Strategy + Java Applet file permission

Hello world

I developed a small Java applet for testing purposes.
The purpose of the applet is getting data from a MySql database and displays it in a JLabel.
I use a MySql jdbc layer contained in a Jar file.

I tested the applet locally via Eclipse and it works fine.
Then I packed my ".class" files into a Jar file.
I downloaded the Jar file on the server as well as the jdbc Jar file.

I tried to launch the applet located on the server of my browser (IE9).
An error has occurred.
I analyzed the results in the Java console.
As a result, the reason for the problem:
I miss a grant of permission in my policy file.
The missing line is: permission java.util.PropertyPermission "file.encoding", "read";

For more information, the policy file is located at: jre7. lib | Security

I do not want to ask users to my future applet to change their policy file.
So, I wonder if there is a way to examine a policy file custom during the execution of a Java applet.
The custom policy file would occur on the same server as the applet is.

Thanks in advance for your help.

841232 wrote:
But, at the same time, I encountered another problem.
My applet does not all packages of the MySQL server.
I wonder if my two self-signed applets cannot communicate with a remote machine because it is not the machine where the jars.
I know that the applets of sand in box may not.

It is also possible that there is no path network around where the applet runs on the MySQL server. (Which in general would be a good thing, because exposing a database server to the Internet can lead to problems of security of the data.)

Tags: Java

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    I created a Java bean that displays a dialog box. When I invoke the bean of the forms there is a "Java Applet Window" message appears at the bottom of the window. Can anyone suggest me how to get rid of this? Thank you.

    Concerning
    Barro

    10g Developer Suite installation created files in your directory/forms/java such as makecert.bak, signer.properties and sign.bat.

    You can find more information by following this link.

    François

  • When Mozilla going to stop the Support of Java Applet?

    Need to know the details about when Mozilla will stop the Support of Java Applet.As it has been removed from the other browser.

    Yes, most of the default plugins that require the approval of the site by site. This is to protect you from attacks of ' reader of. If you want to give prior approval to all the sites to use the Java plugin, you can change the setting in the page modules. Either:

    • CTRL + SHIFT + a
    • "3-bar" menu button (or tools) > Add-ons

    In the left column, click on Plugins. Search for ' Java (TM) platform S.-E. 8 ' and there you can change 'Request to activate' "Always turned on" If you wish.

  • Java applets on "Allow and Remember" shows nothing (Ubuntu)

    I tried the Java 7 update to Java 8 because of the safety block Firefox did the plugin Java 7 - However, even after I deleted libnpjp2.so(as root) in order to update the plugin and make a new hard link to the 8 libnpjp2.soJava, he always tells me that I use a version of Java insercure and even if I click on 'Allow and Remember' or "Now allow" the Java applet shows me nothing but a White Plains region when the applet has been, (see attachments). I have not tried reinstall Java because I do not know how and I don't think it would help in this case. I also tried to use IcedTea to execute Java applets. My Java is installed but a PPP as appearently "default-jre" is updated. Java programs that are downloaded (e.g. Minecraft) still work. This is a mistake on the side of Firefox, or I have it will be proposing to the Ubuntu Forums?
    System:
    32 bit with Firefox on Ubuntu 12.04 39

    Do you see Java in Add-ons - Plugins Manager?
    If so, which version?

  • Why I can't install java applet for Google Drive. Today, I have to use Google Chrome. I did everything according to your instructions for modules.

    I'm trying to download maps in GoogleDrive. In Firefox, I get the info that the java applet can not be installed. After installing GoogleChrome, it works perfectly.
    I did everything according to your instructions re. admitting Add-ons, etc.

    The settings you need are in the Java Control Panel applet.

    1. ) Control panel open
    2. ) Open Java applets
    3. ) On the Security tab
    4. ) Site list click edit
    5. ) Add click
    6. ) Type the URL of the Google site, such as https://drive.google.com
    7. ) Click OK
    8. ) Return to add the Google cmdlet you need.
  • Java applet blocking firefox start up

    everytime I open the java applet for the first time the applet crashes sometimes and sometimes simply opens no effect is impractical however after a few trials finally open dose applet. Thanks for any help on this problem on a mac or a Linux software.
    PS I use a Mac book pro if that should help.

    https://support.Mozilla.org/en-us/KB/Profile-Manager-create-and-remove-Firefox-profiles#OS=Mac & Browser = fx22

  • How can I stop Firefox from blocking a Java applet on a website that I trust?

    I'm trying to run an application that displays the competing routes during an orienteering event. My problem is that Firefox is blocking the Java applet. I get a window saying "blocked by security settings Application. Your security settings have blocked an app to run with a precarious jre or has expired. »

    I tried to look at the Firefox Help on "How to enable Java if it's been blocked", but it does not help. He's talking about by clicking on the Red plugin icon in the address bar, but it is not a plugin red icon in the address bar.

    The application is www.epoc.routegadget.co.uk. It worked when I used it last Sunday.

    Help, please!

    Hello, this warning does not firefox but the java plugin itself - please update your plugins.

    more information about the java security settings are also available to oracle support: https://www.java.com/en/download/help/jcp_security.xml

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