plz provide me any simple authentication code in ldap

[Bharath K <bharath.k.b.143@gmail.com>]

below is my code....by executing this i am getting as error as invalid credentials

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import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.
NamingEnumeration;
import javax.naming.NamingException;

public class SimpleBindDemo {

    public static void main(String[] args) throws NamingException {

        if (args.length < 2) {
            System.err.println("Usage: java SimpleBindDemo <userDN>
<password>");
            System.exit(1);
        }

        Hashtable env = new Hashtable();
        env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.ldap.LdapCtxFactory");

        env.put(Context.PROVIDER_URL, "ldap://localhost:389/");

        env.put(Context.SECURITY_AUTHENTICATION, "simple");
        //env.put(Context.SECURITY_PRINCIPAL,"cn=Manager,ou=People,dc=example,dc=com");
        //env.put(Context.SECURITY_CREDENTIALS,"ldap123");
        env.put(Context.SECURITY_PRINCIPAL,args[0]);
        env.put(Context.SECURITY_CREDENTIALS,args[1]);

        try {
            Context ctx = new InitialContext(env);
            NamingEnumeration enm = ctx.list("");

            while (enm.hasMore()) {
                System.out.println(enm.next());
            }

            enm.close();
            ctx.close();
        } catch (NamingException e) {
            System.out.println(e.getMessage());
        }
    }
}