Network speed check Java applet is "security" blocked

IHA has been asking for some time to optimize speed.
Finally had just done a reboot & figured it was a good time to try.
When you run the Network Diagnostic tool from http://my.verizon.com/services/speedtest/defaultndt.aspx,
the Java applet JWEB100 comes back as blocked (MSIE, Firefox & Chrome) A Windows popup (no program attribution) says:
Application blocked by Security Settings
Name: JWeb100
Location http://nyfiosspeed3.west.verzon.net [even though I am i NY and it asks for state]
Your security settings have blocked an untrusted application from running.
Norton does not really seem to be the culprit, but I could be wrong. The Java console security setting (midway between medium and high) seems to indicate a trusted certificate is required, but why would this applet not have a certicate?
Any ideas?
Success comes in cans: Failure comes in can'ts.
Education is what you get from reading the small print; experience is what you get from not reading it.

Note works if you authorize the various addresses. I am not sure if this working as it should or is a work around.
For Mine I have authorized
http://my.verizon.com
http://atlfiosspeed1.west.verizon.net
http://atlfiosspeed2.west.verizon.net
http://atlfiosspeed3.west.verizon.net
http://tpafiosspeed1.west.verizon.net
http://tpafiosspeed2.west.verizon.net
http://tpafiosspeed3.west.verizon.net
The entries besides my.verizon.com depend on where you test against.

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Speeding up Java Applets

Hi,
We are developing a system that extensively uses Java Applets. But it's taking a lot of time to load up the applets.
Is there any way of speeding up the execution of Java Applets? Is Sun working on improvements to JRE that will result in better speed performance?
Thanks.

Hi mins0306!
Look to this guys: http://www.creamtec.com/
Could be a valuable solution!
Regards.

How to activate Java Applets?

Hi,
I got some Java Applets that i try to run (again). Since Javas own security and firefox itself forbids to run Java without being activated by the user i thought i would be asked whether to activate java on my own site (local on the PC) or not. Although java is activated inside in the plugins-option menu and the correct installation of java is confirmed by java.com (test after the installation) my Java applets dont show up, not even a message saying "Applets are being blocked" or so.
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Kind regards,
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"application": {
"name": "Firefox",
"version": "37.0.2",
"buildID": "20150415140819",
"userAgent": "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:37.0) Gecko/20100101 Firefox/37.0",
"updateChannel": "release",
"supportURL": "https://support.mozilla.org/1/firefox/37.0.2/WINNT/de/",
"numTotalWindows": 1,
"numRemoteWindows": 0
"crashes": {
"submitted": [],
"pending": 0
"modifiedPreferences": {
"accessibility.typeaheadfind.flashBar": 0,
"browser.cache.disk.smart_size.first_run": false,
"browser.cache.disk.smart_size.enabled": false,
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"browser.places.smartBookmarksVersion": 7,
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"browser.startup.homepage_override.mstone": "37.0.2",
"browser.startup.homepage": "file:///C:/Users/Klinge/Desktop/Sign%C3%BC%20I+II%20-%20Neu/sueb1/html/index.html",
"browser.startup.homepage_override.buildID": "20150415140819",
"dom.ipc.plugins.sandbox.default": true,
"dom.mozApps.used": true,
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"gfx.direct3d.last_used_feature_level_idx": 0,
"media.gmp-gmpopenh264.lastUpdate": 1430384919,
"media.gmp-gmpopenh264.version": "1.3",
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"network.cookie.prefsMigrated": true,
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"plugin.state.java": 2,
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"storage.vacuum.last.places.sqlite": 1430385666,
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"adapterDescription2": "",
"adapterVendorID2": "",
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"adapterSubsysID2": "",
"adapterRAM2": "",
"adapterDrivers2": "",
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"isGPU2Active": false,
"direct2DEnabled": true,
"directWriteEnabled": true,
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"NSPR": {
"minVersion": "4.10.8",
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"NSSUTIL": {
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use Robot Class
java.awt.Robot since jdk1.3

