Java Access Provider

Hi,

I am trying to access from java. I added jar files to libraries. I am getting null pointer exception. What is the problem? 

package javaapplication1;

import ifs.fnd.ap.*;

public class JavaApplication1 {
    public static void main(String[] args) {
        try {
            Server srv = new Server();
            srv.setConnectionString("jdbc:oracle:thin:@//192.168.x.xxx.1521/TEST");
            srv.setCredentials("ifsapp", "******");
            System.out.println();
            PlsqlSelectCommand selCmd = new PlsqlSelectCommand(srv, "SELECT IDENTITY, DESCRIPTION FROM FND_USER");
            RecordCollection result = selCmd.executeQuery();
            System.out.println("All users:");
            if (result != null && result.size() > 0) {
                RecordIterator itr = result.recordIterator();
                Record next;
                while (itr.hasNext()) {
                    next = itr.nextRecord();
                    System.out.println("  " + next.findValue("IDENTITY") + "\t" + next.findValue("DESCRIPTION"));
                }
            } else {
                System.out.println("No rows selected");
            }
        } catch (Exception err) {
            err.printStackTrace(System.out);
        }
    }
}