Can't load applet

i am new to java applet. i wrote a small applet with japplet. but i can't load it by open html file locally. the html looks like:
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=windows-1252">
<TITLE>
HTML Test Page
</TITLE>
</HEAD>
<BODY>
url.Applet1 will appear below in a Java enabled browser.<BR>
<APPLET CODE = "TestApplet1.class" CODEBASE = "./" WIDTH = 500 HEIGHT = 500 NAME = "TestApplet" ALIGN = top VSPACE = 0 HSPACE = 0>
</APPLET>
</BODY>
</HTML>
and TestApplet1.class is sitting at the same directory as the html. what did i miss? thanks for help.

Don't use the applet tag, it's been depreciated. Use the object tag.
For IE it will download the appropriate jre or you download and install it yourselve at this site.
For Mozilla check "about plugin" in the main menu.
<DIV id="dvObjectHolder">Applet comes here</DIV>
<script>
// using xhtml works but javascript to java doesn't work anymore so here is the scripted version on how
// to set the object tag
if(window.navigator.appName.toLowerCase().indexOf("netscape")!=-1){ // set object for Netscape:
     document.getElementById('dvObjectHolder').innerHTML = "        <object ID='jsApplet' classid=\"java:someApplet.class\"" +
                "height=\"100\" width=\"100\" onError=\"changeObject();\"" +
          ">" +
                "<param name=\"mayscript\" value=\"Y\">" +
        "</object>";
}else if(window.navigator.appName.toLowerCase().indexOf('internet explorer')!=-1){ //set object for IE
     document.getElementById('dvObjectHolder').innerHTML =      "<object ID='jsApplet' classid=\"clsid:8AD9C840-044E-11D1-B3E9-00805F499D93\"" +
               "         height=\"100\" width=\"100\" >" +
               "   <param name=\"code\" value=\"someApplet.class\" />" +
               " </object>"
</script>

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I can't load applets...

I have the "red x problem"... I have the latest updates of the JVM and I use the IE browser. The problem is I can't load ANY applets, I even tried it with my firewall turned off and all the suggestions on the Java help pages. Here's the dump from the Java-console when trying to open a game on the Java homepage: (sorry that some of it is in swedish)
Java Plug-in 1.5.0_06
Anv�nder JRE-version 1.5.0_06 Java HotSpot(TM) Client VM
Anv�ndarens hemkatalog = C:\Documents and Settings\Tomas
inl�sning: klassen Game.class finns inte.
java.lang.ClassNotFoundException: Game.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-12" java.lang.NullPointerException
     at sun.plugin.util.GrayBoxPainter.showLoadingError(Unknown Source)
     at sun.plugin.AppletViewer.showAppletException(Unknown 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(Unknown Source)
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     at java.lang.Thread.run(Unknown Source)
Any solutions would be greatly appreciated...

I've got the exact same problem and I've been trying everything for monthes, clean installs, firefow, opera, ie, ie7.. Unsuccessfully, and I installed java just after a fresh win xp sp2 install, and it's up to date.
I really don't know what to do and I hope it will be corrected in future releases.

Can't load applet from a kerberized server

Hi there,
I have the following problem:
There's a java applet served as part of a web application. The User accessing the java applet should be authenticated by the web application. When this is done with basic authentication - the applet works fine.
However when a kerberos authentication is configured on the webserver(using spnego module) - the applet can't be loaded.
I log in to Windows XP using my user and pass. Then using IE I am automatically logged into the web application. I open the page on which the applet is embed, but the JRE can't load it(saying a ClassNotFoundException) The server's access log reveal that the jar can't be loaded because of authentication error:
- - [05/Oct/2011:15:19:54 +0200] "GET /peria/Grid.jar HTTP/1.1" 401 490
- - [05/Oct/2011:15:19:54 +0200] "GET /peria/Grid.jar HTTP/1.1" 401 490
- - [05/Oct/2011:15:19:54 +0200] "GET /peria/Grid.jar HTTP/1.1" 401 490
It seems as if the JRE is having problems authentication itself in front of the server? Could it be that or it is another issue?
Note that I can access the jar file directly via the browser. But when I open the page that has it embed - the applet could not be loaded due to ClassNotFound
Would anyone be so kind as to point me in the right direction?

