Hai

I have created two table

first table as student

package com.crimson.rship;

import javax.persistence.Basic; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.Id; import javax.persistence.OneToMany; @Entity(name="student")

public class student {

@Id private String stumailid; @Basic
private String fathername; @Basic
private String mothername; @Basic
private String doa; @Basic
private String dob; public student(String stumailid,String fathername,String mothername,String doa,String dob)

{ // TODO Auto-generated constructor stub this.stumailid=stumailid; this.fathername=fathername; this.mothername=mothername; this.doa=doa; this.dob=dob; }

public void setStumailid(String stumailid) { this.stumailid = stumailid; }

public String getStumailid() { return stumailid; }

public void setFathername(String fathername) { this.fathername = fathername; }

public String getFathername() { return fathername; }

public void setMothername(String mothername) { this.mothername = mothername; }

public String getMothername() { return mothername; }

public void setDoa(String doa) { this.doa = doa; }

public String getDoa() { return doa; }

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

public String getDob() { return dob; } }

Second table as mark

package com.crimson.rship;

import java.util.Collection;

import javax.persistence.Basic; import javax.persistence.Entity; import javax.persistence.FetchType; import javax.persistence.Id; import javax.persistence.JoinColumn; import javax.persistence.JoinTable; import javax.persistence.OneToMany; @Entity(name="mark")

public class mark {

@Id private String stumailid; @Basic
private String fathername; @Basic
private String mothername;

 @OneToMany(mappedBy="mark",targetEntity=student.class,fetch=FetchType.EAGER)

private Collection orders;

 public mark(String stumailid,String fathername,String mothername)

{ // TODO Auto-generated constructor stub this.stumailid=stumailid; this.fathername=fathername; this.mothername=mothername;

}

public void setStumailid(String stumailid) { this.stumailid = stumailid; }

public String getStumailid() { return stumailid; }

public void setFathername(String fathername) { this.fathername = fathername; }

public String getFathername() { return fathername; }

public void setMothername(String mothername) { this.mothername = mothername; }

public String getMothername() { return mothername; }

public void setOrders(Collection orders) { this.orders = orders; }

public Collection getOrders() { return orders; } }

But this above coding working is not working correctly.can any one help me

Thanks in advance