Re: [Fwd: Java Applet IIOP Call-In with Release 3C--How dowe speed up d

Hi Michael,
We have done exactly what you describe and have avoided the slow applet
download times. Although it can be a bit tricky, it is possible to use
the ORB bundled inside the Netscape 4.0 browser (Visibroker for Java by
Visigenic). Most of the code should follow Netscape's examples (on
http://developer.netscape.com)--just remember to initialize the ORB by
passing a reference to the current applet in orb_init() (so that you
invoke something like orb_init(this) [assuming you are extending
java.applet.Applet]). Pulling up the Java console within your web
browser should help debug quite a bit (a lot of debug messages will get
printed there the ORB is having problems).
Netscape has just implemented the applet caching schemes you describe,
so it probably shouldn't matter too much if you use another vendor's
ORB (we've done this with Iona's OrbixWeb). If you use ZIP files, they
have to be uncompressed, and I don't think that the browser will cache
them between browser sessions. Netscape 4.0 does seem to handle
compressed JAR files just fine and it does indeed cache them between
browser sessions. I'd go with the JAR format anyway since the ZIP
bundling was just a workaround until Sun got their act together in the
1.1 JDK.
By the way, you also might want to take advantage of the code-signing
and capabilities APIs of Netscape if you are going to invoke methods on
objects not resident on your web server. Otherwise, you will probably
run into the (in)famous browser applet security restrictions and you may
have other problems doing things like callbacks from Forte, etc.
If you want more detail on how it works, let me know and I can post some
examples.
Oh, one last thing: we are a consulting firm specializing in these kinds
of things :)
Bill
Subject: Java Applet IIOP Call-In with Release 3C--How do we speed up download time.
Date: Wed, 2 Jul 1997 09:10:31 -0500
From: Michael Nelson <[email protected]>
To: "'[email protected]'" <[email protected]>
We have successfully implemented a simple Java Applet that calls into
Forte Services via IIOP. However, the duration of the download time
for
Applet and its required class files is UNACCEPTABLE in a typical
INTERNET environment where 28.8K modems and multiple hops around the
net
are not uncommon. We dialed into our network at 28.8K (but no
hopping),
and found that download times varied from 1.5 - 2.0 minutes. This is
unacceptable, even by internet standards. We have been using the
Visigenic Visibroker product as the ORB.
After doing some investigation, we've come up with several ideas to
speed up download time:
1. Figure out how to use the Visigenic components (CORBA/IIOP class
files) that come bundled with the latest version of the Netscape
Navigator browser, so that they don't have to be downloaded
2. Figure out how to use ZIP files. Here's what I've read: "Since
the
introduction of Netscape Navigator 3.0, you can specify an
uncompressed
.zip file as an addition to the code base of your application. By
specifying a ZIP file, the browser will load your applet's classes
from
a specified ZIP file before it searches the code base. This ZIP can
improve applet download time by reducing the number of HTTP
connections
required to fetch applet code. As an added benefit, Netscape caches
the
single ZIP file so that it will not reload your applet unless the date
of the ZIP file has changed."
3. Figure out how to use JAR files. Here's what I've read: "JAR
stands for Java archive. It's a file format based on the popular ZIP
file format and is used for aggregating many files into one. Although
JAR can be used as a general archiving tool, the primary motivation
for
its development was so that Java applets and their requisite
components
can be downloaded to a browser in a single HTTP transaction, rather
than
opening a new connection for each piece. This greatly improves the
speed with which an applet can be loaded onto a web page and begin
functioning. The JAR format also supports compression, which reduces
the
size of the file and improves download time still further."
Unfortunately, we've been unable to get any of these approaches to
work.
Has any one used these or other approaches to speed up applet
download
time? Or, does anyone know of consulting firms that specialize in
this
sort of thing?
Thanks in advance for your help.
Mike Nelson, Project Leader
Metrix, Inc.
[email protected]
414-798-8560 x1157
Billy L. Williams, Jr. | email: [email protected]
Sage Solutions, Inc. | Tel: (415) 392-7243 (x506) Fax: (415) 391-3899
| Pager: (415) 605-1791 (page me if urgent)

