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Author Topic: Errors in running Hello World  (Read 4575 times)

Abhilash K

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Errors in running Hello World
« on: December 08, 2006, 12:30:04 PM »


       I have created a hello world program.  I used the code given in the programming help page.  Created a HelloWorld class and HelloTask class.  The driver and nodes are started properly after that it is saying the error as follows.  i am putting my code for HelloWorld as follows

package test.hello;

import java.util.*;
import org.apache.log4j.Logger;
import org.jppf.JPPFException;
import org.jppf.client.JPPFClient;
import org.jppf.server.JPPFStats;
import org.jppf.server.protocol.JPPFTask;
import org.jppf.utils.*;
public class HelloWorld
   static Logger log = Logger.getLogger(HelloWorld.class);
   private static JPPFClient jppfClient = null;

   public static void main(String args[])
      JPPFClient client=new JPPFClient();
      List<JPPFTask> tasks = new ArrayList<JPPFTask>();
      tasks.add(new HelloTask());
      try {
         // execute tasks
         List<JPPFTask> results = client.submit(tasks, null);
         JPPFStats stats = client.requestStatistics();
         System.out.println("End statistics :\n"+stats.toString());
      } catch (Exception e) {
} is as follows.

package test.hello;

import org.jppf.server.protocol.JPPFTask;

public class HelloTask extends JPPFTask {
   public void run() {
      setResult("Hello World");
my errors are as follows.

     [echo] Starting the JPPF driver for MyApp

     [echo] Starting local node for MyApp

     [echo] Starting the server monitoring GUI for MyApp

     [echo] starting the 'Hellow World Application'
     [java] java.lang.NoClassDefFoundError: test/hello/HelloWorld
     [java] Exception in thread "main"
     [java] Java Result: 1
     [java] JPPFClassLoader.init(): attempting connection to the class server
     [java] JPPFClassLoader.init(): Reconnected to the class server
     [java] PeerNode.init(): Attempting connection to the JPPF driver
     [java] PeerNode.init(): Reconnected to the JPPF driver
     [java] Dec 8, 2006 4:45:26 PM java.util.prefs.WindowsPreferences <init>
     [java] WARNING: Could not open/create prefs root node Software\JavaSoft\Pre
fs at root 0x80000002. Windows RegCreateKeyEx(...) returned error code 5.
     [java] ClassServerDelegate.init(): Attempting connection to the class serve
     [java] ClassServerDelegate.init(): Reconnected to the class server
     [java] JPPFClient.init(): Attempting connection to the JPPF driver
     [java] JPPFClient.init(): Reconnected to the JPPF driver

pls help me.  Its very urgent.



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Errors in running Hello World
« Reply #1 on: December 08, 2006, 10:35:22 PM »


Can you please post the jppf-client.log file?
You are running the UI under Windows, is this correct?
Can you also check if you have the privileges to modify the registry, under the key: HKEY_CURRENT_USER\Software\JavaSoft\Prefs?

Thanks for your time,

Abhilash K

  • JPPF Grand Master
  • ****
  • Posts: 64
Re: Thanks
« Reply #2 on: December 09, 2006, 05:13:27 AM »


        Thanks for your reply.  I think its my privilege problem.  How can I overcome that?  Should i need to sent anything in the policy file?  The error is corrected now.  Now the program is running, sorry that its a fault from my side.  

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