java - Initial SessionFactory creation failed.org.hibernate.AnnotationException: @OneToOne or @ManyToOne on net.viralpatel.hibernate.Employee.department -

i new hibernate. developed onetomany relation example, see following example. please me how solve below error?

info: bind entity net.viralpatel.hibernate.employee on table employee initial sessionfactory creation failed.org.hibernate.annotationexception: @onetoone or @manytoone on net.viralpatel.hibernate.employee.department references unknown entity: net.viralpatel.hibernate.department exception in thread "main" java.lang.exceptionininitializererror     @ net.viralpatel.hibernate.hibernateutil.buildsessionfactory(hibernateutil.java:18)     @ net.viralpatel.hibernate.hibernateutil.<clinit>(hibernateutil.java:8)     @ net.viralpatel.hibernate.main.main(main.java:12) caused by: org.hibernate.annotationexception: @onetoone or @manytoone on net.viralpatel.hibernate.employee.department references unknown entity: net.viralpatel.hibernate.department     @ org.hibernate.cfg.toonefksecondpass.dosecondpass(toonefksecondpass.java:81)     @ org.hibernate.cfg.annotationconfiguration.processfksecondpassinorder(annotationconfiguration.java:499)     @ org.hibernate.cfg.annotationconfiguration.secondpasscompile(annotationconfiguration.java:304)     @ org.hibernate.cfg.configuration.buildsessionfactory(configuration.java:1292)     @ org.hibernate.cfg.annotationconfiguration.buildsessionfactory(annotationconfiguration.java:859)     @ net.viralpatel.hibernate.hibernateutil.buildsessionfactory(hibernateutil.java:15)     ... 2 more 

i developed code far:

@entity @table(name="employee") public class employee {     @id     @generatedvalue     @column(name="employee_id")     private long employeeid;      @column(name="firstname")     private string firstname;      @column(name="lastname")     private string lastname;      @column(name="birth_date")     private date birthdate;      @column(name="cell_phone")     private string cellphone;      @manytoone     @joincolumn(name="departmentid")     private department department;       public employee(){}      public employee(string firstname, string lastname, string phone) {         this.firstname = firstname;         this.lastname = lastname;         this.birthdate = new date(system.currenttimemillis());         this.cellphone = phone;     }   // setters , getters  } 

department

public class department {     @id     @generatedvalue     @column(name="department_id")     private long departmentid;     @column(name="dept_name")     private string departmentname;     @onetomany     private list<employee> employees;      public long getdepartmentid() {         return departmentid;     }      public void setdepartmentid(long departmentid) {         this.departmentid = departmentid;     }      public string getdepartmentname() {         return departmentname;     }      public void setdepartmentname(string departmentname) {         this.departmentname = departmentname;     }      public list<employee> getemployees() {         return employees;     }      public void setemployees(list<employee> employees) {         this.employees = employees;     } } 

hibernateutil

public class hibernateutil {      private static final sessionfactory sessionfactory = buildsessionfactory();      private static sessionfactory buildsessionfactory() {         try {             // create sessionfactory hibernate.cfg.xml             return new annotationconfiguration().configure().buildsessionfactory();         } catch (throwable ex) {             system.err.println("initial sessionfactory creation failed." + ex);             throw new exceptionininitializererror(ex);         }     }      public static sessionfactory getsessionfactory() {         return sessionfactory;     } } 

main

public class main {      public static void main(string[] args) {          sessionfactory sf = hibernateutil.getsessionfactory();         session session = sf.opensession();         session.begintransaction();          department department = new department();         department.setdepartmentname("sales");          employee emp1 = new employee("nina", "mayers", "111");         employee emp2 = new employee("tony", "almeida", "222");          department.setemployees(new arraylist<employee>());         department.getemployees().add(emp1);         department.getemployees().add(emp2);          session.save(department);          session.gettransaction().commit();         session.close();     } } 

mark department class entity @entity annotation.