Hi Michael,
We have done exactly what you describe and have avoided the slow applet
download times. Although it can be a bit tricky, it is possible to use
the ORB bundled inside the Netscape 4.0 browser (Visibroker for Java by
Visigenic). Most of the code should follow Netscape's examples (on
http://developer.netscape.com)--just remember to initialize the ORB by
passing a reference to the current applet in orb_init() (so that you
invoke something like orb_init(this) [assuming you are extending
java.applet.Applet]). Pulling up the Java console within your web
browser should help debug quite a bit (a lot of debug messages will get
printed there the ORB is having problems).
Netscape has just implemented the applet caching schemes you describe,
so it probably shouldn't matter too much if you use another vendor's
ORB (we've done this with Iona's OrbixWeb). If you use ZIP files, they
have to be uncompressed, and I don't think that the browser will cache
them between browser sessions. Netscape 4.0 does seem to handle
compressed JAR files just fine and it does indeed cache them between
browser sessions. I'd go with the JAR format anyway since the ZIP
bundling was just a workaround until Sun got their act together in the
1.1 JDK.
By the way, you also might want to take advantage of the code-signing
and capabilities APIs of Netscape if you are going to invoke methods on
objects not resident on your web server. Otherwise, you will probably
run into the (in)famous browser applet security restrictions and you may
have other problems doing things like callbacks from Forte, etc.
If you want more detail on how it works, let me know and I can post some
examples.
Oh, one last thing: we are a consulting firm specializing in these kinds
of things :)
Bill
Subject: Java Applet IIOP Call-In with Release 3C--How do we speed up download time.
Date: Wed, 2 Jul 1997 09:10:31 -0500
From: Michael Nelson <[email protected]>
To: "'[email protected]'" <[email protected]>
We have successfully implemented a simple Java Applet that calls into
Forte Services via IIOP. However, the duration of the download time
for
Applet and its required class files is UNACCEPTABLE in a typical
INTERNET environment where 28.8K modems and multiple hops around the
net
are not uncommon. We dialed into our network at 28.8K (but no
hopping),
and found that download times varied from 1.5 - 2.0 minutes. This is
unacceptable, even by internet standards. We have been using the
Visigenic Visibroker product as the ORB.
After doing some investigation, we've come up with several ideas to
speed up download time:
1. Figure out how to use the Visigenic components (CORBA/IIOP class
files) that come bundled with the latest version of the Netscape
Navigator browser, so that they don't have to be downloaded
2. Figure out how to use ZIP files. Here's what I've read: "Since
the
introduction of Netscape Navigator 3.0, you can specify an
uncompressed
.zip file as an addition to the code base of your application. By
specifying a ZIP file, the browser will load your applet's classes
from
a specified ZIP file before it searches the code base. This ZIP can
improve applet download time by reducing the number of HTTP
connections
required to fetch applet code. As an added benefit, Netscape caches
the
single ZIP file so that it will not reload your applet unless the date
of the ZIP file has changed."
3. Figure out how to use JAR files. Here's what I've read: "JAR
stands for Java archive. It's a file format based on the popular ZIP
file format and is used for aggregating many files into one. Although
JAR can be used as a general archiving tool, the primary motivation
for
its development was so that Java applets and their requisite
components
can be downloaded to a browser in a single HTTP transaction, rather
than
opening a new connection for each piece. This greatly improves the
speed with which an applet can be loaded onto a web page and begin
functioning. The JAR format also supports compression, which reduces
the
size of the file and improves download time still further."
Unfortunately, we've been unable to get any of these approaches to
work.
Has any one used these or other approaches to speed up applet
download
time? Or, does anyone know of consulting firms that specialize in
this
sort of thing?
Thanks in advance for your help.
Mike Nelson, Project Leader
Metrix, Inc.
[email protected]
414-798-8560 x1157
Billy L. Williams, Jr. | email: [email protected]
Sage Solutions, Inc. | Tel: (415) 392-7243 (x506) Fax: (415) 391-3899
| Pager: (415) 605-1791 (page me if urgent)

Checkpoint SSL Network extender stuck on Java applet when using firefox 4.0.1

I use check point SSL network extender on my mac to access my company's VPN. Since upgrading to 4.0.1, I get the message "Please confirm the use of this Java applet and then refresh or reopen the window.
If you have already disapproved using this applet, you might need to restart your browser before attempting to connect again"
I'll accept, refresh, wait, and then the message comes back. I never get through. I just uninstalled 4.0.1 and went back to 3.6.17 and it's working fine on the old version.

