Java Applet Runtime error

[sarwar1234]

Hello,

I am using Windows Vista Home edition Service Pack 2.....

I am getting a problem while java applets are being loaded into the browser....

For example, if I go to the site
Getting Started With Applets (The Java™ Tutorials > Deployment > Applets)

I dont get the applet view... instead i get an error window.... and when i click the details, I get another window... As shown in the attached figure-1.....

I get similar problem while trying to runn a java applet program... or any jar file... I get a window as shown in figure-2....

I have the latest jdk-6 update-20 installed......
I am trying to get around this problem since last 3 or 4 days but not getting some where...

I will be very thankful for your cooperations....

Best Regards,
Sarwar

[Norm]

Please post the contents of the html file you are using. Also show what other files are in the directory with the html file.

In the html file, remove the .class from the APPLET's code= attribute

[Tolls]

That picture is completely unreadable.

[sarwar1234]

Hello

Thanks very much for the reply....

[sarwar1234]

Hello This what I get as an error in the window.......


Java Plug-in 1.6.0_20
Using JRE version 1.6.0_20-b02 Java HotSpot(TM) Client VM
User home directory = C:\Users\Logic Energy
----------------------------------------------------
c: clear console window
f: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------


load: class HelloWorld.class not found.
java.lang.ClassNotFoundException: HelloWorld.class
at sun.plugin2.applet.Applet2ClassLoader.findClass(Un known Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unk nown Source)
at sun.plugin2.applet.Plugin2Manager.createApplet(Unk nown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionR unnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception: java.lang.ClassNotFoundException: HelloWorld.class




Many Thanks for the help.....

Best Regards,
Sarwar

[Tolls]

See Norm's post.
Your Applet tag might well be wrong.

[sarwar1234]

Hello,

Alternatively, the error can also be seen in this way... when I try to open a very simple class file or java file to run.....

I get the following error in a window:



Windows ® Installer. V 4.5.6002.18005

msiexec /Option <Required Parameter> [Optional Parameter]

Install Options
</package | /i> <Product.msi>
Installs or configures a product
/a <Product.msi>
Administrative install - Installs a product on the network
/j<u|m> <Product.msi> [/t <Transform List>] [/g <Language ID>]
Advertises a product - m to all users, u to current user
</uninstall | /x> <Product.msi | ProductCode>
Uninstalls the product
Display Options
/quiet
Quiet mode, no user interaction
/passive
Unattended mode - progress bar only
/q[n|b|r|f]
Sets user interface level
n - No UI
b - Basic UI
r - Reduced UI
f - Full UI (default)
/help
Help information
Restart Options
/norestart
Do not restart after the installation is complete
/promptrestart
Prompts the user for restart if necessary
/forcerestart
Always restart the computer after installation
Logging Options
/l[i|w|e|a|r|u|c|m|o|p|v|x|+|!|*] <LogFile>
i - Status messages
w - Nonfatal warnings
e - All error messages
a - Start up of actions
r - Action-specific records
u - User requests
c - Initial UI parameters
m - Out-of-memory or fatal exit information
o - Out-of-disk-space messages
p - Terminal properties
v - Verbose output
x - Extra debugging information
+ - Append to existing log file
! - Flush each line to the log
* - Log all information, except for v and x options
/log <LogFile>
Equivalent of /l* <LogFile>
Update Options
/update <Update1.msp>[;Update2.msp]
Applies update(s)
/uninstall <PatchCodeGuid>[;Update2.msp] /package <Product.msi | ProductCode>
Remove update(s) for a product
Repair Options
/f[p|e|c|m|s|o|d|a|u|v] <Product.msi | ProductCode>
Repairs a product
p - only if file is missing
o - if file is missing or an older version is installed (default)
e - if file is missing or an equal or older version is installed
d - if file is missing or a different version is installed
c - if file is missing or checksum does not match the calculated value
a - forces all files to be reinstalled
u - all required user-specific registry entries (default)
m - all required computer-specific registry entries (default)
s - all existing shortcuts (default)
v - runs from source and recaches local package
Setting Public Properties
[PROPERTY=PropertyValue]

Consult the Windows ® Installer SDK for additional documentation on the
command line syntax.

Copyright © Microsoft Corporation. All rights reserved.
Portions of this software are based in part on the work of the Independent JPEG Group.



I am very thankful for your cooperations....

