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JPA Named Parameter

In this section, you will learn how to use JPA Named Parameter in your jpa application

JPA Named Parameter


In this section, you will learn how to use JPA Named Parameter in your jpa application. In JPA named parameter is used where you assign names. You will see how to use named parameter in the example discussed in this section. We pass the required values using using the setParameter() method.

For developing JPA Named Parameter, you need the following artifacts:

  1. Database Table: student
  2. Model Class:
  3. Main Class:

Database Table: student

CREATE TABLE `student` ( 
`id` int(11) NOT NULL auto_increment, 
`sname` varchar(100) NOT NULL, 
`sroll` int(11) NOT NULL, 
`scourse` varchar(10) NOT NULL, 

Model Class:


package roseindia;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.Table;

* @author Administrator

public class Student {

private int id;

* @return the id
public int getId() {
return id;

* @param id the id to set
public void setId(int id) { = id;

@Column(name="sname", length=100,nullable=false)
private String sname;

* @return the sname
public String getSname() {
return sname;

* @param sname the sname to set
public void setSname(String sname) {
this.sname = sname;

private int sroll;

* @return the sroll
public int getSroll() {
return sroll;

* @param sroll the sroll to set
public void setSroll(int sroll) {
this.sroll = sroll;

private String scourse;

* @return the scourse
public String getScourse() {
return scourse;

* @param scourse the scourse to set
public void setScourse(String scourse) {
this.scourse = scourse;


Main Class:


package roseindia;

import java.util.Iterator;
import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;
import javax.persistence.Query;

* @author Vinod kumar
public class JPANamedParamter {

* @param args
public static void main(String[] args) {
// TODO Auto-generated method stub

EntityManagerFactory emf=Persistence.createEntityManagerFactory("jpa");
EntityManager em=emf.createEntityManager();
EntityTransaction entr=em.getTransaction();
Query query=em.createQuery
("SELECT st FROM Student st WHERE st.sroll < :roll");
query.setParameter("roll", 102);
List stList=query.getResultList();
Iterator stIterator=stList.iterator();
Student st=(Student);
System.out.print(" sname:"+st.getSname());
System.out.print(" sroll:"+st.getSroll());
System.out.print(" scourse:"+st.getScourse());




log4j:WARN No appenders could be found for logger

log4j:WARN Please initialize the log4j system properly.

Hibernate: select as id0_, student0_.scourse as
scourse0_, student0_.sname as sname0_, student0_.sroll as
sroll0_ from student student0_ where student0_.sroll<?

id:1 sname:Vinod sroll:101 scourse:MCA



Posted on: September 29, 2006 If you enjoyed this post then why not add us on Google+? Add us to your Circles

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