Java Programming question

Posted on 1997-06-27
Last Modified: 2010-04-16
Need to download a trusted applet (previously signed with javakey and
packet into .Jar archive). It seems to work with appletviewer, but it
doesn't under Netscape 4.01.
How is it possible?
Question by:della030797
  • 4
  • 2

Accepted Solution

mann061997 earned 0 total points
ID: 1222319
- you need a certificate from a CA; for testing get VeriSign's
  free test certificate
- install the certificate in Communicator
- create the signed JAR using Netscapes JAR Packager; as far
  as I know, signed JARs created using the JDK jar tool are not
  accepted by Communicator.


Expert Comment

ID: 1222320
Are Jar files usable in Netscape 3.01

Expert Comment

ID: 1222321
No, Communicator (Navigator 4) is the first version to
support this.

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Author Comment

ID: 1222322
How can I obtain a certificate from a CA? And VeriSign?
Netsape Jar Packager is a plug-in I've to download or built-in?

Expert Comment

ID: 1222323
Della - take a look at
for more information on Netscapes JAR tools. These are
a standalone executable and a Java executable - no plug-in.

The page also points you to sites of CAs offering object-
signing certificates.

Author Comment

ID: 1222324
Thanks for help, but I'm still in deep trouble...
After having packed my .class file into Jar (with Netscape's JAR Packager) and signed it, Netscape doesn't allow applet which now should be trusted to access system resource on local machine.
I don't know if I missed something in signing procedure or if I have to make some calls to IFC (i.e. PrivilegeManager.enablePrivilege("UniversalPropertyRead");
and in this case, how can I compile this Java source code since I actually have only JDK1.1.2 and Visual J++ 1.1?

Expert Comment

ID: 1222325
You need to register the certificate in the Browser:
  Options\Security Preferences\Site Certificates


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