Java Applet Loading Failed.

[paulmrn]

Hello.

I am having a problem with Java. I think it is a common problem, so can anyone help me?

When I try to enter a chat room, a blank square with a little red "X" on the corner appears, an in the bottom of the window it says "Java Applet Loading Failed." I followed the steps in Java.com, but it said that I needed to adjust my proxy settings or something similar. Does anyone know how to solve this problem?
I already tried with Netscape, and Firefox, but it is the same problem....

Thanks,

paulmrn

[emurphy1]

Hi paulmrn,

It sounds like your problem could be one of two things:
1) You browser doesn't have a Java plugin correctly installed
2) The chat room site has a problem with the way they've coded their Java applet.

So a couple of questions for you...
1) What operating system are you using? Windows, Mac OS X, Linux?
2) Can you go to other web sites that use client side Java? A good test would be to go to this site, http://freewarejava.com/applets/index.shtml, and try one of the Java applets, like the "Any Month Calendar". Does it load correctly?

The freeware java website is for Java developers but you can access/try all the java applets on the site. If the applets at freeware java work in your browser then your problem is the with the chat room code in which case you need to contact the chat room about the problem. If the applets at freeware java do not work then you don't have Java correctly installed with your browser.

If the problem is Java not being correctly installed let me know your browser (including browser version) and O/S and I'll post instructions on installing the Java plugin.

[paulmrn]

Hello, Ed. The applets at freeware java do not work.
What's the problem then?
I have Internet Explorer 6.0, with Windows XP SP2.
Thanks,

Paul

[jharriso]

Try updating your Java runtime.
http://www.java.com/en/download/windows_xpi.jsp

[dparm]

Hello, Ed. The applets at freeware java do not work.
What's the problem then?
I have Internet Explorer 6.0, with Windows XP SP2.
Thanks,

Paul

You're more than likely using the default Microsoft Virtual Machine, which is terrible. Download the newest version of Sun Java VM and use that instead. More compatible and stable for sure.

[paulmrn]

Hello.
I first tried to update the Java runtime. But the page just does not work as you click the yellow "download" button.

Second, I tried to download the newest version of Sun Java VM, but the download program says that I already have it installed on my computer. Is there a way to "activate" it?
Thanks.

Paul

[dparm]

Launch Internet Explorer and go to the Tools menu. Select Internet Options. Select the Advanced tab. About halfway down you should see an entry that says Java (Sun) with the little coffee cup icon. Make sure it is enabled.

[paulmrn]

It is enabled. But the little red x continues to appear.
Next step would be:

Thanks,
Paul

[emurphy1]

Hi Paul,

Check out the following page, http://www.java.com/en/download/help/redximage.xml . It describes your problem well, it has step by step instructions on how to correct it and includes screen shots too.

Let us know if this fixes it.

[paulmrn]

Hello there.

I checked out that page. It certainly describes my problem, but it asks me to:

Start the "Java Plug-in Control Panel" by following these instructions.

Click the Start menu
Select Settings
Select Control Panel
Double click the "Java Plug-in" icon
Click the "Proxies" Tab

However, the "Java plug-in" icon does not exist in my Control Panel. I just found the "Java" icon, but it does not say anything about Plug-Ins or a "proxies" tab.
What can we do?

Thanks,
Paul

[emurphy1]

Paul,

Go back to the java page and keep reading, it says...
"If the applet still does not load, and you see the same connection error, try to configure the "Java Plug-in Control Panel" "Proxies" Tab using your web browser's proxy settings.
The web browser proxy settings are set as either manual or automatic. Please choose from the instructions below to configure your proxy settings for the JRE."

The page goes on to explain how to configure your proxy settings through your browser. Most likely you will want to follow the manual instructions, as I doubt you have a network administrator who supplied you with a automatic proxy configuration script.

[paulmrn]

Aren't the proxy settings determined by the university connection? Just to make sure...

