Exception in thread "main" org.hibernate.PropertyAccessException: Null value was assigned to a property of primitive type setter of

I am getting the following ``` Hibernate: select employees0_.employee_id as employee1_0_0_, employees0_.commission_pct as commission2_0_0_, employees0_.department_id as department3_0_0_, employees0_.email as email0_0_, employees0_.first_name as first5_0_0_, employees0_.hire_date as hire6_0_0_, employees0_.job_id as job7_0_0_, employees0_.last_name as last8_0_0_, employees0_.manager_id as manager9_0_0_, employees0_.phone_number as phone10_0_0_, employees0_.salary as salary0_0_ from employees employees0_ where employees0_.employee_id=? 1566 [main] INFO org.hibernate.event.def.DefaultLoadEventListener - Error performing load command org.hibernate.PropertyAccessException: Null value was assigned to a property of primitive type setter of com.prateek.hibernate.employees.commission_pct at org.hibernate.property.DirectPropertyAccessor$DirectSetter.set(DirectPropertyAccessor.java:143) at org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropertyValues(AbstractEntityTuplizer.java:583) at org.hibernate.tuple.entity.PojoEntityTuplizer.setPropertyValues(PojoEntityTuplizer.java:229) at org.hibernate.persister.entity.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:3847) at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:152) at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:982) at org.hibernate.loader.Loader.doQuery(Loader.java:857) at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274) at org.hibernate.loader.Loader.loadEntity(Loader.java:2037) at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:86) at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:76) at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:3293) at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:496) at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:477) at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:227) at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:285) at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:152) at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:1090) at org.hibernate.impl.SessionImpl.get(SessionImpl.java:1005) at org.hibernate.impl.SessionImpl.get(SessionImpl.java:998) at com.prateek.hibernate.FirstHibernate.main(FirstHibernate.java:17) Caused by: java.lang.IllegalArgumentException: Can not set int field com.prateek.hibernate.employees.commission_pct to null value at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source) ``` How can I resolve this error? ``` package com.prateek.hibernate; import java.util.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.Lob; import javax.persistence.Temporal; import javax.persistence.TemporalType; import javax.persistence.Transient; @Entity public class employees { @Id @GeneratedValue(strategy=GenerationType.AUTO) private int employee_id; private String first_name; private String last_name; private String email; private String phone_number; @Temporal(TemporalType.DATE) private Date hire_date; private String job_id; private long salary; private int commission_pct; private int manager_id; private int department_id; //Setter and Getters } ``` Here is the main class ``` package com.prateek.hibernate; import java.util.List; import org.hibernate.Query; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; public class FirstHibernate { public static void main(String[] args) { SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory(); Session session = sessionFactory.openSession(); session.beginTransaction(); employees e = (employees) session.get(employees.class, 100); System.out.println("First Name :" + e.getFirst_name()+","+ "Last Name :"+ e.getLast_name()); session.getTransaction().commit(); session.close(); } } ``` Hibernate.cfg.xml: ``` <?xml version='1.0' encoding='utf-8'?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <property name="dialect">org.hibernate.dialect.Oracle10gDialect</property> <property name="connection.driver_class">oracle.jdbc.OracleDriver</property> <property name="connection.url">jdbc:oracle:thin:@localhost:1521:XE</property> <property name="connection.username">hr</property> <property name="connection.password">hr</property> <property name="cache.provider_class">org.hibernate.cache.HashtableCacheProvider</property> <property name="hibernate.hbm2ddl.auto">validate</property> <property name="transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property> <property name="current_session_context_class">thread</property> <property name="hibernate.show_sql">true</property> <mapping class="com.prateek.hibernate.employees"/> </session-factory> </hibernate-configuration> ```