RMI classloading mechanism:unable to bind an object

Question

hai all,
I am facing a problem when i use rmi classloading mechanism.
I am using suns ClassFileServer to load classes dynamiclly into my server and client.
In my server i want to load the class and and get a static object of the same class and bind it to registry so that clents can access it.
but i am unable to do that.
I have a doubt regarding what happens to the static variables when class loading is done.

Answer 1

I am posting my validateImpl and DynamicServer here .please look into it
validateImpl.java:
import java.io.FileInputStream;
import java.io.PrintStream;
import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.server.UnicastRemoteObject;
import java.util.*;
public class validateImpl extends UnicastRemoteObject
implements validate
public static validateImpl getInstance()
return validateInst;
public validateImpl()
throws RemoteException
System.out.println("Inside validateimpl constructor");
try
Naming.rebind(new String("myserverObj"), this);
catch(Exception exception)
System.out.println("Exception occurred: " + exception);
public boolean validateUser(String s, String s1)
System.out.println("user name"+s);
String s2 = propFile.getProperty(s);
System.out.println("from records /t"+s2);
if(s2 == null)
String s3 = " User Name: " + s + " is Not Configured \n";
System.out.println("username not found");
StringTokenizer stringtokenizer = new StringTokenizer(s2, "~");
PFusername = (String)stringtokenizer.nextElement();
PFpassword = (String)stringtokenizer.nextElement();
return PFusername.equals(s) && PFpassword.equals(s1);
private static Hashtable cache;
private static String PFusername;
private static String PFpassword;
private static Properties propFile;
private static validateImpl validateInst;
static
propFile = new Properties();
try
     System.out.println("In Static Block");
validateInst = new validateImpl();
propFile.load(new FileInputStream("usersandpasswords.properties"));
catch(Exception exception)
System.out.println("Exception in creating an instance" + exception);
DynamicServer.java
import java.rmi.Naming;
import java.rmi.Remote;
import java.rmi.RMISecurityManager;
import java.rmi.server.RMIClassLoader;
import java.util.Properties;
public class DynamicServer {
public static void main(String args[]) {
// Create and install a security manager
if (System.getSecurityManager() == null) {
System.setSecurityManager(new RMISecurityManager());
try {
Properties p = System.getProperties();
String url = p.getProperty("java.rmi.server.codebase");
Class serverclass = RMIClassLoader.loadClass(url, "validateImpl");
Naming.rebind("/myserverObj", (Remote)serverclass.newInstance());
/*here is the problem.instead of creating a newInstance i want to bind thevalidateinstance in validateImpl class to be bound to the registry.
but how can i access it.*/
System.out.println("HelloServer bound in registry");
} catch (Exception e) {
System.out.println(e);
}