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Did Java Web Start get properly installed? |
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| This is an easy test. Using the link below, you go to the Sun Microsystem's
web site and try to run their simple demo applications. |
Java Web Start simple tests
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 Mac users, try the
Apple supplied demos. See the section "Welcome to WebStart"
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The above link will also help you resolve many of the problems you might
have with Java Web Start.
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Your browser is asking dowloading or file download |
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If you see one of the messages below then the Java Web Start is not properly
installed. As a test, you can compare the windows below after you click
here: Run the application. Cancel out of the window that is shown or press "back". Netscape
users should go here to resolve. MS Internet explorer should go here to resolve. |
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The XML page cannot be displayed. Or a blank page.
# IP Protector delivery
# DigiStamp, Inc.
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or, one of these problem windows:
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Netscape 6 and 7 Users |
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Netscape users may need to register Java Web Start manually. If you see
one of the screens above and the Java Simple Tests do not run, then please follow this procedure. You will be configuring
Netscape to use Java when it encounters a file of type JNLP (Java Network
Launching Protocol).
Closing and restarting Netscape after installing Java can often resolve
Web Start issues.
- From your Netscape menu, select Edit -> Preference. You'll see the preference
window.
- In the left pane (of the preference window), choose Navigator -> Helper
Applications.
- On the right pane, click "New Type..."
- In the "New Type" window, fill the following information.
- Description of type: JNLP
- File extension: jnlp
- MIME type: application/x-java-jnlp-file
- Application to use: C:\Program Files\Java Web Start\javaws.exe (or your
path to javaws.exe)
- After setting this options, please return to here and try to run the application.
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Check if Java is installed on your computer. |
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A simple test to check if Java is installed is by entering this command
and the command line:
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On Windows enter: java -version
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You should see something very similar to this:
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java version "1.4.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-b21)
Java HotSpot(TM) Client VM (build 1.4.1-b21, mixed mode)
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If you need to install Java, access the Sun web site for Java Installation here and complete the installation. This link includes some abilities to check
if you already have Java and if you need to upgrade.
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Message "Unable to launch IP protector" |
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The above message is sometimes combined with the message "The following
file is missing" <jnlp>"
This problems has been observed when the Java Web Start proxy settings
are incorrectly set. You can check the setting in the Java Web Start Application
Manager.
Java Web Start application managers uses the Internet to retrieve the software.
The installation process attempts to copy the settings of your Browser
into the Web Start environment.
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Proxy Server and Firewall considerations. |
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Proxy servers are used in some network configurations - for example, users
in a corporate office environment. Java Web Start software must be configured
with the correct proxy settings in order to launch applications from outside
your firewall. Java Web Start software will automatically try to detect
the proxy settings from the default browser on your system. Sun provides
some documentation to help you configure your computer to use a proxy server
here |
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Minimum system requirements. |
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Java is a language designed to run on multiple platforms (different OS,
CPU, browsers) but does have minimum requirements. These are:
- Minimum of 32MB RAM for the virtual machine. This means that you would
require at least 64MB RAM for your machine to be able to run any application
satisfactorily.
- Minimum of 300MHz Pentium II class machine or higher. AMD K6-2 of 350MHz
or higher.
- Minimum of Graphics card capable of 16bit color.
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Other Technical Problems |
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Sun Microsystems has provided problem diagnostic help for Web Start here.
We can also be of assistance and appreciate any feedback about your experiences,
contact support@DigiStamp.com. Please provide information about your specific experience, including,
for example:
- Type and version of the operating system you are using (example: Windows
2000, NT 4.0, Service Pack 6a – Red Hat Linux 7.3 Desktop) Go to Windows
Explorer, About or System Information.
- Type and version of the browser you are using (go to the About screen,
example: Internet Explorer 6.0sp1 – Mozilla v1.1)
We make the web site usable for as many browsers, operating systems and
platforms as possible, and we appreciate notification of any platform-specific
problems. |
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What is a "JNLP" file? |
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Our IP-Protector software uses a JNLP file to start the application. An analogy may be helpful to describe the purpose of the JNLP file: A file whose name ends with .PDF means that it can be opened with Acrobat Reader. Your Internet browser knows to use the Acrobat Reader program (a browser plug-in) to display a .PDF file. A file of type .JNLP means that your browser should use Java to open the .JNLP file. The installation process on our web site does two things: 1. Installs Java 2. Associates the file type of .JNLP with Java.
The content if the JNLP file is a primarily the name of the software and
a pointer to where the software is stored on your computer. When you are at our web page and click on "just click and go",
this is a JNLP file that you clicked on. If all is installed properly,
then Java should start and run the application. If Java is not installed
properly, the browser will as you if you want to download the file because
it does not know there is another program (a plug-in) that should be used
to open the .JNLP file.
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