Paul

[Unregistered]

I have the exact same problem, and I have followed all the tutorials I can find on Java.com and Sun.com and Google. There is nothing wrong with my proxy setup.

One thing though: It seems like I cannot completely remove the old version of Java 1.4. I have tried, but didn't succeed. So I just installed Java 1.5 from java.com. Still I get a red x wherever I try to download a java applet.

Can there be "leftovers" from the old version in my registry causing these problems? Any advices would be strongly appreciated. :)

Best regards,
Harald
Norway

[emurphy1]

Aren't the proxy settings determined by the university connection? Just to make sure...

No, there are no proxy settings established on personal computers by the UA Network. My understanding of the problem is that IE may be misconfigured so that it's proxy settings are preventing Java applets from loading properly.

[emurphy1]

OK, to really figure out what is going on we need some information from the Java Console...time to look at some code.

If you are running Internet Exploer, go to the menu bar and choose Tools->Sun Java Console. If you don't see this option, you do not have Sun Java installed - go to java.sun.com and get the latest version of Java, then make sure to activate it as previously described.

If you do have the option for Sun Java Console, but it doesn't come up, you need to uninstall/reinstall Internet Explorer. Go to Control Panel->Add/Remove Programs->Add/Remove Windows Components, and uncheck Internet Explorer, and click next a few times. Then restart your computer, and repeat, only this time put the check back in.

If you have the option for Sun Java Console, and it does come up, leave it open, and go to the site you're having problems with. If you are still having problems on the site, some information should be displayed in the Console window. Post that information, and I will look at it and tell you what might be going wrong.

[paulmrn]

Ok. This is what comes out when the red x appears:

Java Plug-in 1.5.0_04
Using JRE version 1.5.0_04 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\Owner
----------------------------------------------------
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
p: reload proxy configuration
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 CustApp.class not found.
java.lang.ClassNotFoundException: CustApp.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
Exception in thread "Thread-36" java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Un known Source)
at sun.plugin.AppletViewer.showAppletException(Unknow n Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Un known Source)
at sun.plugin.AppletViewer.showAppletStatus(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception in thread "thread applet-CustApp.class" java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Un known Source)
at sun.plugin.AppletViewer.showAppletException(Unknow n Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

[Guest]

Here is the info I see on my java console: I will post it in two replies since it is so long! sorry @ that!

Java Plug-in 1.5.0_05
Using JRE version 1.5.0_05 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\bhat
network: Loading user-defined proxy configuration ...
network: Done.
network: Loading proxy configuration from Internet Explorer ...
network: Done.
network: Loading direct proxy configuration ...
network: Done.
network: Proxy Configuration: No proxy

basic: Cache is enabled
basic: Location: C:\Documents and Settings\bhat\Application Data\Sun\Java\Deployment\cache\javapi\v1.0
basic: Maximum size: unlimited
basic: Compression level: 0

----------------------------------------------------
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
p: reload proxy configuration
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>
----------------------------------------------------

