What is servlet?


Java Servlets Java Servlet is the serverside Java programming language. We can say it as serverside applet. How applet is used for writing the client side code, servlet is used for writing the serverside programming language. Servlet programming is first created by Sun Microsystems in June 1997. The latest version is Servlet2.5 which is released […]

Call Java Oracle Functions From Java program


Call Java Oracle Functions From Java program Beginning with version 8i, the Oracle database includes a fully functional Java Virtual Machine, Oracle JVM. Out of this close relationship between Oracle and Java emerges an important technology for Oracle developers: Java stored procedures. With Java stored procedures, developers have the ability to harness the power of […]

Configure MySql Database With Hibernate Mappings


Configure MySql Database Configuring MySql database with hibernate is the same as with other databasses. The only difference will be connection url and the database dialect to be specified in the configuration file. This tips provides a basic example configuration file for configuaring the MySql with hibernate. But it doesn’t explain you installing the MySql […]

JPA and NetBeans


In this article we will see how to use Java Persistence API (JPA) in NetBeans 6.1 with in a Java application. The JPA was first introduced as part of the Java EE 5 platform. This article will not provide any of the theoretical information about JPA. Software used NetBeans IDE 6.1 JDK version 5.0/6.0 MySql […]

Collection Mapping in Hibernate : one-to-many


one-to-many class mapping This article explains how to map two classes in collection mapping. In this example one Author object has the list of Book objects. Both the classes are mapped and will be inserted together into the database. Here this example uses Bag as the collection type. Other collection types available are Set,List,Array. Look […]

Comparison operators in Hibernate


Comparison operators HQL supports all the operators used in the SQL language. But, Criteria API doesn’t support the arithmetic expressions. Apart from that, it is easy to use other operators in the Criteria API itself. This tips provides few basic example programs on using the operators. JavaBeatHibernateExample.java also read: Introduction to Hibernate Hibernate Interview Questions […]

NULL and NOT NULL comparison in the Hibernate API


null and not null check While checking for the null and not null values in the Hibernate API, we have to be careful and there is chance for misunderstanding. This tips explains how to compare the null values in the Hibernate query. also read: Introduction to Hibernate Hibernate Interview Questions Interceptors in Hibernate Hibernate Books […]

How to use named parameters and named query in Hibernate?


Named Parameters in Hibernate Query There is two types of query parameters binding in the Hibernate Query. One is positioned parameter and another one is named parameter. But, hibernate recommend to use the named parameters since it is more flexible and powerful compare to the positioned parameter. Here we will look into the named parameter […]

Pagination in Hibernate Query API


Pagination in Hibernate Query API Pagination is the very common problem for the most of the eneterprise applications.When we are retrieving thousands of records from the database, it is not good idea to retrieve all the records at the same time. So, we have to implement some sort of pagination concept in your application to […]

Three ways to create query in Hibernate


Create Query in Hibernate To create query in the Hibernate ORM framework, there is three different types. The following are the three ways to create query instance: session.createQuery() session.createSQLQuery() session.createCriteria() We will look into the details of each category in detail. also read: Introduction to Hibernate Hibernate Interview Questions Interceptors in Hibernate Hibernate Books session.createQuery() […]