Error running sample program
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Posted By:   Anne_G
Posted On:   Saturday, August 21, 2004 06:28 AM

Hi, I am using openORB 1.3.0 and JDK 1.4.2 to run a sample program given on Sun's Java website. The same code is running on a friend's computer but throws an error on my computer. Also, if I replace the naming service code and use Stringified object references, it works perfectly ok. As a naming service, I am using orbd and specify the InitialPort and InitialHost while initialising it and give the same parameters in command line arguments for the server. Can anyone think of a reason why this is not working and what could be changed to possibly make it work? I am pasting the code and the run-time error. The code compiles ok. Thanks for any help anybody can offer    More>>

Hi,



I am using openORB 1.3.0 and JDK 1.4.2 to run a sample program given on Sun's Java website. The same code is running on a friend's computer but throws an error on my computer. Also, if I replace the naming service code and use Stringified object references, it works perfectly ok. As a naming service, I am using orbd and specify the InitialPort and InitialHost while initialising it and give the same parameters in command line arguments for the server.



Can anyone think of a reason why this is not working and what could be changed to possibly make it work?



I am pasting the code and the run-time error. The code compiles ok.



Thanks for any help anybody can offer



			
import org.omg.CORBA.*;
import org.omg.CosNaming.*;
import org.omg.CosNaming.NamingContext;
import org.omg.CosNaming.NamingContextHelper;

import HelloApp.HelloCallback;
import HelloApp.*;

class HelloServant extends _HelloImplBase {
public String sayHello(HelloCallback callobj, String msg) {
callobj.callback(msg);
return "
Hello world !!
";
}
}

public class server {
public static void main(String args[]) {
try {
// create and initialize the ORB
ORB orb = ORB.init(args, null);
// create servant and register it with the ORB
HelloServant helloRef = new HelloServant();
orb.connect(helloRef);
// get the root naming context
org.omg.CORBA.Object objRef = orb
.resolve_initial_references("NameService");
NamingContext ncRef = NamingContextHelper.narrow(objRef);
// bind the Object Reference in Naming
NameComponent nc = new NameComponent("Hello", "");
NameComponent path[] = { nc };
ncRef.rebind(path, helloRef);
// wait for invocations from clients
java.lang.Object sync = new java.lang.Object();
synchronized (sync) {
sync.wait();
}
} catch (Exception e) {
System.err.println("ERROR: " + e);
e.printStackTrace(System.out);
}
}

}



ERROR: org.omg.CORBA.INITIALIZE: can't instantiate default ORB implementation org.openorb.CORBA.ORB vmcid: 0x0 minor code: 0 completed: No


org.omg.CORBA.INITIALIZE: can't instantiate default ORB implementation org.openorb.CORBA.ORB vmcid: 0x0 minor code: 0 completed: No

at org.omg.CORBA.ORB.create_impl(ORB.java:297)

at org.omg.CORBA.ORB.init(ORB.java:336)

at server.main(server.java:21)



Caused by: java.lang.ClassNotFoundException: org.openorb.CORBA.ORB


at java.net.URLClassLoader$1.run(URLClassLoader.java:199)


at java.security.AccessController.doPrivileged(Native Method)


at java.net.URLClassLoader.findClass(URLClassLoader.java:187)


at java.lang.ClassLoader.loadClass(ClassLoader.java:289)


at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)


at java.lang.ClassLoader.loadClass(ClassLoader.java:235)


at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)


at java.lang.Class.forName0(Native Method)


at java.lang.Class.forName(Class.java:219)


at org.omg.CORBA.ORB.create_impl(ORB.java:295)


... 2 more

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Re: Error running sample program

Posted By:   Anonymous  
Posted On:   Thursday, October 21, 2004 02:51 PM

Compare your classpath with the one on your friend's computer that works.
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