Connector MXJ Strange Error Question?

Hi,

I am new to Connector/MXJ. Recently I have downloaded "Connector/MXJ
5.0.9" and "Connetor/J 5.1.6". I am trying to build/test a simple
system tray application from which I can start or shutdown the mysql
database. I am following MySQL 5.1 documentation on MXJ and so far I
was able to run the "ConnectorMXJObjectTestExample.java".

Based on this I created the separate class (called DButils) where I
put the routines to start and stop the database like this:
=====================================

public void InitializeAndStartDatabase() throws Exception {
        File dbEngineDir = new File ("E:/MXJTest");
        int dbPort = Integer.parseInt(
                System.getProperty("My_DB_Port","3336"));
        String userName = "hello";
        String password = "hello";

        mysqldResource = StartDatabase(dbEngineDir, dbPort,
                userName, password);
}

    public MysqldResource StartDatabase(File databaseDir, int port,
            String userName, String password) {
        MysqldResource mysqldResource = new MysqldResource(databaseDir);

        Map database_options = new HashMap();
        database_options.put(MysqldResourceI.PORT, Integer.toString(port));
        database_options.put(MysqldResourceI.INITIALIZE_USER, "true");
        database_options.put(MysqldResourceI.INITIALIZE_USER_NAME, userName);
        database_options.put(MysqldResourceI.INITIALIZE_PASSWORD, password);

        mysqldResource.start("test-mysqld-thread", database_options);

        if (!mysqldResource.isRunning()) {
            throw new RuntimeException("MySQL did not start.");
        }

        return mysqldResource;
    }

    public void ShutDownDatabase() {
        try {
            mysqldResource.shutdown();
        }
        catch (Exception shtex) {
            shtex.printStackTrace();
        }
    }

====================================

In my main class I have created and initialized the DButils variables

DButils dbUtils = new DButils();

My main app runs as system tray application where I have two three
menu items and action listeners for that. Like this:

=======================================

           ActionListener exitListener = new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    System.exit(0);
                }
            };


            ActionListener stopDBListener = new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    try {
                        dbUtils.ShutDownDatabase();
                        JOptionPane optPane = new JOptionPane();
                        optPane.showMessageDialog(null,
                                "Database Successfully Stopped");
                    }
                    catch (Exception dbex) {
                        dbex.printStackTrace();
                    }
                }
            };


            ActionListener startDBListener = new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    try {
                        dbUtils.InitializeAndStartDatabase();
                        JOptionPane optPane = new JOptionPane();
                        optPane.showMessageDialog(null,
                                "Movie Database Successfully Started");
                            }
                    catch (Exception dbex) {
                        dbex.printStackTrace();
                    }
                }
            };

=======================================

My system tray application works perfectly but when I click the menu
item to start the database, it starts the database but soon after (1
sec), following Error occurs:

[NOTE: I am using Netbeans 5.5 the following is the output I copied]

=======================================
init:
deps-jar:
compile:
run:
[E:\MXJTest\bin\mysqld-nt.exe][--no-defaults][--console][--port=3336][--socket=mysql.sock][--basedir=E:\MXJTest][--datadir=E:\MXJTest\data][--pid-file=E:\MXJTest\data\MysqldResource.pid]
[MysqldResource] launching mysqld (test-mysqld-thread)
InnoDB: The first specified data file .\ibdata1 did not exist:
InnoDB: a new database to be created!
080331 18:29:10  InnoDB: Setting file .\ibdata1 size to 10 MB
InnoDB: Database physically writes the file full: wait...
080331 18:29:11  InnoDB: Log file .\ib_logfile0 did not exist: new to be created
InnoDB: Setting log file .\ib_logfile0 size to 5 MB
InnoDB: Database physically writes the file full: wait...
080331 18:29:11  InnoDB: Log file .\ib_logfile1 did not exist: new to be created
InnoDB: Setting log file .\ib_logfile1 size to 5 MB
InnoDB: Database physically writes the file full: wait...
InnoDB: Doublewrite buffer not found: creating new
InnoDB: Doublewrite buffer created
InnoDB: Creating foreign key constraint system tables
InnoDB: Foreign key constraint system tables created
080331 18:29:12  InnoDB: Started; log sequence number 0 0
080331 18:29:12 [Note] E:\MXJTest\bin\mysqld-nt.exe: ready for connections.
Version: '5.0.51a-community-nt'  socket: ''  port: 3336MySQL Community
Edition (GPL)
[MysqldResource] mysqld running as process: 3624

Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError:
com.mysql.jdbc.Driver
        at com.mysql.management.MysqldResource.canConnectToServer(MysqldResource.java:236)
        at com.mysql.management.MysqldResource.start(MysqldResource.java:221)
        at com.mysql.management.MysqldResource.start(MysqldResource.java:166)

============================================

After this my Shutdown Databse function doesn't work and I have to
manually end the Mysql process form Task Manager (I am using windows).

My Question is:

1) What is this error? Is this Connector/MXJ Specific Error or something else?
2) What is the probable cause of this error? why I am getting this
error while the example that comes with Connector/MXJ is running
perfectly?

Can somebody guide me on this?

Thanks

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