JPA with TopLink: No META-INF/persistence.xml was found in classpath

Question

public class LoginTest {

public static void main(String[] args) {
    EntityManagerFactory emf = Persistence.createEntityManagerFactory(\"IRCBotPU\");
    EntityMan         


        

Answer 1

Your META-INF/persistence.xml file should look something like this:

// 
//   
//     oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider
//     
//     entity.Customer
//     entity.Order
//     entity.Item
//     
//       
//       
//       
//       
//       
//       
//       
//     
//   
// 

Your persistence-unit's name attribute in your persistence.xml doesn't match the value you're passing into the Persistence.createEntityManagerFactory method. Make sure that your persistence-unit name is set to "IRCBotPU".