how to connect mysql Database?

i am use to jdoconfig.xml file

<persistence-manager-factory name="mysqldbconnection">
<property name="javax.jdo.PersistenceManagerFactoryClass">
value="org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFactory"/>
<property name="javax.jdo.option.ConnectionDriverName" value="com.mysql.jdbc.Driver">
<property name="javax.jdo.option.ConnectionURL" value="jdbc:mysql://localhost:3306/testproject">
<property name="javax.jdo.option.ConnectionUserName" value="root">
<property name="javax.jdo.option.ConnectionPassword" value="admin">
<property name="javax.jdo.option.NontransactionalRead" value="true">
<property name="javax.jdo.option.NontransactionalWrite" value="true">
<property name="javax.jdo.option.RetainValues" value="true">
<property name="datanucleus.appengine.autoCreateDatastoreTxns" value="true">


demo.java file:

package june.testproject.client;
import javax.jdo.JDOHelper;
import javax.jdo.PersistenceManagerFactory;

import java.sql.Connection;



public class demo {

public static void main(String[] argv) {

System.out.println("-------- MySQL JDBC Connection Testing ------------");

try {

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

} catch (ClassNotFoundException e) {

System.out.println("Where is your MySQL JDBC Driver?");
e.printStackTrace();
return;

}

System.out.println("MySQL JDBC Driver Registered!");
Connection connection = null;

//connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/googleapps","root", "admin");
final PersistenceManagerFactory pmfInstance = JDOHelper.getPersistenceManagerFactory("mysqldbconnection");
connection=(Connection) pmfInstance;

if (connection != null) {
System.out.println("You made it, take control your database now!");
} else {
System.out.println("Failed to make connection!");
}
}
}

command prompt execute

java -cp D:\Arul\Googleeclipse\testproject\war\WEB-INF\lib\mysql-connector-java-3.1.12-bin.jar;D:\Arul\Googleeclipse\testproject\src\june\testproject\client demo


error occur

Exception in thread "main" java.lang.NoClassDefFoundError: demo
Caused by: java.lang.ClassNotFoundException: demo
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: demo. Program will exit.


please help me command prompt execute procedure.

thanks.