Roy Tutorials

Programmatic Transaction In this tutorial I will show an example on programmatic transaction management in Spring. If you want to read about Spring Transaction or Programmatic Transaction management then you can read Transaction management in Spring. Here I will show annotation based Spring stand alone application approach and Spring Boot application to create Programmatic Transaction Management example in Spring. I…

Introduction I will show you here how to create multiple namespaces in struts 2 web application. The benefit of namespace is the same file and action can be mapped to the multiple modules. The default namespace is “” – an empty string. A root namespace “/” is also supported. The namespace attribute subdivides action configurations into logical modules, each with…

Introduction File Upload is one of the common tasks of a web application and Struts 2 provides built-in feature for single file upload through FileUploadInterceptor. Interceptors are cross cutting concerns or common concerns like Logging. FileUploadInterceptor is configured in the struts-default package that we usually extend in Struts 2 package configuration. FileUploadInterceptor also provide options to set the maximum file…

Introduction File Upload is one of the common tasks of a web application and Struts 2 provides built-in feature for multiple files upload through FileUploadInterceptor. Interceptors are cross cutting concerns or common concerns like Logging. FileUploadInterceptor is configured in the struts-default package that we usually extend in Struts 2 package configuration. FileUploadInterceptor also provide options to set the maximum file…

Introduction In this tutorial I will show how to create effective pagination example in jsf 2, hibernate and in-memory database – hsqdb . In memory database like hsqldb is good when you want to do some quick POC or testing the application without setting up a large database. There are lots of built-in API for datatable paginations like PrimeFaces, RichFaces,…

Introduction Here you will see file upload example in JSF 2. The file upload implementation in Java based web application is very complex and you need to be dependent on Apache file upload libraries. When you work on JSF(Java Server Faces), you have JSF (Java Faces Server) pages with other inputs along with file inputs on the web page, so…

Introduction This tutorial shows how to use ValueChangeListener to create dependent dropdown in JSF 2 and MySQL. I have used here JSF 2’s valueChangeListener which fires value change event when select option dropdown gets changed. Any component that receives user input, such as one of the HTML select or text input components, can publish value change events. The dependent dropdowns…

In this tutorial I will show step-by-step how to create a Liferay plugin project. This plugin project is all about creating webservice in liferay. Prerequisites Liferay Developer Studio 1.4, Liferay 6

In this post I will show how to call plugin webservice remotely. If we have wsdl file then we can generate the client or stub from wsdl file and invoke the operations/methods of the service. Before reading this post I would suggest please go through Creating Liferay plugin webservice project

Liferay is a Open Source Content Management System and it’s popularity increasing day by day  but there are no much tutorials on this. Sometimes we find some examples but it may not work exactly the way have been written in the websites. Sometimes the tutorial steps have not been started from the scratch and it results confusion. I am going…