApplet.start();
4) Applet B loads
5) Applet B security dialog shows up, but it is gray. From this point on, nothing resonds. The java console is gray, all browser windows are frozen, the dialog is gray and frozen. I can move it around, but it leaves trails.
The only hint that I have is that the last security dialog is a modal dialog, but it seems like it's pushed twice, possibly causing a deadlock?
This is what I see in the trace file:
security: Certificate has been verified with Root CA certificates successfully
security: No timestamping info available
basic: Modality pushed
basic: Modality pushed
Usually a "Modality pushed" is followed by a "Modality Popped".
Does anyone have any idea how I can go about resolving this problem? This is not an issue if I manually import the certificate for Applet B into the java cert. store.
Thanks.

Were you able to figure out the problem? I have the same issue and it is killing me. Please share with me anything you found.

[bug ?] Windows 7 update fails on Flash Player 32/64-bit plugin

Hi!
Windows 7 (x32) update fails on
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     Adobe Flash Player 64-bit Plugin 11.0.1.152
with error codes 6BA and 80070661.
Hangs in my update center since November 2011.
Feel free to ask for any details.

Update4: Most likely the problem is on our side, see my post below.
Thanks, Jeromie, it has worked. [see update below]
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Also, I don't know how Flash updates work, but it would certainly be good, if I could update from my Windows Update server.
Consider my company: most users (about 250) have weekly internet-traffic limit of about 50 MB (no problems with bandwidth, only to force people not to visit entertainment sites).
Hence, most users will ignore Flash Player updates, just to save few precious MBs.
Update:
Errors have returned few hours later after reinstall [1].
I've noticed that update process passes "download" and "creating recovery point" phases,
and error occurs on about 30% of installation of 32-bit plugin update.
If you'll point me at some system log, I'll be happy to provide more info.
Update3:
Maybe the problem is in our Windows Update server ?
[1] I've unistalled both "Flash Player 11 Plugin" and "Flash Player 11 ActiveX",
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Windows 7 updates fail behind SBS 2003 and ISA 2004

Windows 7 update is failing with 'Code 80072EFD'. I am using SBS 2003 with ISA 2004. We just recently updated the client machine from Windows XP. WSUS is completely disabled from SBS 2003 and all updates are download directly from windows
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How can I fix updates for the Windows 7 machine?

Hi,
Based on your description, please refer to following article and check if can help you.
Windows Update
error 80072efd
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Best regards,
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Windows 8 Updates fail

KB 2769165 and 2770917 fail to install on Windows 8 Pro

This issue can be fixed temporarily by turning off the checkbox for 'Check for Microsoft Updates'. Those would be for things other than windows. Strangely, when you select this to not check (by default on install it is checked) it disappears
from the screen for later reversal. This has fixed all the pc's I have assessed that were having trouble updating windows. This is a clue to the real issue, which Microsoft should be addressing, as it disables all other updates from Microsoft which
I would imagine have to do with Office, Hardware and others... This is definitely a HUGE issue since no Windows Defender updates can be performed while the windows update feature is broken, exposing the user to malware that they would not necessarily
have been exposed to. In addition, it forces the end users to look for solutions since Microsoft, in each and every blog entry, forum entry or email shoots recommendations at the users who may or may not be technically savvy to perform. Many of
the recommendations could have harmful results to the end users pc if they were not to apply them correctly, and in many cases, the recommendations are written in such a manner that the sequence and application of the recommendation are unclear and left to
the end user to assume. Not good. You better get this fixed and soon. I will not be recommending anyone migrate to Windows 8 new or upgraded until this issue is addressed, fully and without question. This is a reproduce-able issue that
can and has been reproduced by many, many end users to date and for the life of me I cannot understand why Microsoft has not reproduced the issue and created a surefire solution that works all the time, in every case.
Dodge

Since yesterday's (Nov 6th) update, firefox fails to load any sites from web (still displays html files from PC). I tried restore, didn't help.

I've installed the recommended update yesterday (Nov 6th) but didn't restart Firefox. Since restarting the computer this morning, Firefox has failed to open any website from the web. The connection is ok, explorer loads the sites normally, Firefox opens tabs as normal, it's just that the content of the pages doesn't show up, and after a while we get messages like "connection timed out". HTML files that I have stored on my own hard drive display normally in Firefox.
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Remove all rules for Firefox and the plugin-container from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox and the plugin-container process and the updater process.
See:
*https://support.mozilla.org/kb/Server+not+found
*https://support.mozilla.org/kb/Firewalls

