JFileChooser in bean - generates exception

Hi all
I am developing a very simple Java bean for opening files. It has a button that will invoke a JFileChooser. When I add it to the SUN ONE Studio component palette it generates the following exception:
java.security.AccessControlException
This happens when in the default constructor, I initialise the JFileChooser field using new JFileChooser(). Without this call, the addition to the palette works OK. The AccessControlException indicates that write permission to the default user directory is required and not granted! Can anyone explain this, and provide a work-around?
Thanks
John

users will not be allowed to choose files from the server.
they may not even have "browse" rights which is why you
can't "choose files".Why should that matter at the development stage? And I have write access to the relevant directory anyway!
John

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return ""+ new java.util.Date();
I try to access it from a client running on the same machine(windows nt).
DateEJBClient dateEJBClient = new DateEJBClient();
try
Context context = getInitialContext();
DateEJBHome dateEJBHome = (DateEJBHome)PortableRemoteObject.narrow(context.lookup("DateEJB"), DateEJBHome.class);
DateEJB dateEJB;
// Use one of the create() methods below to create a new instance
dateEJB = dateEJBHome.create();
// Call any of the Remote methods below to access the EJB
System.out.println("Date & Time >>> "+dateEJB.getCurrentTime());
catch(Throwable ex)
Any idea why I get this error?
com.evermind.server.rmi.OrionRemoteException: jazn.com/admin is not allowed to call this EJB method, check your security settings (method-permission in ejb-jar.xml and security-role-mapping in orion-application.xml).
at DateEJBHome_StatelessSessionHomeWrapper3.create(DateEJBHome_StatelessSessionHomeWrapper3.java:40)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:124)
at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:48)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)
at java.lang.Thread.run(Thread.java:534)
at connection to localhost/127.0.0.1 as admin
at DateEJBHome_StatelessSessionHomeWrapper3.create(DateEJBHome_StatelessSessionHomeWrapper3.java:40)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:124)
at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:48)
at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)
at java.lang.Thread.run(Thread.java:534)
Process exited with exit code 0.

I beleive you need the POI jar file in the <ias_home>/j2ee//home/applib directory or in your app severs PATH.

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I must be missing something, but just can't see what. I'm creating a new assembly with .net 4.5.2 and I've enabled code contracts by going to the project properties and by doing the following:
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* chose option full on the combo
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