GMsoF:

@Entity
@Table(name = "STUDENT")
public class Student {

    private long studentId;
    private String studentName;
    private List studentPhoneNumbers;

    ....

    @OneToMany(cascade = CascadeType.ALL)
    @JoinTable(name = "STUDENT_PHONE", joinColumns = { @JoinColumn(name = "STUDENT_ID") }, inverseJoinColumns = { @JoinColumn(name = "PHONE_ID") })
    public List getStudentPhoneNumbers() {
        return this.studentPhoneNumbers;
    }

    public void setStudentPhoneNumbers(List studentPhoneNumbers) {
        this.studentPhoneNumbers = studentPhoneNumbers;
    }
}

1)

Student student = session.loadStudent(123); // pseudocode
List phoneList = student.getStudentPhoneNumbers();
for (Phone p : phoneList) {
    ...
}

2)

Student student = session.loadStudent(123); // pseudocode
List phoneList = student.getStudentPhoneNumbers();
Iterator itr = phoneList.iterator();   
while(itr.hasNext()) {
    ...
}

I read the answer from here: difference between query.list and query.iterate

Obviously there is difference between list() and iterator() (in Query). What if I use it in the OneToMany list? like the example above, is there difference in term of performance? memory?