basic: Registered modality listener
liveconnect: Invoking JS method: document
liveconnect: Invoking JS method: URL
basic: Referencing classloader: sun.plugin.ClassLoaderInfo@1abc7b9, refcount=1
basic: Registered modality listener
liveconnect: Invoking JS method: document
liveconnect: Invoking JS method: URL
basic: Referencing classloader: sun.plugin.ClassLoaderInfo@1a73d3c, refcount=1
basic: Added progress listener: sun.plugin.util.GrayBoxPainter@1b10d42
basic: Loading applet ...
basic: Initializing applet ...
basic: Starting applet ...
basic: Added progress listener: sun.plugin.util.GrayBoxPainter@53ba3d
basic: Loading applet ...
basic: Initializing applet ...
basic: Starting applet ...
network: Connecting http://presence.games.yahoo.com/yog/y/cnt4.jar with proxy=DIRECT
java.net.UnknownHostException: presence.games.yahoo.com
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNew HttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainC onnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connec t(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInp utStream(Unknown Source)
at sun.plugin.net.protocol.http.HttpUtils.followRedir ects(Unknown Source)
at sun.plugin.cache.CachedJarLoader.isUpToDate(Unknow n Source)
at sun.plugin.cache.CachedJarLoader.loadFromCache(Unk nown Source)
at sun.plugin.cache.CachedJarLoader.load(Unknown Source)
at sun.plugin.cache.JarCache.get(Unknown Source)
at sun.plugin.net.protocol.jar.CachedJarURLConnection .connect(Unknown Source)
at sun.plugin.net.protocol.jar.CachedJarURLConnection .getJarFile(Unknown Source)
at sun.misc.URLClassPath$JarLoader.getJarFile(Unknown Source)
at sun.misc.URLClassPath$JarLoader.<init>(Unknown Source)
at sun.misc.URLClassPath$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.misc.URLClassPath.getLoader(Unknown Source)
at sun.misc.URLClassPath.getLoader(Unknown Source)
at sun.misc.URLClassPath.getResource(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(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)
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)
basic: WARNING: error reading http://presence.games.yahoo.com/yog/y/cnt4.jar from cache.
basic: httpCompression = true
basic: Downloading http://presence.games.yahoo.com/yog/y/cnt4.jar to cache
basic: encoding = null for http://presence.games.yahoo.com/yog/y/cnt4.jar
network: Connecting http://presence.games.yahoo.com/yog/y/cnt/0.class with proxy=DIRECT
network: Connecting http://presence.games.yahoo.com/yog/y/cnt/0.class with proxy=DIRECT
load: class y.cnt.0 not found.
java.lang.ClassNotFoundException: y.cnt.0
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

[guest]

basic: Exception: java.lang.ClassNotFoundException: y.cnt.0
Exception in thread "Thread-7" java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Un known Source)
at sun.plugin.AppletViewer.showAppletException(Unknow n Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Un known Source)
at sun.plugin.AppletViewer.showAppletStatus(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
basic: Exception: java.lang.NullPointerException
Exception in thread "thread applet-y.cnt.0" java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Un known Source)
at sun.plugin.AppletViewer.showAppletException(Unknow n Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
network: Connecting http://mtab.games.yahoo.com/wbgameshsc/gamehouse/twist.zip with proxy=DIRECT
java.net.UnknownHostException: mtab.games.yahoo.com
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNew HttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainC onnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connec t(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInp utStream(Unknown Source)
at sun.plugin.net.protocol.http.HttpUtils.followRedir ects(Unknown Source)
at sun.plugin.cache.CachedJarLoader.isUpToDate(Unknow n Source)
at sun.plugin.cache.CachedJarLoader.loadFromCache(Unk nown Source)
at sun.plugin.cache.CachedJarLoader.load(Unknown Source)
at sun.plugin.cache.JarCache.get(Unknown Source)
at sun.plugin.net.protocol.jar.CachedJarURLConnection .connect(Unknown Source)
at sun.plugin.net.protocol.jar.CachedJarURLConnection .getJarFile(Unknown Source)
at sun.misc.URLClassPath$JarLoader.getJarFile(Unknown Source)
at sun.misc.URLClassPath$JarLoader.<init>(Unknown Source)
at sun.misc.URLClassPath$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.misc.URLClassPath.getLoader(Unknown Source)
at sun.misc.URLClassPath.getLoader(Unknown Source)
at sun.misc.URLClassPath.getResource(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(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)
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)
basic: WARNING: error reading http://mtab.games.yahoo.com/wbgameshsc/gamehouse/twist.zip from cache.
basic: httpCompression = true
basic: Downloading http://mtab.games.yahoo.com/wbgameshsc/gamehouse/twist.zip to cache
basic: encoding = null for http://mtab.games.yahoo.com/wbgameshsc/gamehouse/twist.zip
network: Connecting http://mtab.games.yahoo.com/wbgameshsc/gamehouse/gamehouse/SuperApplet.class with proxy=DIRECT
network: Connecting http://mtab.games.yahoo.com/wbgameshsc/gamehouse/gamehouse/SuperApplet/class.class with proxy=DIRECT
load: class gamehouse.SuperApplet.class not found.
java.lang.ClassNotFoundException: gamehouse.SuperApplet.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
basic: Exception: java.lang.ClassNotFoundException: gamehouse.SuperApplet.class
Exception in thread "Thread-5" java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Un known Source)
at sun.plugin.AppletViewer.showAppletException(Unknow n Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Un known Source)
at sun.plugin.AppletViewer.showAppletStatus(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
basic: Exception: java.lang.NullPointerException
Exception in thread "thread applet-gamehouse.SuperApplet.class" java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Un known Source)
at sun.plugin.AppletViewer.showAppletException(Unknow n Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