One more question:
Do I need to configure the JRE on the Client side in order to open the Applet on the kerberized server?
Currently the JRE can't authenticate and the applet is not loaded due to Not authenticated (401) error.
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Can t load applets

i ve created a simple JApplet with netbeans, so i can view a JSP that loads this applet. But if a try to make a HTML file (without netbeans) like this
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title></title>
</head>
<body>
<applet code="NewJapplet.class" ></applet>
</body>
</html>
does 'nt work!!! The NewJApplet.class is in the same folder of the HTML file, of course.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01
Transitional//EN">
<html>
   <head>
   <title></title>
</head>
   <body>

<applet
code="NewJapplet.class"
width = 500
height =500
>
</applet>
</body>
</html>-----
Nywled
Message was edited by:
Redxxiv
Message was edited by:
Redxxiv

Can i load a class in subdirectoy inside a jar file using applet tag?

hi every one.. thank you for reading ... i am really in dire need for the solution..
my problem is that i have a jar file contianing a package which inturn contains my applet class...
i am trying to access this applet class using a applet tag in html file. this html file is in same directory as the jar file. i am having no problems in windows but when i am doing this in linux apache server i was getting class not found exception. (already checked the file permissions). and when i am successful when using simple package directory instead of jar file . so gist of my quesition is "can i load a class in subdirectoy inside a jar file using applet tag in a html file"?

When you tested in Windows were you using Internet Explorer? On Linux you will be using a different browser, usually Mozilla of some version, or Firefox. Note that the HTML tags for applets will be different between the browsers if you are using the object tag. Principally the classid value for the object tag will differ between Firefox and Internet Explorer.

Can't load Java applets in Safari

Ever since I installed Snow Leopard, Safari can't load Java applets. I get a blue Lego brick with a question mark, and a message telling me that Java was not found.
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Create another admin user account log into it, and see if the problem persists. If not, the issue's within the original account, usually amongst preference (plist) files. If so, then it's system-wide and reinstalling the 10.6.2 COMBO update, repairing permissions, and restarting should do the trick.

How can I load an applet using Java Plug-in?

I have written an applet and have tested with appletviewer, but I can't load it from a browser. Ghlin told me that I need to use Java Plug-in to load it. Please tell me how.

Click on the Products and API link at the top left of this page. Download the Java Plugin. Be sure to get the developers version. Inside that developer's version there is a tool called HTMLConverter. Run HTMLConverter on your HTML and it will modify the applet tag in such a way that if the user already has the Java Plugin then it will use it. IF not, then the user will be asked if he wants to download it.

I am running 10.5.8, and just updated my java to java 5 update10. Now my firefox is missing the Java plugin, and I can't load any Java applet at all. When I try it with Safari, it hangs when certain Java applet loads. HELP!!!

Suddenly my Java plugin is missing and i can't load any Java with Firefox at all, even though i have it enabled in the browser! i've tried loading in java embedding plugin, but it doesn't work. what should i do???

It's not in Tools> Add-ons >plugins? Should be Java Plug-in 2 for NPAPI browsers 13.5.0. What are you seeing there? I don't think it's called the embedding plugin any longer.
Might try getting the Firefox 5 standalone application. Trash the current one and replace it. Doing this won't affect your Profile or any settings.
http://www.mozilla.com/en-US/firefox/all.html
If it's enabled, how can it be missing?
If this doesn't work, ask here. No need to register. Make sure you put (Mac) in the title.
http://forums.mozillazine.org/viewforum.php?f=38
Message was edited by: WZZZ
EDIT. Oops, may be different for 10.5.8. Was thinking recent Java update for 10.6. But try installing a new app anyway. In the past, this got me the latest Java plugin.

Applet can't load when using Mozilla Firefox and IE Tab

I have a page that includes an applet
I must include page within the IE Tab rules for auto procces because of design aspects
When the page loads, Firefox tells: load: class XXXXX not found
This very same page does not fail to load applet if not included in IE Tab Rules
I tried the latest versions of Firefox (3.0beta) and IE Tab(1.5)
It appears to be a Mozilla Firefox problem
But, any way, any idea?

