> >To: support@xxxxxxxxxxxxxxxx
> >From: "John R. Cary" <cary@xxxxxxxxxx>
> >Subject: NetCDF Java Applet Capable?
> >Organization:
> >Keywords: 200007181820.e6IIKsT11192
>
> I have been trying to use the NetCDF package within an applet through
> Netscape .4.7 on Windows. I have enable UniversalFileAccess, but
> the code still dies. My code sample is:
>
> try { // This must be in the same block?
> netscape.security.PrivilegeManager.enablePrivilege(
> "UniversalFileAccess");
> appendLine("Netscape privileges obtained.");
> }
> catch (NoClassDefFoundError ex){appendLine("NoClassDefFoundError");}
> catch (Exception ex){appendLine("Exception");}
> appendLine("Will save to file " + fileName + " in directory " +
> sliceDir + ".");
> File netCdfFile = new File(sliceDir, fileName);
> appendLine("File '" + fileName + "' created.");
> nc = new NetcdfFile(netCdfFile,
> true, // clobber an existing file
> true, // prefill variable values
> schema // metadata template
> );
> appendLine("NetCDF file '" + fileName + "' created.");
>
> The code dies upon the call to NetcdfFile. The error says only
> "AppletSecurityException".
>
> Is Java NetCDF applet capable within Netscape?
>
> Thanks.....John Cary
>
> --
> cary@xxxxxxxxxx John R. Cary www.techxhome.com
> Tech-X Corporation ph. (303) 448-0728
> 5541 Central Avenue, Suite 135 fax (303) 448-7756
> Boulder, CO 80301 cell (303) 356-5399
Hi John:
Im not an expert on this, but I have been investigated applets recently.
One thing Im pretty sure of is that you have to sign your applets before
they can escape from the applet security sandbox.
check out:
http://java.sun.com/sfaq/
http://java.sun.com/security/signExample12/
http://java.sun.com/security/index.html
We are currently exploring a new technology called WebStart that looks
promising:
http://java.sun.com/products/javawebstart/
