Recently I was writing a small hibernate program and noticed that the program was not terminating even though main method is executed successfully. I was using Hibernate latest version 4.3.5.Final.…

JSP Directives are used to give special instruction to container for translation of JSP to Servlet code. JSP Directives are placed between <%@ %>. JSP Directives JSP provides three directives…

Welcome to Java Servlet Cookies example. Cookies are used a lot in web client-server communication, it’s not something specific to java. Some of the common usage of cookies are: Session…

Today we will look into Primefaces Themes. Primefaces is integrated with powerful ThemeRoller CSS framework. Currently there are 30+ pre-designed Primefaces free themes that you can preview and download from…

Welcome to Hibernate Caching – First Level Cache Example Tutorial. Recently we looked into Hibernate architecture, hibernate mapping and how to use HQL for firing SQL queries in object oriented…

Spring JDBC is the topic of this tutorial. Databases are integral part of most of the Enterprise Applications. So when it comes to a Java EE framework, having good integration…

In my last post, I explained about Builder Pattern in Java. Sometime back I wrote an article about how to create immutable class in java. In this post, we will…

Java access modifiers are used to provide access control in java. Java provides access control through three keywords – private, protected and public. We are not required to use these…

Sudo is one of the most widely used commands by Linux administrators and beginners alike. In this guide, we will look at sudo command and its usages. During the installation…

Introduction Linux passwd command changes a user’s password. A user can only change his/her own password but the root/superuser may change any user’s password. Let’s look at the Linux man…