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java.lang.NullPointerException: 	at com.simpleprogrammer.User.setProteinData(User.java:44)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)	at java.lang.reflect.Method.invoke(Unknown Source)	at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:65)	at org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropertyValues(AbstractEntityTuplizer.java:710)	at org.hibernate.tuple.entity.PojoEntityTuplizer.setPropertyValues(PojoEntityTuplizer.java:371)	at org.hibernate.persister.entity.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:4509)	at org.hibernate.engine.internal.TwoPhaseLoad.doInitializeEntity(TwoPhaseLoad.java:186)	at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:137)	at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:1108)	at org.hibernate.loader.Loader.processResultSet(Loader.java:964)	at org.hibernate.loader.Loader.doQuery(Loader.java:911)	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:342)	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:312)	at org.hibernate.loader.Loader.loadEntity(Loader.java:2121)	at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:82)	at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:72)	at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3927)	at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:460)	at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:429)	at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:206)	at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:145)	at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1092)	at org.hibernate.internal.SessionImpl.immediateLoad(SessionImpl.java:1007)	at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:173)	at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:285)	at org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer.invoke(JavassistLazyInitializer.java:185)	at com.simpleprogrammer.User_$$_javassist_0.getName(User_$$_javassist_0.java)	at com.pluralsight.Introduction_To_Hibernate_Pluralsight.Program.main(Program.java:45)