swing

Exception in thread "AWT-EventQueue-0" javax.persistence.PersistenceException: No Persistence provider for EntityManager named null

    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:)

    at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:)

    at com.hs.selenium.MainFrame.initComponents(MainFrame.java:)

    at com.hs.selenium.MainFrame.<init>(MainFrame.java:)

    at com.hs.selenium.MainFrame$.run(MainFrame.java:)

    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:)

    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:)

    at java.awt.EventQueue.access$(EventQueue.java:)

    at java.awt.EventQueue$.run(EventQueue.java:)

    at java.awt.EventQueue$.run(EventQueue.java:)

    at java.security.AccessController.doPrivileged(Native Method)

    at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:)

    at java.awt.EventQueue.dispatchEvent(EventQueue.java:)

    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:)

    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:)

    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:)

    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:)

    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:)

    at java.awt.EventDispatchThread.run(EventDispatchThread.java:)

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