Windows 7 updates fail to install

i've running the microsoft fix updates tool more than 30 times , the computer takes more than a hour on configuring updates and at the end the updates fail to install , my computer has the last antivirus and mcafee security tools , I create the restore cd s for my laptop the computer ask for 3 dvd's . and when I run the discs are empty im frustrating with microsoft and who created the tool for make recovery cds my laptop is a vgn-ns325j and the mensajes what give me the windows tool :service registration is missing or corruptwindows update error 0x80070490problems installing recent updates

Hi,
You can also run Windows Troubleshooter, disable your antivirus and firewall temporarily, perform
clean boot for a test.
http://windows.microsoft.com/en-US/windows7/Open-the-Windows-Update-troubleshooter
Best Regards,
Niki
Please remember to click "Mark as Answer" on the post that helps you, and to click "Unmark as Answer" if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Calling1.4.1 signed applet from Javascript causes keyboard/focus problems

Pretty sure there's a JRE bug here, but I'm posting to forums before I open one in case I'm missing something obvious :-)
This issue may be specific to IE, I haven't tested elsewhere yet. Our web application is centered around a signed applet that is initialized with XML data via Javascript. We first noticed the problem when our users started upgrading from the 1.3.x plug-in to the 1.4.x plug-in. The major symptom was that shortcut keys stopped working. I debugged the problem off and on for about a month before I boiled it down to a very simple program that demonstrates the issue (included below). Basically, the program has a function that adds a JButton to a JPanel and registers a keyboard listener (using the new DefaultKeyboardFocusManager class) that prints a message to the console. This function is called by the applet's init() method, as well as by a public method that can be called from Javascript (called callMeFromJavascript()). I also included a very simple HTML file that provides a button that calls the callMeFromJavascript() method. You can test this out yourself: To recreate, compile the class below, JAR it up, sign the JAR, and put in the same dir with the HTML file. Load the HTML file in IE 5.0 or greater, and bring the console up in a window right next to it. Now click the button that says init--you should see the small box appear inside the button that indicates it has the focus. Now press some keys on your keyboard. You should see "KEY PRESSED!!!" appearing in the console. This is proper behavior. Now click the Init Applet from Javascript button. It has removed the button called init, and added one called "javascript". Press this button. Notice there is no focus occurring. Now press your keyboard. No keyboard events are registered.
Where is gets interesting is that if you go back and make this an unsigned applet, and try it again, everything works fine. This bug only occurs if the applet is signed.
Furthermore, if you try it in 1.3, signed or unsigned, it also works. So this is almost certainly a 1.4 bug.
Anyone disagree? Better yet, anyone have a workaround? I've tried everything I could think of, including launching a thread from the init() method that sets up the components, and then just waits for the data to be set by Javascript. But it seems that ANY communication between the method called by Javascript and the code originating in init() corrupts something and we don't get keyboard events. This bug is killing my users who are very reliant on their shortcut keys for productivity, and we have a somewhat unique user interface that relies on Javascript for initialization. Any help or suggestions are appreciated.
================================================================
Java Applet (Put it in a signed JAR called mainapplet.jar)
================================================================
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class MainApplet extends JApplet implements KeyEventDispatcher
    JPanel test;
    public void init()
        System.out.println("init called");
        setUp("init");
    public void callMeFromJavascript()
        System.out.println("callMeFromJavascript called");
        setUp("javascript");
    private void setUp(String label)
        getContentPane().removeAll();
        test = new JPanel();
        getContentPane().add( test );
        JButton button = new JButton(label);
        test.add( button );
        test.updateUI();
        DefaultKeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher(this);
    public boolean dispatchKeyEvent(KeyEvent e)
        System.out.println("== KEY PRESSED!!! ==");
        return false;
}================================================================
HTML
================================================================
<form>
<APPLET code="MainApplet" archive="mainapplet.jar" align="baseline" id="blah"
     width="200" height="400">
     No Java 2 SDK, Standard Edition v 1.4.1 support for APPLET!!
</APPLET>
<p>
<input type="button" onClick="document.blah.callMeFromJavascript();" value="Init Applet via Javascript">
</form>

I tried adding the requestFocus() line you suggested... Same behavior.
A good thought, but as I mention in my description, the applet has no trouble gaining the focus initially (when init() is called). From what I have seen, it is only when the call stack has been touched by Javascript that I see problems. This is strange though: Your post gave me the idea of popping the whole panel into a JFrame... I tried it, and the keyboard/focus problem went away! It seems to happen only when the component hierarchy is descended from the JApplet's content pane. So that adds yet another variable: JRE 1.4 + Signed + Javascript + components descended from JApplet content pane.
And yes, signed or unsigned DOES seem to make a difference. Don't ask me to explain why, but I have run this little applet through quite a few single variable tests (change one variable and see what happens). The same JAR that can't receive keyboard events when signed, works just fine unsigned. Trust me, I'm just as baffled as you are.

Windows Java 6 Update 22 fails to load signed applet from 1.5 build

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