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Recently I was developing a simple hibernate application with version 4.3.5.Final and everything looked fine to me until I got below exception. [crayon-651132ac12288542137683/] org.hibernate.HibernateException: get is not valid without active…

If you work on web services, you must have been using XSD. To test the web service, you need to generate XML from XSD file. Generate XML from XSD We…

What is a Queue? Queue is a special type of data structure, which is designed to hold elements before processing and process elements in a FIFO (first-in-first-out) manner. It’s part…

Depth First Search (DFS) is an algorithm that searches a graph/tree, in a depth-wise manner. There are many ways through which we can traverse through a graph. The two most…

This is the third post in the Struts 2 series. You might want to check out earlier posts too. Struts Beginners Tutorial and Hello World XML Example Struts 2 Example…

With the help of specific functions offered by R, reading the CSV files into data frames is much easier. What is a CSV file? CSV is expanded as Comma, Separated,…

This is the second part in the Spring ActiveMQ example tutorial. Please head over to the first part at Spring AMQP ActiveMQ Tutorial. Spring ActiveMQ Example We will have following…

Recently I have written a lot of hibernate tutorial. Hibernate is one of the best Java ORM tool in the current market. So this post is like an index of…

In the previous tutorials that we’ve examined before, a RenderResponse writer is used mainly for writing the Portlets’ fragments into Portal page. This way of forming the Portlets’ contents isn’t…

Java List is an ordered collection. Java List is an interface that extends Collection interface. Java List provides control over the position where you can insert an element. You can…