java - Repeated column in mapping for entry error -

i doing simple hibernate program in use attribute override , embedded object keys , got error:

exception in thread "main" org.hibernate.mappingexception: repeated column in mapping entity: com.hibernate.model.employee column: pincode (should mapped insert="false" update="false")

employee.java

package com.hibernate.model;  import javax.persistence.attributeoverride; import javax.persistence.attributeoverrides; import javax.persistence.column; import javax.persistence.embedded; import javax.persistence.entity; import javax.persistence.generatedvalue; import javax.persistence.generationtype; import javax.persistence.id; import javax.persistence.table;  @entity @table (name="employee") public class employee {      @id     @generatedvalue(strategy=generationtype.auto)     private int id;     private string  firstname;     private string  lastname;     private string  email;     private string  phoneno;      @embedded     @attributeoverrides({     @attributeoverride (name="city" ,   column=@column(name="office_city")),     @attributeoverride (name="state",   column=@column(name="office_state")),     @attributeoverride (name="country", column=@column(name="office_country")),     @attributeoverride (name="pincode", column=@column(name="office_pincode"))})     private address  officeaddress;      @embedded     private address  homeaddress;       public int getid() {         return id;     }     public void setid(int id) {         this.id = id;     }     public string getfirstname() {         return firstname;     }     public void setfirstname(string firstname) {         this.firstname = firstname;     }     public string getlastname() {         return lastname;     }     public void setlastname(string lastname) {         lastname = lastname;     }     public string getemail() {         return email;     }     public void setemail(string email) {         this.email = email;     }     public string getphoneno() {         return phoneno;     }     public void setphoneno(string phoneno) {         this.phoneno = phoneno;     }     public address getofficeaddress() {         return officeaddress;     }     public void setofficeaddress(address officeaddress) {         this.officeaddress = officeaddress;     }     public address gethomeaddress() {         return homeaddress;     }     public void sethomeaddress(address homeaddress) {         this.homeaddress = homeaddress;     } } 

address.java

package com.hibernate.model;  import javax.persistence.embeddable;  @embeddable public class address {      private string city;     private string state;     private string country;     private string pincode;     public string getcity() {         return city;     }     public void setcity(string city) {         city = city;     }     public string getstate() {         return state;     }     public void setstate(string state) {         state = state;     }     public string getcountry() {         return country;     }     public void setcountry(string country) {         country = country;     }     public string getpincode() {         return pincode;     }     public void setpincode(string pincode) {         this.pincode = pincode;     }    } 

hibernate.jsp

package com.hibernate.test;  import org.hibernate.session; import org.hibernate.sessionfactory; import org.hibernate.cfg.configuration;  import com.hibernate.model.address; import com.hibernate.model.employee;  public class hibernatetest {      public static void main(string[] args) {          employee emp = new employee();          address addr=new address();          emp.setfirstname("vikas");         emp.setlastname("bhardwaj");         emp.setemail("bhardwajvikas93@gmail.com");         emp.setphoneno("9741178304");          addr.setcity("mehre");         addr.setcountry("india");         addr.setstate("himachal");         addr.setpincode("174305");          emp.sethomeaddress(addr);          address addr2 = new address();         addr2.setcity("bangalore");         addr2.setcountry("india");         addr2.setstate("karnatka");         addr2.setpincode("560008");          emp.setofficeaddress(addr2);          sessionfactory sf = new configuration().configure().buildsessionfactory();         session ssn = sf.opensession();         ssn.begintransaction();         ssn.save(emp);         ssn.gettransaction().commit();         ssn.close();     } } 

cfg.xml

<?xml version='1.0' encoding='utf-8'?> <!doctype hibernate-configuration public         "-//hibernate/hibernate configuration dtd 3.0//en"         "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">  <hibernate-configuration>      <session-factory>          <!-- database connection settings -->         <property name="connection.driver_class">com.mysql.jdbc.driver</property>         <property name="connection.url">jdbc:mysql://localhost:3306/hibernatedb</property>         <property name="connection.username">root</property>         <property name="connection.password">vikas</property>          <!-- jdbc connection pool (use built-in) -->         <property name="connection.pool_size">1</property>          <!-- sql dialect -->         <property name="dialect">org.hibernate.dialect.mysqldialect</property>          <!-- disable second-level cache  -->         <property name="cache.provider_class">org.hibernate.cache.internal.nocacheprovider</property>          <!-- echo executed sql stdout -->         <property name="show_sql">true</property>          <!-- drop , re-create database schema on startup -->         <property name="hbm2ddl.auto">create</property>          <!-- names annotated entity class -->         <mapping class="com.hibernate.model.employee"/>         <mapping class="com.hibernate.model.address"/>      </session-factory>  </hibernate-configuration> 

in program embedable, printing both member variables in 1 table.

the task address class, printing 2 addresses. 1 home address , 1 office address using attributeoverrides gives me error mentioned above.

you need specify valid property name pincode

@attributeoverride (name="pincode", column=@column(name="office_pincode")) 

need change to

@attributeoverride (name="pincode", column=@column(name="office_pincode")) 

try specify @attributeoverrides homeaddress, if not help.