I just discover Mozilla Firefox does not work with deprecated Applet tags.
I must use Object tags.
Since Netscape and Safari does not acept properly Object tags, i decide to use a javascript to switch between both methods.
Here a sample:
<%
CARPETA = Request.Form("UltimoArchivoCarpeta")
ArchivoProcesar = Request.Form("UltimoArchivoArchivo")
ArchivoProcesar = CARPETA & ArchivoProcesar
ArchivoProcesar = replace(ArchivoProcesar,"\","\\")
URLACTUAL = Request.ServerVariables("SERVER_NAME")
URLACTUAL = "http://" & URLACTUAL
%>
<script language="javascript">
var _app = navigator.appName;
if (_app == 'Microsoft Internet Explorer') {
document.write('<OBJECT ',
'classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93"',
' width="0" height="0">',
'<PARAM name="code" value="JUploadApplet.class">',
'<PARAM name="archive" value="<%=URLACTUAL%>/java/ddsApplets.jar">',
'<PARAM name="file" value="<%=ArchivoProcesar%>">',
'<PARAM name="urlUpload" value="<%=URLACTUAL%>/VENTAS_UPLOAD/ConfirmarUploadPedidos.asp">',
'<PARAM name="urlRedir" value="<%=URLACTUAL%>/VENTAS_UPLOAD/MostrarPreviewArchivo.asp">',
'<PARAM name="urlFault" value="<%=URLACTUAL%>/SimpleError.asp">',
'</OBJECT>');
else { 
document.write( '<APPLET code="JUploadApplet.class"',
'archive="<%=URLACTUAL%>/java/ddsApplets.jar"',
' width="0" height="0">',
'<PARAM name="file" value="<%=ArchivoProcesar%>">',
'<PARAM name="urlUpload" value="<%=URLACTUAL%>/VENTAS_UPLOAD/ConfirmarUploadPedidos.asp">',
'<PARAM name="urlRedir" value="<%=URLACTUAL%>/VENTAS_UPLOAD/MostrarPreviewArchivo.asp">',
'<PARAM name="urlFault" value="<%=URLACTUAL%>/SimpleError.asp">',
'</APPLET>');

Loading applet for a jar within an ear

Hi,
Apologies if my question sounds ignorant, this is the first time i'm playing with applets.
I'm trying to load an applet from a JAR (applet.jar) which contains all the files specific to the applet. The applet.jar resides within an ear (application.ear) which is deployed on JBoss.
The applet related stuff is in the package com.dms.applet (which makes up the applet.jar)
My index.html resides in a war file (webapp.war), which essentially contains a bunch of servlets. Index.html is a two frame page, which tries to load the applet in one frame and a servlet in another (servlets work fine).
My <APPLET> tag for the frame in which the applet is displayed (is another html file - applet.html) looks something like this:
<html><body>
<APPLET
     code="com.dms.applet.NavigationApplet.class"
     codebase=./"
     archive="applet.jar, application.ear"
     width=200
     height=500
>
</APPLET></body></html>
however, the applet always fails to load, i get the following exception when i open the java console:
java.lang.ClassNotFoundException:
com.dms.applet.NavigationApplet.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
load: class com.dms.applet.NavigationApplet.class not found.
java.lang.ClassNotFoundException:
com.dms.applet.NavigationApplet.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
It seems evident that the applet class loader can't find my applet.class and hence can't load it. I guess that its something wrong with my <APPLET> tag, but can't quite seem to get my finger on it. Do i need to explicitly tell the class loader to look for it in the applet.jar which is in the applicatin.ear?
Any help would be very much appreciated.
Thanks in advance
EnterpriseJavaBones

Hi,
I managed to fix this problem. For those who mite come across the same issue in the future, this is how i did it.
I put the applets code in the war file under an applet dir. That the the index.html is in the root (of the war dir) and the applets code is in a /applet dir.
Hence the codebase simply reads, codebase="applet/"
Cheers
EnterpriseJavaBones

Could not load applet in a browser using jre 1.6.0_06

Hi,
I am facing problem with loading applets when the browser uses jre 1.6.0_06.
Not able to understand what actually the problem is, I tried to check with a small applet that would simply print Hello World on the java console. Even this applet also could not be loaded on the browser. I could load this applet in the test environment of eclipse, but not able to load it on the browser when the applet is deployed on Tomcat.
We have no problems in loading applet if the browser is using an earlier version of the jre.
One more thing we have found out that, if we change the SSL cipher suite of the ssl.conf file such that it can support weaker protocols, my applet works with jre 1.6.0_06 also.
But one thing we could not understand is that why changes in SSL cipher suite of the ssl.conf file creates problem in loading the applet, only in case the browser is using jre 1.6.0_06. I mean to say that changes in the SSL cipher suite does not create any problem in loading the applet if my browser is using an earlier version of jre 1.6.0_06.
Please help me out as I don't have any clue regarding this problem.
Thanks in advance.

