Order.java

@Entity
public class Order
{
    @Id String orderNumber;
    Date date;
    String customerName;
    String itemName;
    int quantity;
    double price;
}

package emtutorial.basic.step1;

import com.ibm.websphere.objectgrid.ObjectGrid;
import com.ibm.websphere.objectgrid.ObjectGridManagerFactory;
import com.ibm.websphere.objectgrid.Session;
import com.ibm.websphere.objectgrid.em.EntityManager;

public class Application
{

    static public void main(String [] args)
        throws Exception
    {
        ObjectGrid og = 
				ObjectGridManagerFactory.getObjectGridManager().createObjectGrid();
        og.registerEntities(new Class[] {Order.class});

        Session s = og.getSession();
        EntityManager em = s.getEntityManager();

        em.getTransaction().begin();

        Order o = new Order();
        o.customerName = "John Smith";
        o.date = new java.util.Date(System.currentTimeMillis());
        o.itemName = "Widget";
        o.orderNumber = "1";
        o.price = 99.99;
        o.quantity = 1;

        em.persist(o);
        em.getTransaction().commit();

        em.getTransaction().begin();
        o = (Order)em.find(Order.class, "1");
        System.out.println("Found order for customer: " + o.customerName);
        em.getTransaction().commit();
    }
}