[java] Problem with MySql and java under Windows

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

import com.mysql.management.driverlaunched.ServerLauncherSocketFactory;

public class ConnectorMXJTestExample {
    public static void main(String[] args) throws Exception {
        String hostColonPort = "localhost:3306";
        
        String driver = com.mysql.jdbc.Driver.class.getName();
        String url = "jdbc:mysql:/&#47;" + hostColonPort + "&#<span class="java-number">47</span>;"</span> + <span class="java-literal">"?"</span>
                + <span class="java-literal">"socketFactory="</span>
                + ServerLauncherSocketFactory.<span class="java-keyword">class</span>.getName();
        String userName = <span class="java-literal">"root"</span>;
        String password = <span class="java-literal">""</span>;

        <span class="java-keyword">Class</span>.forName(driver);
        Connection conn = <span class="java-keyword">null</span>;
        <span class="java-keyword">try</span> {
            conn = DriverManager.getConnection(url, userName, password);
            Statement stmt = conn.createStatement();
            ResultSet rs = stmt.executeQuery(<span class="java-literal">"SELECT VERSION()"</span>);
            rs.next();
            String version = rs.getString(<span class="java-number">1</span>);
            rs.close();
            stmt.close();

            System.out.println(<span class="java-literal">"------------------------"</span>);
            System.out.println(version);
            System.out.println(<span class="java-literal">"------------------------"</span>);
        } <span class="java-keyword">finally</span> {
            <span class="java-keyword">try</span> {
                conn.close();
            } <span class="java-keyword">catch</span> (Exception e) {
                e.printStackTrace();
            }
            ServerLauncherSocketFactory.shutdown(hostColonPort);
        }
    }
}

</pre></div><!--ENDSCRIPT-->
With the following compile statement and execute statement:

H:\MySQL\connector-mxj&gt;javac ConnectorMXJTestExample.java -cp H:\MySQL\jar\conne
ctor-mxj.jar;H:\MySQL\jar\mysql-connector-java-3.1.11-bin.jar

H:\MySQL\connector-mxj&gt;java ConnectorMXJTestExample -cp H:\MySQL\jar\connector-m
xj.jar;H:\MySQL\jar\mysql-connector-java-3.1.11-bin.jar

and get &#111;nly the following error

Exception in thread "main" java.lang.NoClassDefFoundError: ConnectorMXJTestExamp
le

The error seems to be caused by 

String driver = com.mysql.jdbc.Driver.class.getName()

But if i reduce the code to the following:

Class.forName("com.mysql.jdbc.Driver").newInstance(); 

I still get the same error.
can any body help me? Thanks a lot!</code></pre></div>