My problem.
   I created a keystore
   I create signed jar file for my classes.
   I gave permission to that codebase for local file access ans saved in 
.java.policy file under user.home directory.
  
    If I run through AppletViewer it is accessing the local files.

    If I try using IExplorer 5.5 or Commnuicator 4.7 security exception 
raised.

Help me to solve the problem.