applet security exception

[Arjun Shastry]

Hi,
I am trying to run the applet(JApplet) from browser.I am using NetBeans hence including "swing-layout-1.0.3.jar". From NetBeans I am able to run the applet.But in browser,I am getting an exception. In HTML, I am writing this-

 <APPLET codebase="classes" code="com/abc/blr/RVAApplet.class" archive="com/abc/blr/swing-layout-1.0.3.jar" width=350 height=200></APPLET>    

I am getting the following exception-

  java.security.AccessControlException: access denied (java.util.PropertyPermission sun.arch.data.model read)
	at java.security.AccessControlContext.checkPermission(Unknown Source)
	at java.security.AccessController.checkPermission(Unknown Source)
  

Do I need to change java.policy file in JRE directory? If yes, what should I add in it?

Thanks

[Ulf Dittmer]

It's probably easier to sign the applet, especially if you expect other people to use it as well. See http://faq.javaranch.com/java/HowCanAnAppletReadFilesOnTheLocalFileSystem for more information on both approaches; it also contains an example of the PropertyPermission required here.

[Arjun Shastry]

Thanks. Using keytool and jarsigner command I created keystore and certificate and was able to create Signed applet.
But when I run the applet in the browser, I am getting the same error-

  java.security.AccessControlException: access denied (java.util.PropertyPermission sun.arch.data.model 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 [b]java.lang.System.getProperty(Unknown Source)[/b]
	at com.tibco.tibrv.Tibrv.loadLib(Tibrv.java:428)
	at com.tibco.tibrv.Tibrv.open(Tibrv.java:252)
	at com.kar.city.RVAConenctor.init(RVAConenctor.java:37)
	at sun.applet.AppletPanel.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)
  

I have set the contents of java.policy (jre/lib/security directory) like this-

   

grant codeBase "file:/C:/Test/app/SRVA.jar" {
  permission java.io.FilePermission "<<ALL FILES>>", "read";
  permission java.io.FilePermission "<<ALL FILES>>", "write";
  permission java.util.PropertyPermission "*", "read, write";
  permission java.util.PropertyPermission "user.home", "read";
  permission java.lang.RuntimePermission "*";
};
 

[Arjun Shastry]

Problem was with native implementation(of Tibco) than permission of Applet.