[Unregistered]

I've done everything said so far and the Java applet still fails... Here's what came up in the Java console.

Java Plug-in 1.5.0_05
Using JRE version 1.5.0_05 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\Owner


----------------------------------------------------
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
p: reload proxy configuration
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 y.ch.10 not found.
java.lang.ClassNotFoundException: y.ch.10
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
load: class y.ch.10 not found.
java.lang.ClassNotFoundException: y.ch.10
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
load: class y.ch.10 not found.
java.lang.ClassNotFoundException: y.ch.10
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
TestVM 3.1 kc
Copyright (c) 2005 Sun Microsystems, Inc.
All Rights Reserved.
TestVM 3.1 kc
Copyright (c) 2005 Sun Microsystems, Inc.
All Rights Reserved.
TestVM 3.1 kc
Copyright (c) 2005 Sun Microsystems, Inc.
All Rights Reserved.
Exception in thread "Thread-76" java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThread)
at java.security.AccessControlContext.checkPermission (Unknown Source)
at java.security.AccessController.checkPermission(Unk nown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at sun.applet.AppletSecurity.checkAccess(Unknown Source)
at java.lang.Thread.checkAccess(Unknown Source)
at java.lang.Thread.setPriority(Unknown Source)
at testvm.run(testvm.java:268)
at java.lang.Thread.run(Unknown Source)
Exception in thread "Loading System Properties" java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThread)
at java.security.AccessControlContext.checkPermission (Unknown Source)
at java.security.AccessController.checkPermission(Unk nown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at sun.applet.AppletSecurity.checkAccess(Unknown Source)
at java.lang.Thread.checkAccess(Unknown Source)
at java.lang.Thread.setPriority(Unknown Source)
at testvm.run(testvm.java:268)
at java.lang.Thread.run(Unknown Source)
TestVM 3.1 kc
Copyright (c) 2005 Sun Microsystems, Inc.
All Rights Reserved.
TestVM 3.1 kc
Copyright (c) 2005 Sun Microsystems, Inc.
All Rights Reserved.
Exception in thread "Loading System Properties" java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThread)
at java.security.AccessControlContext.checkPermission (Unknown Source)
at java.security.AccessController.checkPermission(Unk nown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at sun.applet.AppletSecurity.checkAccess(Unknown Source)
at java.lang.Thread.checkAccess(Unknown Source)
at java.lang.Thread.setPriority(Unknown Source)
at testvm.run(testvm.java:268)
at java.lang.Thread.run(Unknown Source)
Exception in thread "Thread-89" java.security.AccessControlException: access denied (java.lang.RuntimePermission modifyThread)
at java.security.AccessControlContext.checkPermission (Unknown Source)
at java.security.AccessController.checkPermission(Unk nown Source)
at java.lang.SecurityManager.checkPermission(Unknown Source)
at sun.applet.AppletSecurity.checkAccess(Unknown Source)
at java.lang.Thread.checkAccess(Unknown Source)
at java.lang.Thread.setPriority(Unknown Source)
at testvm.run(testvm.java:268)
at java.lang.Thread.run(Unknown Source)
AWT blocker activation interrupted:
java.lang.InterruptedException
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Unknown Source)
at sun.awt.AWTAutoShutdown.activateBlockerThread(Unkn own Source)
at sun.awt.AWTAutoShutdown.notifyThreadBusy(Unknown Source)
at java.awt.EventQueue.initDispatchThread(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
load: class y.ch.10 not found.
java.lang.ClassNotFoundException: y.ch.10
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
load: class y.ch.10 not found.
java.lang.ClassNotFoundException: y.ch.10
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

Thoughts?