The first thing I notice is that you are using Firefox 4 and that is now out of date, it is not considered secure so it would make sense to upgrade to Firefox 5 (Or Firefox 6 if you read this after the 16th)
You mention Firefox 3.6.17, and although Firefox 3.6 is still (for possibly only a limited time) supported I believe the current version is 3.6.20 (it is certainly at least 3.6.18) so again you are using an out of date version. I am not a Mac user but IIRC some of the recent updates were Mac specific and fixed Mac problems, possibly problems relating to Java.
If you wish to use more than one version of Firefox to test problems developers tend to use separate profiles and custom installs but for ordinary users it may be worth considering firefox [http://portableapps.com/apps/internet/firefox_portable portable] versions. (that tip is applicable mainly to Windows users, no doubt there is also a poratable version for firfox5 Mac users somewhere)

Java Applet IIOP Call-In with Release 3C--How do we speed updownload ti

We have successfully implemented a simple Java Applet that calls into
Forte Services via IIOP. However, the duration of the download time for
Applet and its required class files is UNACCEPTABLE in a typical
INTERNET environment where 28.8K modems and multiple hops around the net
are not uncommon. We dialed into our network at 28.8K (but no hopping),
and found that download times varied from 1.5 - 2.0 minutes. This is
unacceptable, even by internet standards. We have been using the
Visigenic Visibroker product as the ORB.
After doing some investigation, we've come up with several ideas to
speed up download time:
1. Figure out how to use the Visigenic components (CORBA/IIOP class
files) that come bundled with the latest version of the Netscape
Navigator browser, so that they don't have to be downloaded
2. Figure out how to use ZIP files. Here's what I've read: "Since the
introduction of Netscape Navigator 3.0, you can specify an uncompressed
.zip file as an addition to the code base of your application. By
specifying a ZIP file, the browser will load your applet's classes from
a specified ZIP file before it searches the code base. This ZIP can
improve applet download time by reducing the number of HTTP connections
required to fetch applet code. As an added benefit, Netscape caches the
single ZIP file so that it will not reload your applet unless the date
of the ZIP file has changed."
3. Figure out how to use JAR files. Here's what I've read: "JAR
stands for Java archive. It's a file format based on the popular ZIP
file format and is used for aggregating many files into one. Although
JAR can be used as a general archiving tool, the primary motivation for
its development was so that Java applets and their requisite components
can be downloaded to a browser in a single HTTP transaction, rather than
opening a new connection for each piece. This greatly improves the
speed with which an applet can be loaded onto a web page and begin
functioning. The JAR format also supports compression, which reduces the
size of the file and improves download time still further."
Unfortunately, we've been unable to get any of these approaches to work.
Has any one used these or other approaches to speed up applet download
time? Or, does anyone know of consulting firms that specialize in this
sort of thing?
Thanks in advance for your help.
Mike Nelson, Project Leader
Metrix, Inc.
[email protected]
414-798-8560 x1157

We have successfully implemented a simple Java Applet that calls into
Forte Services via IIOP. However, the duration of the download time for
Applet and its required class files is UNACCEPTABLE in a typical
INTERNET environment where 28.8K modems and multiple hops around the net
are not uncommon. We dialed into our network at 28.8K (but no hopping),
and found that download times varied from 1.5 - 2.0 minutes. This is
unacceptable, even by internet standards. We have been using the
Visigenic Visibroker product as the ORB.
After doing some investigation, we've come up with several ideas to
speed up download time:
1. Figure out how to use the Visigenic components (CORBA/IIOP class
files) that come bundled with the latest version of the Netscape
Navigator browser, so that they don't have to be downloaded
2. Figure out how to use ZIP files. Here's what I've read: "Since the
introduction of Netscape Navigator 3.0, you can specify an uncompressed
.zip file as an addition to the code base of your application. By
specifying a ZIP file, the browser will load your applet's classes from
a specified ZIP file before it searches the code base. This ZIP can
improve applet download time by reducing the number of HTTP connections
required to fetch applet code. As an added benefit, Netscape caches the
single ZIP file so that it will not reload your applet unless the date
of the ZIP file has changed."
3. Figure out how to use JAR files. Here's what I've read: "JAR
stands for Java archive. It's a file format based on the popular ZIP
file format and is used for aggregating many files into one. Although
JAR can be used as a general archiving tool, the primary motivation for
its development was so that Java applets and their requisite components
can be downloaded to a browser in a single HTTP transaction, rather than
opening a new connection for each piece. This greatly improves the
speed with which an applet can be loaded onto a web page and begin
functioning. The JAR format also supports compression, which reduces the
size of the file and improves download time still further."
Unfortunately, we've been unable to get any of these approaches to work.
Has any one used these or other approaches to speed up applet download
time? Or, does anyone know of consulting firms that specialize in this
sort of thing?
Thanks in advance for your help.
Mike Nelson, Project Leader
Metrix, Inc.
[email protected]
414-798-8560 x1157

