java - Hibernate joining two tables -

i trying learn spring , hibernate . have following form

after inserting form values in database tables, want them following:

table name : student

student_id    studentname   1.           jason stathum 

table name : studentdetails

studentdetailsid   fathername   mothername    student_id    1                 mr.x          mrs. y        1 

but when insert values in database, studentdetails table looks following

table name : studentdetails

studentdetailsid   fathername   mothername    student_id    1                 mr.x          mrs. y        null 

as can see works student_id column doesn't filled up. please tell me doing wrong?

here's codes:

model class : student

package com.spring.org.model  @entity @table(name = "student") public class student {  @id  @generatedvalue(strategy = generationtype.auto) @column(name="student_id", nullable= false) private integer studentid; private string studentname;  @onetomany(cascade = cascadetype.all, mappedby = "student") private list<studentdetails> studentdetails = new arraylist<studentdetails>();  // getters , setters 

model class : studentdetails

@entity @table(name = "studentdetails") public class studentdetails {  @id @generatedvalue(strategy = generationtype.auto) private integer studentdetailsid; private string fathername; private string mothername;  @manytoone @joincolumn(name="student_id") private student student;  // getters , setters 

controller

 @requestmapping(value="addstudent", method = requestmethod.get) public string addstudent(@modelattribute("secret") student student, bindingresult result, model map) {     map.addattribute("student", new student());          return "addstudent"; }  @requestmapping(value="addstudent", method = requestmethod.post) public string savestudent(@modelattribute("secret") student student, bindingresult result, model map) {     studentservice.addstudent(student);     map.addattribute("success", "submitted");     return "msg";  } 

jsp page : form

<c:url var="saveurl" value="/addstudent" />  <form:form modelattribute="secret" method="post" action="${saveurl}">   <table>   <tr>      <td><form:label path="studentname">student name:</form:label></td>      <td><form:input path="studentname"/></td>  </tr>    <tr>     <td><form:label path="studentdetails[0].fathername">father name:</form:label></td>     <td><form:input path="studentdetails[0].fathername"/></td>  </tr>   <tr>    <td><form:label path="studentdetails[0].mothername">mother name:</form:label></td>    <td><form:input path="studentdetails[0].mothername"/></td>  </tr> </table>   <input type="submit" value="save" /> </form:form> 

studentdaoimpl

@override public void addstudent(student student) {      session session = getsessionfactory().opensession();     transaction tx;     tx = session.begintransaction();     session.save(student);        tx.commit(); } 

removing @joincolumn annotation student attribute in studentdetails should fix issue:

@manytoone //@joincolumn(name="student_id") private student student;