java - Hibernate one-to-many mapping eager fetch not working -

there 1 many relationship between college & student entities.

college

@entity public class college {  private int collegeid; private string collegename; private list<student> students;  @id @generatedvalue public int getcollegeid() {     return collegeid; }  public void setcollegeid(int collegeid) {     this.collegeid = collegeid; }  public string getcollegename() {     return collegename; }  public void setcollegename(string collegename) {     this.collegename = collegename; }  @onetomany(targetentity=student.class, mappedby="college", cascade=cascadetype.all, fetch=fetchtype.eager )  public list<student> getstudents() {     return students; }  public void setstudents(list<student> students) {     this.students = students; }  } 

student

@entity public class student {  private int studentid; private string studentname; private college college;  @id @generatedvalue public int getstudentid() {     return studentid; }  public void setstudentid(int studentid) {     this.studentid = studentid; }  public string getstudentname() {     return studentname; }  public void setstudentname(string studentname) {     this.studentname = studentname; }  @manytoone @joincolumn(name="college_id") public college getcollege() {     return college; }  public void setcollege(college college) {     this.college = college; }  } 

i newbie hibernate, based on understanding if set fetchtype fetchtype.eager whenever query single college object related student objects fetched automatically.i have used following query,

college college = (college) session.get(college.class, id); 

college object loaded when college.getstudents() in return i'll null. missing or proper way fetch eagarly.

your code looks ok, can please try below , let know works or not.

your line of code in college.java :

@onetomany(targetentity=student.class, mappedby="college", cascade=cascadetype.all, fetch=fetchtype.eager )  public list<student> getstudents() {     return students; } 

please try replace :

@onetomany(targetentity=student.class, mappedby="college", cascade=cascadetype.all, fetch=fetchtype.eager )  @joincolumn(name="college_id") // join column in table student public list<student> getstudents() {     return students; } 

hope helps you.