[Tolls]

What does "when I try to open a very simple class file or java file to run" mean?
How are you "opening" it?
How are you running it?

Is it a command line, is it an IDE, do you have a JRE installed?

[sarwar1234]

Hi Norm,

I am not sure about things... But the problem I metioned about at first place, occurs whenever I open the web page... any web page and I cant see some of the applets / images.....


the Image3 will explain the problem.....

Many Thanks

[sarwar1234]

Hello,

Like very simple, I downloaded the applet source code from the link:

Getting Started With Applets (The Java™ Tutorials > Deployment > Applets)


I can see the source... The simple applet java file and the class file and other files etc...

I just double click the class file, But Then I get that message.... the Windows Installer one.....

But when I run it in the eclipse... It works.....

When you try to open that link above, do you see any image after the first line....
I am not getting that.. and there is an error sign.....
Thats my main problem.....


Thanks ...

Regards,
Sarwar

[Norm]

Did you try this:
In the html file, remove the .class from the APPLET's code= attribute

[sarwar1234]

Hello Norm,

I am not exactly getting by what you said... like try to remove .class from the applet code attribute....

If I am not wrong, let me explain this to you.... At the moment I am not programming the applet.... so dont know about the code stuff much....

But the thing is, I am the error every time I try to execute a file that uses Java... A permission windows appers in vista.... asking me

A program needs your permission to continue

Java(TM) SE Runtime Environment 6.0 Update 13
Sun Microsystems, Inc.

and then i press continue.... and then program does not execute and another window appers

Windows Installer

Windows ® Installer. V 4.5.6002.18005

msiexec /Option <Required Parameter> [Optional Parameter]

Install Options
</package | /i> <Product.msi>
Installs or configures a product
/a <Product.msi>
Administrative install - Installs a product on the network
/j<u|m> <Product.msi> [/t <Transform List>] [/g <Language ID>]
Advertises a product - m to all users, u to current user
</uninstall | /x> <Product.msi | ProductCode>
Uninstalls the product
Display Options
/quiet
Quiet mode, no user interaction
/passive
Unattended mode - progress bar only
/q[n|b|r|f]
Sets user interface level
n - No UI
b - Basic UI
r - Reduced UI
f - Full UI (default)
/help
Help information
Restart Options
/norestart
Do not restart after the installation is complete
/promptrestart
Prompts the user for restart if necessary
/forcerestart
Always restart the computer after installation
Logging Options
/l[i|w|e|a|r|u|c|m|o|p|v|x|+|!|*] <LogFile>
i - Status messages
w - Nonfatal warnings
e - All error messages
a - Start up of actions
r - Action-specific records
u - User requests
c - Initial UI parameters
m - Out-of-memory or fatal exit information
o - Out-of-disk-space messages
p - Terminal properties
v - Verbose output
x - Extra debugging information
+ - Append to existing log file
! - Flush each line to the log
* - Log all information, except for v and x options
/log <LogFile>
Equivalent of /l* <LogFile>
Update Options
/update <Update1.msp>[;Update2.msp]
Applies update(s)
/uninstall <PatchCodeGuid>[;Update2.msp] /package <Product.msi | ProductCode>
Remove update(s) for a product
Repair Options
/f[p|e|c|m|s|o|d|a|u|v] <Product.msi | ProductCode>
Repairs a product
p - only if file is missing
o - if file is missing or an older version is installed (default)
e - if file is missing or an equal or older version is installed
d - if file is missing or a different version is installed
c - if file is missing or checksum does not match the calculated value
a - forces all files to be reinstalled
u - all required user-specific registry entries (default)
m - all required computer-specific registry entries (default)
s - all existing shortcuts (default)
v - runs from source and recaches local package
Setting Public Properties
[PROPERTY=PropertyValue]

Consult the Windows ® Installer SDK for additional documentation on the
command line syntax.

Copyright © Microsoft Corporation. All rights reserved.
Portions of this software are based in part on the work of the Independent JPEG Group.



May be, I am not getting your point completely.... So if you can suggest me in a bit detail....

Many Thanks for the cooperation...

Best Regards,
Sarwar

[Norm]

class HelloWorld.class not found.

I was trying to solve the above problem.
If you are not getting that error when you load the html with applet into a browser then you can ignore my suggestion.

If you are getting that error and don't understand my suggestion, then copy and paste here the <APPLET tag from the html file and I will show you how to remove ".class" from the code= attribute.