Transaction tx = null;
      Session session = InitSessionFactory.getInstance().getCurrentSession();
      try {
         tx = session.beginTransaction();
         EaAudit  eaAudit= (EaAudit)session.get(EaAudit.class, new Long(7));
         EaAuditProg  eaAuditProg= new EaAuditProg();
         eaAudit.getEaAuditProgs().add(eaAuditProg);
         
         eaAuditProg.setEaAudit(eaAudit);
         session.save(eaAudit);
         System.out.println(eaAuditProg.getSysAuditProgId());  // this returns null
         tx.commit();
      } catch (HibernateException e) {
         e.printStackTrace();
         if (tx != null && tx.isActive())
            tx.rollback();

      }

package de.laliluna.example;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;

/**
* <p>Pojo mapping TABLE PUBLIC.EA_AUDIT</p>
*
* <p>Generated at Thu Jan 01 20:13:11 EST 2009</p>
* @author Salto-db Generator v1.0.16 / EJB3
*
*/
@Entity
@Table(name = "EA_AUDIT", schema = "PUBLIC")
@SuppressWarnings("serial")
public class EaAudit implements Serializable {

   /**
    * Attribute sysAuditId.
    */
   private Long sysAuditId;
   
   /**
    * List of EaAuditProg
    */
   private List<EaAuditProg> eaAuditProgs = new ArrayList<EaAuditProg>();

   
   /**
    * @return sysAuditId
    */
   @Id
    @GeneratedValue(generator="eaauditseq",strategy=GenerationType.SEQUENCE)
    @SequenceGenerator(name="eaauditseq",sequenceName="eaauditseq", allocationSize=1)
   @Column(name = "SYS_AUDIT_ID")
      public Long getSysAuditId() {
      return sysAuditId;
   }

   /**
    * @param sysAuditId new value for sysAuditId
    */
   public void setSysAuditId(Long sysAuditId) {
      this.sysAuditId = sysAuditId;
   }
   
   /**
    * Get the list of EaAuditProg
    */
    @OneToMany(mappedBy="eaAudit",cascade=CascadeType.ALL)
    public List<EaAuditProg> getEaAuditProgs() {
       return this.eaAuditProgs;
    }
   
   /**
    * Set the list of EaAuditProg
    */
    public void setEaAuditProgs(List<EaAuditProg> eaAuditProgs) {
       this.eaAuditProgs = eaAuditProgs;
    }


}

package de.laliluna.example;

import java.util.List;
import java.io.Serializable;
import java.sql.Timestamp;

import javax.persistence.Basic;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import javax.persistence.Column;
import javax.persistence.FetchType;
import javax.persistence.JoinColumn;
import javax.persistence.JoinColumns;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.Transient;
import javax.persistence.Embeddable;

/**
* <p>Pojo mapping TABLE PUBLIC.EA_AUDIT_PROG</p>
*
* <p>Generated at Thu Jan 01 20:13:11 EST 2009</p>
* @author Salto-db Generator v1.0.16 / EJB3
*
*/
@Entity
@Table(name = "EA_AUDIT_PROG", schema = "PUBLIC")
@SuppressWarnings("serial")
public class EaAuditProg implements Serializable {

   /**
    * Attribute sysAuditProgId.
    */
   private Long sysAuditProgId;
   
   /**
    * Attribute infProgram
    */
    private InfProgram infProgram;   

   /**
    * Attribute eaAudit
    */
    private EaAudit eaAudit;   

   
   /**
    * @return sysAuditProgId
    */
   @Id
    @GeneratedValue(generator="eaauditprog",strategy=GenerationType.SEQUENCE)
    @SequenceGenerator(name="eaauditprog",sequenceName="eaauditprog", allocationSize=1)
   @Column(name = "SYS_AUDIT_PROG_ID")
      public Long getSysAuditProgId() {
      return sysAuditProgId;
   }

   /**
    * @param sysAuditProgId new value for sysAuditProgId
    */
   public void setSysAuditProgId(Long sysAuditProgId) {
      this.sysAuditProgId = sysAuditProgId;
   }
   
   /**
    * get infProgram
    */
   @ManyToOne
   @JoinColumn(name = "SYS_PROG_ID")
   public InfProgram getInfProgram() {
      return this.infProgram;
   }
   
   /**
    * set infProgram
    */
   public void setInfProgram(InfProgram infProgram) {
      this.infProgram = infProgram;
   }

   /**
    * get eaAudit
    */
   @ManyToOne
   @JoinColumn(name = "SYS_AUDIT_ID")
   public EaAudit getEaAudit() {
      return this.eaAudit;
   }
   
   /**
    * set eaAudit
    */
   public void setEaAudit(EaAudit eaAudit) {
      this.eaAudit = eaAudit;
   }



}