FAQ-0483 Why does System.getProperty in an applet always cause an AppletSecurityException?


FAQ-0483 Why does System.getProperty in an applet always cause an AppletSecurityException?

» Symbian OS » Developer Knowledgebase » FAQ-0483

Classification:	Java	Category:	Applet
Created:	04/11/2000	Modified:	08/24/2001
Number:	FAQ-0483
Platform:	ER5

Question:
Calling System.getProperty in an applet running in the web browser causes an AppletSecurityException regardless of which property is requested. Yet the Sun JDK Docs say that only java.home, java.class.path, user.name, user.home & user.dir are protected.

Answer:
This is a known defect of the ER5 Runtime for Java. It has been fixed for the next EPOC Java release.
Note added 10/1/2000: This appears still to be broken in v6.0 of the Symbian platform. It is currently under investigation.

The work around for ER5 follows:

Unzipping the following zip into the /classes folder or patching it into classes.zip, overwriting the existing copy of EikEmbeddedFrame.class, will allow you to access from unsigned applets the system properties you should. This patch works equally well on the emulator and on ER5-based devices.