If the result set is large, then having the entire result set in memory will not be feasible. With large result sets, you cannot afford to have them in memory. In such case, you have to fetch a chunk of data at a time (query based paging). The down side of using query based paging, …
Struts 2.0 and Spring
In this post, I will describe how to do the same using Struts 2.0. The only major step that needs to be done here is to override the default Struts 2.0 OjbectFactory. Changing the ObjectFactory to Spring give control to Spring framework to instantiate action instances etc. Most of the code is from the previous …
Servlet 3.0
Can’t wait to see Servlet 3.0 in action. More details about the specification and the current status is available in its JSR homepage. The introduction of support for non-blocking I/O takes Java Servlets to a new level and this, in my opinion,is the most significant stride in Servlet specification since it was introduced. The benefits …
Beginners Guide for Struts 2 Custom Validators
Struts 2.0 allows the use of Custom validators through the @CustomValidator annotation. The @CustomValidator annotation takes two mandatory parameters, type and message also read: Struts 2 Tutorials Struts Interview Questions Struts and Spring Integration type: Refers to the “name” given to the validator in the validators.xml file. message: Message to be displayed when this validator …
Difference between hibernate’s save,update and saveOrUpdate() methods
Difference between hibernate’s save,update and saveOrUpdate() methods Hibetnate has set of methods for saving and updating the values in the database. The methods look like same and difficult to differentiate between them if you are not understanding them clearly. If you understand the hibernate mechanism clearly, it doesn’t execute the SQL statements directly to manipulate …
What is Shale Web Framework?
Apache Shale is a Java Server Faces based Web Application Framework from the Apache software foundation. Shale is talked of as the “heir” Apache struts framework. also read: Introduction to JSF JSF Interview Questions Request Processing Lifecycle phases in JSF We all know that struts is the most used Java Web Framework so far. While …
EJB Webservices in JBoss application server sample code
also read: Java EE Tutorials EJB Interview Questions EJB 3 Web Services Annotation and Dependency Injection in EJB 3 Query API in EJB 3 deploy above two classes by archieving in a jar and copy it to deploy folder of jboss then run ur jboss server with url http://localhost:8080/jbossws there u will get all ur …
How to delete a cookie on server in a J2EE application
There is no direct method offered by servlet API to delete a cookie on server side. This is how you can go about doing it. also read: Java EE Tutorials Servlets Interview Questions New Features in Servlets 3.0 Asynchronous Servlets in Servlets 3 Loop through the cookies in the request object to locate the one …