Question about Java applets being blocked.

-I have succeeded in getting the 32 bit Java 8 applet plugin for Windows 7 Firefox v34 running.
However, I have a situation where the applet loader itself has started blocking my applets.
I have allowed the applet through in an unwiedly fashion.
I can't find a way to generally lower the java plugin security applet blocker to allow
unsigned applets. The only option I have is adding
that webpage file reference to the exceptions list, closing the web browser
and restarting it.
The Java control panel Security Level radio buttons
only exist for Very High and High; I do believe I want lower.
However there isn't an auto selection for one.
-How can I just click one button within Firefox to allow
an applet through, and begin to run, if I want?

-I have succeeded in getting the 32 bit Java 8 applet plugin for Windows 7 Firefox v34 running.
However, I have a situation where the applet loader itself has started blocking my applets.
I have allowed the applet through in an unwiedly fashion.
I can't find a way to generally lower the java plugin security applet blocker to allow
unsigned applets. The only option I have is adding
that webpage file reference to the exceptions list, closing the web browser
and restarting it.
The Java control panel Security Level radio buttons
only exist for Very High and High; I do believe I want lower.
However there isn't an auto selection for one.
-How can I just click one button within Firefox to allow
an applet through, and begin to run, if I want?

Tools for Security Audit of Java Applets in a Website

Hello,
I am auditing the Website which has a Java Applet attached to it, I wanted to know, what security tools should I use to check the security of Java Applets.
Thank you

You should also consider that applets are not allowed to access their client system's hardware without being signed; in other words, the user must agree (by clicking a button) to disable the applet security features. Why would you use an applet to do this? Applets are meant to be an extension of a website. You should use an application in this situation.

Firefox 23 is blocking local Java applets

My company's signed Java applet runs fine from online websites. The applet is designed also to be used from CDs and other local file systems. However it does not now run at all when running locally, eg from a URL like this: file:///D|/fiscd/search2.htm
The applet tag looks like this:
<APPLET CODE=fisCD NAME=fisCD WIDTH=500 HEIGHT=300 ARCHIVE="fiscd.jar" MAYSCRIPT>
</APPLET>
I think this started in Firefox 23 and is possibly related to this fix:
http://www.mozilla.org/security/announce/2013/mfsa2013-75.html
Other users are also seeing this problem.
Do you have a fix for this problem?
Can you check that local signed Java applets can run OK please?
Any other suggestions?
Here is the Java applet product info (FindinSite-CD):
http://www.phdcc.com/fiscd/
Thanks in advance, Chris

Thanks. Sorry I should have found that answer myself. Ta Chris

Java applet window blocking yahoo games

not a devloper, but I really need some help handling this java problem. when I log onto yahoo games, bar that says "java applet window" blocks the bottom portion of the screen. how can I get rid of this?

i found out how to get older verison of java6-7 verison .
Go to search bar type in OpenOffice.org 3.0 and download this.it will take about 30 minute to download this file.after download this go to add & REMOVE PROGRAM to see if download and if did delete java 6u10 version . email me at [email protected] to see it work

Java applet security

hello all, i was just wondering if there is any secure way to send information from a java applet to a server, for example a number for storage in a database? I would like to create a very simple game which send the high score back to the server without any possibility of that information being falsified.
Thanks for any advice received.
Dori

Not really. You'd have to trust the users PC, which you can't.
You can make it harder to submit wrong values, but you can't make it impossible.