[abudhu]

User:

Can you please edit your 3 post, and use this tag:

[*code] *Past your code here* [*/code]


Without the * on either code one.

I mean on the last code on: [*/code] remove the * before the / and it will work properly

:)

If you did it right it should look like this:


All you java code here


It just makes it easier to read and compiles it into one post. It makes my eyes hurt when I have to scroll so much :-D

In anycase, in a bid to actually help you I'll be looking into the matter when I arrive on campus today.

It'll make it easier to see.

[guest]

In reality, we were 2 guests here posting the console code!

I am following Amit's suggestion of using the tag(though did not understand what he told @ "the * at the end code one", so please forgive me if I do it the wrong way: Here it goes,

Java Plug-in 1.5.0_05
Using JRE version 1.5.0_05 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\bhat
network: Loading user-defined proxy configuration ...
network: Done.
network: Loading proxy configuration from Internet Explorer ...
network: Done.
network: Loading direct proxy configuration ...
network: Done.
network: Proxy Configuration: No proxy

basic: Cache is enabled
----------------------------------------------------
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
p: reload proxy configuration
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>
----------------------------------------------------

basic: Registered modality listener
liveconnect: Invoking JS method: document
liveconnect: Invoking JS method: URL
basic: Referencing classloader: sun.plugin.ClassLoaderInfo@9971ad, refcount=1
basic: Registered modality listener
liveconnect: Invoking JS method: document
liveconnect: Invoking JS method: URL
basic: Referencing classloader: sun.plugin.ClassLoaderInfo@a401c2, refcount=1
basic: Added progress listener: sun.plugin.util.GrayBoxPainter@1f7d134
basic: Loading applet ...
basic: Initializing applet ...
basic: Starting applet ...
basic: Added progress listener: sun.plugin.util.GrayBoxPainter@67ac19
basic: Loading applet ...
basic: Initializing applet ...
basic: Starting applet ...
network: Connecting http://presence.games.yahoo.com/yog/y/cnt4.jar with proxy=DIRECT
network: Connecting http://mtab.games.yahoo.com/wbgameshsc/gamehouse/twist.zip with proxy=DIRECT
java.net.UnknownHostException: presence.games.yahoo.com
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNew HttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainC onnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connec t(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInp utStream(Unknown Source)
at sun.plugin.net.protocol.http.HttpUtils.followRedir ects(Unknown Source)
at sun.plugin.cache.CachedJarLoader.isUpToDate(Unknow n Source)
at sun.plugin.cache.CachedJarLoader.loadFromCache(Unk nown Source)
at sun.plugin.cache.CachedJarLoader.load(Unknown Source)
at sun.plugin.cache.JarCache.get(Unknown Source)
at sun.plugin.net.protocol.jar.CachedJarURLConnection .connect(Unknown Source)
at sun.plugin.net.protocol.jar.CachedJarURLConnection .getJarFile(Unknown Source)
at sun.misc.URLClassPath$JarLoader.getJarFile(Unknown Source)
at sun.misc.URLClassPath$JarLoader.<init>(Unknown Source)
at sun.misc.URLClassPath$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.misc.URLClassPath.getLoader(Unknown Source)
at sun.misc.URLClassPath.getLoader(Unknown Source)
at sun.misc.URLClassPath.getResource(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(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)
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)
basic: WARNING: error reading http://presence.games.yahoo.com/yog/y/cnt4.jar from cache.
java.net.UnknownHostException: mtab.games.yahoo.com
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
basic: httpCompression = true
at sun.net.www.http.HttpClient.openServer(Unknown Source)
