Running First Hibernate 3.0 Example


Hibernate is free open source software it can be download fromhttp://www.hibernate.org/6.html. Visit the site and download Hibernate 3.0. You can download the Hibernate and install it yourself. But I have provided very thing in one zip file. Download the example code and library from hereand extract the content in your favorite directory say "C:\hibernateexample". Download file contains the Eclipse project. To run the example you should have the Eclipse IDE on your machine. Start the Eclipse project and select Java Project as shown below.

Click on "Next" button. 
Click on "Next" button. In the next screen leave the output folder as default "hibernateexample/bin".

Click on the "Finish" button.
Now Open the FirstExample.java in the editor as show below.
Copy  contact.hbm.xml, and hibernate.cfg.xml in the bin directory of the project using windows explorer. To run the example select Run-> Run As -> Java Application from the menu bar as shown below.




This will run the Hibernate example program in Eclipse following output will displayed on the Eclipse Console.


In this section I showed you how to run the our first Hibernate 3.0 example.

Comments

Post a Comment

Popular posts from this blog

Servlets, JSP, Struts and MVC

Image
1.General Information about servlet: Servlet Request & Response Model: There are three different players in this picture: browser, web server, and servlet Container. In many cases, a web server and a servlet container are running in a same machine even in a single virtual machine. So they are not really distinguished in many cases. Anyway, the role of the web server is to receive HTTP request and then passes it to the web container or servlet container Which then creates Java objects that represent “HTTP request” and a “session” and then dispatches the request to the servlet by invoking service() method defined in the servlet.         The most common form of client requests are HTTP GET and HTTP POST requests. In the HTTP GET request, the user entered information is appended to the URL as a query string. In the HTTP POST request, on the other hand, the user entered information is sent as data. Servlet Classes and Interfaces: This picture shows important
Read more

Hibernate Avg() Function (Aggregate Functions)

In this section, we will show you, how to use the avg() function. Hibernate supports multiple aggregate functions. When they are used in HQL queries, they return an aggregate value ( such as   avg(...), sum(...), min(...), max(...) , count(*), count(...), count(distinct ...), count(all...)   ) calculated from property values of all objects satisfying other query criteria.  Following is a aggregate function (avg() function) with their respective syntax. avg(   [   distinct   |   all   ] object.property): The   avg()   function aggregates the average value of the given column.  Table Name: insurance ID insurance_name invested_amount investement_date 2 Life Insurance 25000 0000-00-00 00:00:00 1 Givan Dhara 20000  2007-07-30 17:29:05 3 Life Insurance   500 2005-10-15 00:00:00 4 Car Insurance    2500 2005-01
Read more

Hibernate Count Query

In this section we will show you, how to use the Count Query. Hibernate supports multiple aggregate functions. when they are used in HQL queries, they return an aggregate value (such as sum, average, and count) calculated from property values of all objects satisfying other query criteria. These functions can be used along with the  distinct  and all  options, to return aggregate values calculated from only  distinct  values and all values (except null values), respectively. Following is a list of aggregate functions with their respective syntax; all of them are self-explanatory. count ( [   distinct   |   all   ] object | object.property ) count(*)  (equivalent to   count(all ...) , counts null values also) sum (   [   distinct   |   all   ] object.property) avg(   [   distinct   |   all   ] object.property) max(   [   distinct   |   all   ] object.property) min(  [  distinct  |  all  ] object.property) Here is the java code for counting the records from insurance tab
Read more