hibernate exm with annotation

package com.jtc.p1;

import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;

import javax.persistence.JoinTable;
import javax.persistence.Table;

import org.hibernate.annotations.CollectionOfElements;

import org.hibernate.annotations.IndexColumn;

@Entity
@Table(name="stud")
public class Student_Pojo {
   
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    @Column(name="sid")
    private int sid;
   
    @Column(name="sname")
    private String sname;
   
    @Column(name="dob")
    private String dob;
   
    @Column(name="qualification")
    private String qualification;
   
    @CollectionOfElements
    @JoinTable(name="course")
    @JoinColumn(name="sid")
    @IndexColumn(name="xid")
    @Column(name="cname")
    private String[] courses;
   
    @CollectionOfElements
    @JoinTable(name="emails")
    @JoinColumn(name="sid")
    @IndexColumn(name="xid")
    @Column(name="emailid")
   
    private List<String> email;
   
    @CollectionOfElements
    @JoinTable(name="markes")
    @JoinColumn(name="sid")
    @IndexColumn(name="xid")
    @Column(name="studentMarks")
    private List<Integer> marks;
   
    @CollectionOfElements
    @JoinTable(name="phones")
    @JoinColumn(name="sid")
    @Column(name="phoneNo")
    private Set<Long> phone;
   
    @CollectionOfElements
    @JoinTable(name="refss")
    @JoinColumn(name="sid")
    @Column(name="ReffName")
    @org.hibernate.annotations.MapKey(columns=@Column(name="ReffNo"))
    private Map<String,Long> refs;
   
   
    public Student_Pojo() {
        //default constructor....
    }

    // generate constructor using field;
    public Student_Pojo( String sname, String dob, String qualification, String[] courses, List<String> email,
            List<Integer> marks, Set<Long> phone, Map<String, Long> refs) {
        this.sname = sname;
        this.dob = dob;
        this.qualification = qualification;
        this.courses = courses;
        this.email = email;
        this.marks = marks;
        this.phone = phone;
        this.refs = refs;
    }
   
    //setter and getter

    public int getSid() {
        return sid;
    }

    public void setSid(int sid) {
        this.sid = sid;
    }

    public String getSname() {
        return sname;
    }

    public void setSname(String sname) {
        this.sname = sname;
    }

    public String getDob() {
        return dob;
    }

    public void setDob(String dob) {
        this.dob = dob;
    }

    public String getQualification() {
        return qualification;
    }

    public void setQualification(String qualification) {
        this.qualification = qualification;
    }

    public String[] getCourses() {
        return courses;
    }

    public void setCourses(String[] courses) {
        this.courses = courses;
    }

    public List<String> getEmail() {
        return email;
    }

    public void setEmail(List<String> email) {
        this.email = email;
    }

    public List<Integer> getMarks() {
        return marks;
    }

    public void setMarks(List<Integer> marks) {
        this.marks = marks;
    }

    public Set<Long> getPhone() {
        return phone;
    }

    public void setPhone(Set<Long> phone) {
        this.phone = phone;
    }

    public Map<String, Long> getRefs() {
        return refs;
    }

    public void setRefs(Map<String, Long> refs) {
        this.refs = refs;
    }
   
   
   
   
   
   
   

}