// 廠商實現的PersistenceManagerFactory
import com.solarmetric.kodo.impl.jdbc.JDBCPersistenceManagerFactory;
import javax.jdo.PersistenceManager;
import javax.jdo.Transaction;
public class SeedDatabase {
            public static void main(String[] args) {
// 創建一個vehicles的fleet...
            Fleet fleet = new Fleet();
            fleet.addVehicle(new Bicycle("Schwinn"));
            fleet.addVehicle(new Bicycle("Giant"));
            fleet.addVehicle(new MotorVehicle(4, new Engine(8)));
            fleet.addVehicle(new MotorVehicle(2, new Engine(4)));
            fleet.addVehicle(new MotorVehicle(4, new Engine(4)));
    
// 獲得的一個PersistenceManager...
	PersistenceManager pm = new JDBCPersistenceManagerFactory().getPersistenceManager();
// 開始一個transaction...
	Transaction transaction = pm.currentTransaction();
	transaction.begin();
// 存儲 fleet...
	pm.makePersistent(fleet);
// 提交transaction...
	transaction.commit();
// 關閉 manager...
	pm.close();
        }
    }