Re: help! rmi server constructor throws ExceptionInInitializerError ?? is this an rmi bug ??

I've been told that my original message likely didn't make it to the list --
I was joining and posting at the same time, so -- here it is again.

(Our usage of these classes is used to launch code already existant on the
target machine -- no dynamic class loading needed)

Allen Joslin wrote:

> I hope that someone can help me with this.  I really have no idea what is
> failing -- I'm starting to suspect my java installation as the problem appears
> to be within the rmi support structure...
>
>
> I am bringing long working code forward from: java version "1.2.2" Classic VM
> (build Linux_JDK_1.2.2_RC4, native threads, sunwjit) to: java version "1.4.2"
> gcj (GCC) 3.4.3 20041212 (Red Hat 3.4.3-9.EL4) -- and it's failing in the
> place where I start the rmi server code.  (the registery starts fine.)
>
> the full_open_policy referenced in the launch is a standard AllPermissions
> file, also long running...
>
> When I launch the JobListenerImpl (java -Djava.rmi.server.disableHttp=true -
> Djava.rmi.server.codebase=file:///apps/common/com/RMI/ -
> Djava.security.policy=full_open_policy JobListenerImpl &) the main routine
> (public static void main) adds the SecurityManager
> (System.setSecurityManager(new RMISecurityManager())) successfully -- and then
> the call to the JobListenerImpl constructor fails with a "Operation not
> allowed" exception message, followed closely by a "Exception in thread "main"
> java.lang.ExceptionInInitializerError *** Got java.lang.NoClassDefFoundError:
> gnu.gcj.runtime.NameFinder while trying to print stack trace." message when I
> try to print the exception stack trace.
>
> My code is appended, here are the loglines I print:
>
> log: java -Djava.rmi.server.disableHttp=true
> -Djava.rmi.server.codebase=file:///apps/common/ com/RMI/
> -Djava.security.policy=full_open_policy JobListenerImpl test nwot-m01
> 192.168.20.190 1099 &
>
> log: public static void
> main(['test','nwot-m01.printingforsystems.com','192.168.20.190','1099'])
>
> log: System.setSecurityManager(new RMISecurityManager());
>
> At this point I get the exception:
>
> exception: Operation not allowed
>     cause: null
>
> Exception in thread "main" java.lang.ExceptionInInitializerError
> *** Got java.lang.NoClassDefFoundError: gnu.gcj.runtime.NameFinder while
> trying to print stack trace.
>
>
> Here's the relevant code:
>
> public static void main(String args[]) {
>
>  String nwoRoot = args[0];
>  String machineName = args[1];
>  String address = args[2];
>  String port = args[3];
>
>  System.out.println("");
>
>  System.out.println(" log: public static void
>                       main(['"+args[0]+"','"+args[1]+"','"+args[2]
>                            +"','"+args[3]+"'])");
>
> // Create and install a security manager
> if (System.getSecurityManager() == null) {
>
>  System.setSecurityManager(new RMISecurityManager());
>  System.out.println(" log: System.setSecurityManager(new
>                                    RMISecurityManager());");
> }
>
> try {
>
>   JobListenerImpl obj = new JobListenerImpl(nwoRoot,machineName,address,port);
>
>   System.out.println(" log: JobListenerImpl obj = new
>                          JobListenerImpl(args[0],args[1],args[2],args[3]);");
>
>   String binder = "//"+ address +":"+ port +"/JobListener";
>
>   Naming.rebind(binder, obj);
>
>   System.out.println(" log: Naming.rebind('"+binder+"', obj);");
>
>  } catch (Exception e) {
>   System.out.println(" exception: "+ e.getMessage());
>   System.out.println("     cause: "+ e.getCause());
>   e.printStackTrace();
>  }
> }
>
> //-------------------------------------------------------------------------
>
> public JobListenerImpl ( String nr, String mn, String ad, String po )
>                                                  throws RemoteException
> {
>
>   super();
>
>   System.out.println(" log:
>   JobListenerImpl('"+nr+"','"+mn+"','"+ad+"','"+po+"')");
>
>   nwoRoot = nr;
>   machineName = mn;
>   address = ad;
>   port = po;
> }
>

Peter Jones - JavaSoft East wrote:

> I don't think that your original message, which you seem to have
> excerpted below, actually made it to this list.  If you (re?)post the
> complete stack trace of the ExceptionInInitializerError, along with
> other relevant information like JDK version, full command lines, etc.,
> we might be able to diagnose the problem.
>
> Without knowing any of the above, I would guess that some application
> class is attempting some operation in its static initializer that
> requires a permission, but your security policy is not granting it
> that permission-- thus, the static initializer fails with a
> SecurityException when there is a security manager, which the VM wraps
> in an ExceptionInInitializerError when it propagates outside the
> initializer.
>
> As far as whether you should care if there is a security manager-- you
> should care if there is a possibility of untrusted code running in the
> virtual machine, or if you intend to dynamically load classes through
> RMI, which is disabled if there is no security manager set.
>
> -- Peter
>
>
> Quoting al joslin <[email protected]>:
>> Hello all,
>>
>>     the plot thickens (or thins, depending on your perspective)
>>
>>     I can now get the server to instantiate -- by commenting out the call to
>> load the RMISecurityManager
>>
>>     What does this mean?
>>
>>     Should I care?
>>
>>     Certainly my RMI is working now, and it's between machines behind
>> firewalls, and I can use encrypted parms if I want to be safer...
>>
>> Al;
>>
>>
>>> // Create and install a security manager
>>> if (System.getSecurityManager() == null) {
>>>
>>>  System.setSecurityManager(new RMISecurityManager());
>>>  System.out.println(" log: System.setSecurityManager(new
>>> RMISecurityManager());");
>>> }
>
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To unsubscribe, send email to [email protected] and include in the body
of the message "signoff RMI-USERS".  For general help, send email to
[email protected] and include in the body of the message "help".

For a list of frequently asked RMI questions please refer to:
http://java.sun.com/j2se/1.3/docs/guide/rmi/faq.html

To view past RMI-USERS postings, please see:
http://archives.java.sun.com/archives/rmi-users.html