OK, thanks. But, now the original problem appears again
SAX Parser class ---> org.apache.xerces.jaxp.SAXParserFactoryImpl
javax.persistence.PersistenceException: Explicit persistence provider
error(s) occurred for "event" after trying the following discovered
implementations: org.apache.openjpa.persistence.PersistenceProviderImpl from
provider: org.apache.openjpa.persistence.PersistenceProviderImpl
at
javax.persistence.Persistence.createPersistenceException(Persistence.java:244)
at
javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:186)
at com.hp.p4000.db.DbConnect.main(DbConnect.java:31)
Caused by: <openjpa-2.1.1-r422266:1148538 nonfatal general error>
org.apache.openjpa.util.GeneralException:
org.xml.sax.SAXNotRecognizedException:
http://java.sun.com/xml/jaxp/properties/schemaLanguage
at
org.apache.openjpa.lib.meta.XMLMetaDataParser.parseNewResource(XMLMetaDataParser.java:396)
at
org.apache.openjpa.lib.meta.XMLMetaDataParser.parse(XMLMetaDataParser.java:334)
at
org.apache.openjpa.lib.meta.XMLMetaDataParser.parse(XMLMetaDataParser.java:311)
at
org.apache.openjpa.lib.meta.XMLMetaDataParser.parse(XMLMetaDataParser.java:284)
at
org.apache.openjpa.persistence.PersistenceProductDerivation$ConfigurationParser.parse(PersistenceProductDerivation.java:775)
at
org.apache.openjpa.persistence.PersistenceProductDerivation.parseResources(PersistenceProductDerivation.java:559)
at
org.apache.openjpa.persistence.PersistenceProductDerivation.load(PersistenceProductDerivation.java:525)
at
org.apache.openjpa.persistence.PersistenceProductDerivation.load(PersistenceProductDerivation.java:339)
at
org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:90)
at
org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:157)
at
org.apache.openjpa.persistence.PersistenceProviderImpl.createEntityManagerFactory(PersistenceProviderImpl.java:66)
at
javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:152)
... 1 more
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