System Property Reading in java Applet

Question

I am getting following error during reading of System.getProperties();
java.lang.reflect.InvocationTargetException
     at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
     at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
     at java.lang.reflect.Constructor.newInstance(Unknown Source)
     at Simple.start(Simple.java:28)
     at sun.applet.AppletPanel.run(Unknown Source)
     at java.lang.Thread.run(Unknown Source)
Caused by: java.security.AccessControlException: access denied (java.util.PropertyPermission * read,write)
     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.checkPropertiesAccess(Unknown Source)
     at java.lang.System.getProperties(Unknown Source)
     at webl.util.FileLocator.LoadDirs(FileLocator.java:78)
     at webl.util.FileLocator.FindFile(FileLocator.java:13)
     at webl.util.FileLocator.Find(FileLocator.java:31)
     at webl.lang.Machine.<init>(Machine.java:27)
     ... 7 more

Answer 1

My two cents: We have the same SecurityExceptions when JAXP is doing a System.getProperty on java.home property, which applet specification forbids. So we think JAXP is meant to be run in a servlet, rather an in an applet (unless Sun could correct us on that). Those property reads would need to be removed if they were to run in an applet.
You might want to check out other SOAP clients, for example, SOAPRMI. A beta version is at:
http://www.extreme.indiana.edu/soap/#download