basic: Downloading http://presence.games.yahoo.com/yog/y/cnt4.jar to cache
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNew HttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainC onnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connec t(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInp utStream(Unknown Source)
at sun.plugin.net.protocol.http.HttpUtils.followRedir ects(Unknown Source)
at sun.plugin.cache.CachedJarLoader.isUpToDate(Unknow n Source)
at sun.plugin.cache.CachedJarLoader.loadFromCache(Unk nown Source)
at sun.plugin.cache.CachedJarLoader.load(Unknown Source)
at sun.plugin.cache.JarCache.get(Unknown Source)
at sun.plugin.net.protocol.jar.CachedJarURLConnection .connect(Unknown Source)
at sun.plugin.net.protocol.jar.CachedJarURLConnection .getJarFile(Unknown Source)
at sun.misc.URLClassPath$JarLoader.getJarFile(Unknown Source)
at sun.misc.URLClassPath$JarLoader.<init>(Unknown Source)
at sun.misc.URLClassPath$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.misc.URLClassPath.getLoader(Unknown Source)
at sun.misc.URLClassPath.getLoader(Unknown Source)
at sun.misc.URLClassPath.getResource(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(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)
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)
basic: WARNING: error reading http://mtab.games.yahoo.com/wbgameshsc/gamehouse/twist.zip from cache.
basic: httpCompression = true
basic: Downloading http://mtab.games.yahoo.com/wbgameshsc/gamehouse/twist.zip to cache
basic: encoding = null for http://presence.games.yahoo.com/yog/y/cnt4.jar
basic: encoding = null for http://mtab.games.yahoo.com/wbgameshsc/gamehouse/twist.zip
network: Connecting http://presence.games.yahoo.com/yog/y/cnt/0.class with proxy=DIRECT
network: Connecting http://mtab.games.yahoo.com/wbgameshsc/gamehouse/gamehouse/SuperApplet.class with proxy=DIRECT
network: Connecting http://presence.games.yahoo.com/yog/y/cnt/0.class with proxy=DIRECT
load: class y.cnt.0 not found.
java.lang.ClassNotFoundException: y.cnt.0
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
basic: Exception: java.lang.ClassNotFoundException: y.cnt.0
network: Connecting http://mtab.games.yahoo.com/wbgameshsc/gamehouse/gamehouse/SuperApplet/class.class with proxy=DIRECT
load: class gamehouse.SuperApplet.class not found.
java.lang.ClassNotFoundException: gamehouse.SuperApplet.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
basic: Exception: java.lang.ClassNotFoundException: gamehouse.SuperApplet.class

[emurphy1]

This problem is not easily solved, as you've probably already guessed. :rolleyes: A quick search on Google and Sun's Java forums shows many people experiencing the same problem and no clear cut answer, sorry.

Here is the root cause of the problem as found at the bottom of your stack trace...
Caused by: java.io.IOException: open HTTP connection failed.

Unfortunately, there is no simple solution. Since this happens on mutiple browsers it most likely is a JRE or browser-plugin problem. Hang in there, see if any of the ideas below help.

Some more ideas:

Are you using a firewall or an Internet Protection Suite that might be blocking Java applets/class files?

Can you copy the link http://presence.games.yahoo.com/yog/y/cnt/0.class
to the Firefox address bar and open it? If you are prompted to save the
class file, that's OK: it means that the browser can open it (but the
Java plugin cannot). If Firefox cannot access it either, then a firewall
or something else is blocking it. [FWIW, I can access the link, so the
class file does exist.]

Are you using a proxy to access the internet? If you are (if you have
selected a proxy in Tools -> Options -> General -> Connection Settings),
then make sure that the Java plugin uses the same: [assuming Windows &
Java 1.5] Start -> Settings -> Control Panel -> Java -> General ->
Network settings -> Use browser settings.

