I am a JPA starter and am getting below error while running simple JPA example,could some able to help out ?
log4j:WARN No appenders could be found for logger (org.hibernate.cfg.annotations.Version).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" java.lang.AbstractMethodError: org.slf4j.impl.Log4jLoggerAdapter.trace(Ljava/lang/String;Ljava/lang/Object;)V
at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:313)
at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:56)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:83)
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:60)
at JPASetFirstResult.main(JPASetFirstResult.java:53)
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