Security manager & mention "Java Applet Window"

A simple program that displays a frame with one button in it.
The frame displays, no problem.
When a security manager is added "System.setSecurityManager(new SecurityManager());"
and the program is run again a "status bar" is added at the bottom of the frame
mentioning "Java Applet Window".
Why is that, and can it be suppressed ? (I am working in JDK 1.4)
Any tip greatly appreciated

I was dealing with this myself and just discovered that the adding the following line to my security policy removed the message:
permission java.awt.AWTPermission "showWindowWithoutWarningBanner";

Changes in security from 7 update 45 to 7 update 51 and problems with Java applet

Hello,
After the update (from 7 update 45) to version 7 update 51 we've gotten some problems with a Java Applet as it won't run.
When changing security settings to "medium" it works, but it would not run under the default "high" setting. This lead me to update the manifest file as follows:
Manifest-Version: 1.0
Trusted-Only: true
Application-Name: MyApplet
Permissions: all-permissions
Caller-Allowable-Codebase: www.MySite.com
In addition to this, I added the <param> tag in the HTML page.
<applet name="MyApplet" code="MyApplet" archive="MyApplet.jar">
<param name="permissions" value="all-permissions" />
</applet>
The applet is digitally signed with a certificated issued by Verisign.
It now runs on my system. But I noticed that it also runs if I switch the security setting back to "high", which doesn't make any sense to me.
I've tried another computer and to the same thing there. Would not run. I switched to "medium" and and the applet worked. Switched back to "high" and it still works.
I've tried this in both Google Chorme and Internet Explorer 11.
On a third computer it won't run at all, getting a different error message than on the other two, but still related to permissions/security.
The console log message is:
"liveconnect: Security Exception: JavaScript from http://MySite.comn/MyPage.html attempted to access a resource it has no rights to."
Any ideas what I'm missing or what I need to change to get this beast to run everywhere.

I tried changing the Caller-Allowable-Codebase to not include "www." and it started giving the the same error message as for the third machine in the test.
So, I changed Caller-Allowable-Codebase to "*" which made it work on all machines.
I don't quite understand why it acts differently on different machines, if it's ok with www.MySite.com on one of the the machines, it should be OK on all no?
I don't see a problem with letting it be "*" but it would be nice to understand what's going on.

FF plugin checking reports java applet plugin vulnerable on OS X Lion but not Snow Leopard?

On Firefox 10.0.1 running on OS X 10.7.3, the mozilla.org plugincheck tells me that my Java Applet Plug-in is Vulnerable while running the same check on FF 10.0.1 on my Mini running 10.6.8 indicates that the Java Plu-in 2 for NPAPI Browsers is ok. The version of Java on both systems is the same (version 1.6.0.29). Why the discrepancy? Is there something I need to fix on the 10.7.3 system?

No because Java on OS X comes from Apple, not Oracle and is updated whenever Apple gets around to it.

Java Applet Security Restriction?

Hi,
I wrote a java applet and test it on my computer. When I view it with applet viewer I can view the applet correctly. But when I try to view on the Internet Explorer, it said "Java Applet Started" But I didn't see anything on the screen.
This happens when I actually incorporate the JFileChooser. When I take out that, the applet can run.
What I think is, even if I run the applect in Internet Explorer, since I am actually running directly from my computer (i.e C:\Myapplet.html) and not even through Apache or IIS why I won't be able to carry out such operation?

