hibernate OneToOne PrimaryKeyJoinColumn gives ClassCastException while saving the object

Question

java.lang.ClassCastException: org.hibernate.type.SerializableType incompatible with org.hibernate.type.EntityType at org.hibernate.id.ForeignGenerator.generate(ForeignGenerator.java:74) at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:122) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210) at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:56) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195) at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:50) at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93) at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:562) at org.hibernate.impl.SessionImpl.save(SessionImpl.java:550) at org.hibernate.impl.SessionImpl.save(SessionImpl.java:546) at org.springframework.orm.hibernate3.HibernateTemplate$12.doInHibernate(HibernateTemplate.java:642) at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:373) at org.springframework.orm.hibernate3.HibernateTemplate.save(HibernateTemplate.java:639) at schedule.DaoClass.createNewObject(DaoClass.java:49) at schedule.DaoClass.main(DaoClass.java:25)