Can your browser run an applet from your local file system (i.e. a
"file://"-URL instead of a "http://"-URL in the addressbar)?
If you have installed the JDK you can find a couple of applets in the
demo subdirectory of the JDK, e.g.
C:\Program Files\Java\jdk1.5.0_04\demo\applets\Clock

Try clearing your browser cache (Tools -> Options -> Privacy -> Cache
-> Clear)

Try clearing the Java plugin cache (Start -> Settings -> Control
Panel -> Java -> General -> Temporary Internet Files -> Delete Files)

Make sure that the Java plugin supports the <APPLET> tag: Start ->
Settings -> Control Panel -> Java -> Advanced -> <APPLET> tag support

[Unregistered]

Some more ideas:
[list=1]
Can you copy the link http://presence.games.yahoo.com/yog/y/cnt/0.class
to the Firefox address bar and open it? If you are prompted to save the
class file, that's OK: it means that the browser can open it (but the
Java plugin cannot). If Firefox cannot access it either, then a firewall
or something else is blocking it. [FWIW, I can access the link, so the
class file does exist.]

Yes I can open the yahoo URL in firefox.. but strangly though when viewed in JBuilder, the file 0.class is empty.

I also followed the other instruction Ed told.
I guess I will have to hang-in until some solution comes up! But Damn this one is so irritating!
Please post any solution somebody finds on this thread!

[paulmrn]

I guess I'll have to do the same.

Thanks.

[Unregistered]

Upon launching Calendar in OWA (Outlook Web Access - The Email stuff works fine), the big center calendar of today loads, but the date navigator (two monthly calendars on right panel) generate the Java Applet load failure (Class.calendar) and give the RED X of death. The pulldown for "daily" vs "weekly" doesn't work either. So all you can do is see today's calendar page.
I have tried all that every site and forum suggests: updated JRE to ver.5, uninstalled and re-installed IE 6 (I have XP PRO Media Edition). I have tested other Java applets from site you recommended, they all work. By the way the OWA version being used on the server is Ver 5.5 SP4.
I have checked Internet options setup (all things are checked). There is no proxy to use. AND, this problem is not universal to all users. It happens on ALL my computers, but not to other users. (Same OS, IE6 for all, different ISP and different stuff on computers). I have Office 2002 on this computer, many/most have Office 2003. The OWA is a government (.mil) site so maybe some security issues, but not likely for JUST ONE applet (all the others work on the OWA site!).
My Java Console looks the same as all the other posts, but here it is anyway:
HELP HELP HELP HELP. My VPN isn't working either (access/password problems so I have no way to get to work calendarl except the darn Blackberry).
HELP HELP HELP HELP OHHELP.

CONSOLE BELOW:
Java Plug-in 1.5.0_05
Using JRE version 1.5.0_05 Java HotSpot(TM) Client VM
User home directory = C:\Documents and Settings\Franceen George


----------------------------------------------------
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
p: reload proxy configuration
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 Calendar.class not found.
java.lang.ClassNotFoundException: Calendar.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
Exception in thread "Thread-4" java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Un known Source)
at sun.plugin.AppletViewer.showAppletException(Unknow n Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Un known Source)
at sun.plugin.AppletViewer.showAppletStatus(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception in thread "thread applet-Calendar.class" java.lang.NullPointerException
at sun.plugin.util.GrayBoxPainter.showLoadingError(Un known Source)
at sun.plugin.AppletViewer.showAppletException(Unknow n Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

[emurphy1]

I have tested other Java applets from site you recommended, they all work.
It sounds like the problem is between your computer and the Outlook Web Site. I suggest you contact the administrators of the Outlook Web Site for assistance.

If you are a student at the University of Arizona you can call 626-TECH and make an appointment with one of our technial leads to do some one-on-one troubleshooting of your computer problem.