Output from JavaConsole
Exception in thread "AWT-EventQueue-2" java.security.AccessControlException: access denied (java.util.PropertyPermission user.dir read)
     at java.security.AccessControlContext.checkPermission(Unknown Source)
     at java.security.AccessController.checkPermission(Unknown Source)
     at java.lang.SecurityManager.checkPermission(Unknown Source)
     at java.lang.SecurityManager.checkPropertyAccess(Unknown Source)
     at java.lang.System.getProperty(Unknown Source)
     at java.io.Win32FileSystem.getUserPath(Unknown Source)
     at java.io.Win32FileSystem.resolve(Unknown Source)
     at java.io.File.getAbsolutePath(Unknown Source)
     at sun.awt.shell.Win32ShellFolder2.<init>(Unknown Source)
     at sun.awt.shell.Win32ShellFolder2.listFiles(Unknown Source)
     at sun.awt.shell.ShellFolder.listFiles(Unknown Source)
     at sun.awt.shell.Win32ShellFolderManager2.get(Unknown Source)
     at sun.awt.shell.ShellFolder.get(Unknown Source)
     at javax.swing.plaf.metal.MetalFileChooserUI.updateUseShellFolder(Unknown Source)
     at javax.swing.plaf.metal.MetalFileChooserUI.installComponents(Unknown Source)
     at javax.swing.plaf.basic.BasicFileChooserUI.installUI(Unknown Source)
     at javax.swing.plaf.metal.MetalFileChooserUI.installUI(Unknown Source)
     at javax.swing.JComponent.setUI(Unknown Source)
     at javax.swing.JFileChooser.updateUI(Unknown Source)
     at javax.swing.JFileChooser.setup(Unknown Source)
     at javax.swing.JFileChooser.<init>(Unknown Source)
     at javax.swing.JFileChooser.<init>(Unknown Source)
     at FotoUpload.createGUI(FotoUpload.java:48)
     at FotoUpload.access$000(FotoUpload.java:24)
     at FotoUpload$1.run(FotoUpload.java:86)
     at java.awt.event.InvocationEvent.dispatch(Unknown Source)
     at java.awt.EventQueue.dispatchEvent(Unknown Source)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
     at java.awt.EventDispatchThread.run(Unknown Source)
This is what happen when I run my code below
* FotoUpload.java
* Created on November 15, 2006, 11:30 AM
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
* @author Leo Liu
import java.io.*;
import javax.swing.JApplet;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import javax.swing.JComponent.*;
import javax.swing.filechooser.*;
public class FotoUpload extends JApplet implements ActionListener{
    JButton BtnBrowse;
    JPanel PnlUpload;
    JFileChooser fcSelectFile;
    JTextArea log;
    private void createGUI(){
        setLayout(new BorderLayout(5,5));
        //Making Button
        BtnBrowse=new JButton("Browse");
        BtnBrowse.setToolTipText("Click on Browse to select picture");
        BtnBrowse.setAlignmentX(Component.RIGHT_ALIGNMENT);
        BtnBrowse.setPreferredSize(new Dimension(30,20));
        BtnBrowse.addActionListener(this);
        //Putting Button inside the panel and specifying the button size
        JPanel PnlBrowse = new JPanel();
        PnlBrowse.setLayout(new BoxLayout(PnlBrowse, BoxLayout.X_AXIS));
        PnlBrowse.add(Box.createRigidArea(new Dimension(30,20)));
        PnlBrowse.add(BtnBrowse);
        //Create a file chooser
        fcSelectFile = new JFileChooser();
        //Creating Panel to show selected pictures for uploading
        PnlUpload=new JPanel();
        PnlUpload.setBorder(javax.swing.BorderFactory.createTitledBorder("Place Pictures to Upload"));
        PnlUpload.setToolTipText("You can drag and drop images into this area");
        log=new JTextArea(5,20);
        log.setMargin(new Insets(5,5,5,5));
        log.setEditable(false);
        PnlUpload.add(log);
        //adding UI components to Applet
        add(PnlBrowse,BorderLayout.NORTH);
        add(PnlUpload,BorderLayout.CENTER);
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == BtnBrowse) {
            int returnVal = fcSelectFile.showDialog(this,"Select");
            if (returnVal == JFileChooser.APPROVE_OPTION) {
                File file[]= fcSelectFile.getSelectedFiles();
                //This is where a real application would open the file.
                int count=0;
                while(count<file.length)
                    log.append("Opening: " + file[count].getName() + ".\n");
                    count++;
            } else {
                log.append("Open command cancelled by user.\n");
    public void init() {
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createGUI();
}It seems like I need to catch some exception or something. Can anyone help me?

Network speed check Java applet is "security" blocked

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