Hi,
We have found a wor around for this problem.
The following option has been unchecked and the applet could be loaded.
Go to java control panel
Under the Advanced Tab
Under the Security section
Uncheck the last option "Use TLSv1.0".
This makes the applet work.
But could not understand as why this is creating a problem.
We have tried to include TLSv1.0 in the cipher suite of our apache server, while keeping the above option in java plugin control panel checked, but even that did not solve the problem.
Please help me of how should I proceed for this problem, as I am totally stuck.
Thank you.

How can I load a CMYK jpeg image

How can I load a CMYK jpeg image (originally saved from Photoshop) and then
turn it into an rgb BufferedImage, in order to display it on screen in an
applet?
I first tried ImageIO.read(), but that does not work for cmyk jpegs. I then
looked into the com.sun.image.codec.jpeg package, and tried methods like
decodeAsBufferedImage() and decodeAsRaster().
The first one (decodeAsBufferedImage) returned an image, but it seems that
it was interpreted as an ARGB, and the colors were incorrect.
I then read the documentation which (amongst many other things) stated that
"If the user needs better control over conversion, the user must request the
data as a Raster and handle the conversion of the image data themselves."
This made sense, so I took to decodeAsRaster(), only to find that I could
not figure out how to carry out the desired conversion.
Of course, I have looked into the documentation for BufferedImage, Raster,
ColorModel, ColorSpace etc, but after a while I was lost. (Before I got lost
I read that you can convert images with the help of methods like toRGB,
toCIEXYZ.)
I have a feeling that this is probably pretty simple if you just know how to
do it, but I sure would need some directions here.
Any help would be appreciated. Thanks.

You can either use the "Place" command from the main menu, under "File", or you can just open it, select the move tool "V", the click in the image and drag it to the other file's tab.

LOADING APPLET TO SMARTCARD

How do I load my applet (cap file) to my smartcard using JCOPToolkit ????
Also how do you send APDUs to test the applet?
Kind regards
Saeed

are you want to use JCShell to load applet to the smartcard?
just set the shell properties to (PC/SC)
1.initialize
2.authenticate
3.load package
4.install applet
or you can type the apdu by yourself
you also can tyep "help"
to check how to use install
just type install, you can see such '-p'
is set the applet have pin-change privilege

NEW to J2EE----Class(within WEB-INF) can't access applet

I admit I'm a newbie. Situation: an applet can import packages or individual classes that are located in WEB-INF dir. Is the reverse true, that the same classes can touch the applet? If so, how do you implement this, tried to import applet class, no luck though. I figure the reverse isn't true. Just wanted some ideas for a work around and or confirmation of my question. Thanks

ok, security isn't an issue or concern since this is an intranet app. What I am trying to do is load and reload data to a JTable in an applet. The code that retrieves this data is located in WEB-INF. Is there a work around to make this work.

How to "Load" Applet class to current Applet?

I have to write a simple Applet to detect the JVM version of the browser, and the flow is:
1.Detector.class (Applet) load in a html page, its class version is 1.5
2.It checks whether the JVM version of the browser is 1.5 / 1.6.
3.If it is 1.5, a new browser window popup and links to jre download page.
4.If it is 1.6, it loads a Main.class (Applet), which class version is 1.6
My question is, if the codes inside the Detector.class detects the JVM version is 1.6, HOW can I LOAD the Main.class (Applet) to the current scene?
Thanks for any suggestion and help.

roamer wrote:
..My question is, if the codes inside the Detector.class detects the JVM version is 1.6, HOW can I LOAD the Main.class (Applet) to the current scene?
Thanks for any suggestion and help.I suggest you change the flow.
1. Go to the applet page with both the Main.class *&* the version check applet.
2. If <1.6 is detected, have the version check applet redirect to the the 'download Java' page.
Alternately:
1. Go to the version check page.
2. If 1.6+ is detected, redirect to the Main.class page, else redirect to 'download Java' page.
I developed the [Version Check|http://pscode.org/jre.html] applet that can handle either of those alternatives.
Another approach is to use the deployJava.js that checks Java versions before launching the applet.
I also offer Wrapplet to do both the version checking and load 'child' applets. But note:
1) With the other better alternatives, I have not looked closely at the code in a long while.
2) Loading one applet in another is possible, but not easy.
3) I half expect that each new Java micro-version will ruin it.

Can't load applet

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