In some cases, from the beans used in JSF applications, you will need to access the request parameters. For example, in the BusSearch.java, we accessed, the request parameters [Please check the previous JSF lesson]. How to access: FacesContext context = FacesContext.getCurrentInstance(); Some methods of FacesContext: Map getApplicationMap() String getInitParameter(java.lang.String name) Map getInitParameterMap() String getRemoteUser() Map …
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Jul 19
JSF: Lesson – 5: Converting Data #Java Short Notes
Sample application for JSF Data Type Converter Video Tutorial for JSF Data Type Converter Pre-requisite: JSF Lesson 1, 2, 3, 4 JSF provides two different types of built-in data type converters such as: String and Date Conversion, Number and String Conversion. Related tags: f:convertDateTime, f:convertNumber, f:converter In our previous examples, we could accept departing and …
Jul 19
JSF: Lesson – 6: Validating User Input in JSF #Java Short Notes
Target: Intermediate level web-developers. Sample application for this article Video Tutorial for this article In web-application development, validating user inputs takes much efforts. JSF has made validations much easier than usual JSF Built-in Validators: validateDoubleRange: Checks that the value provided is a double value. You can also set a minimum and a maximum. validateLongRange: Validates …
Jul 19
Struts 2 vs. Struts 1 #Java Short Notes
Please check the following resources: Struts 2: Configuration Elements Struts 1 vs Struts 2 Migrating from Struts 1 to Struts 2 Comparing Struts 1 and 2 From: http://sitestree.com/?p=4987 Categories:Java Short NotesTags: Post Data:2008-11-22 05:09:37 Shop Online: https://www.ShopForSoul.com/ (Big Data, Cloud, Security, Machine Learning): Courses: http://Training.SitesTree.com In Bengali: http://Bangla.SaLearningSchool.com http://SitesTree.com 8112223 Canada Inc./JustEtc: http://JustEtc.net (Software/Web/Mobile/Big-Data/Machine Learning) …
Jul 19
Key J2EE Components : Basic Concepts with Examples #Java Short Notes
Java EE 5 (J2EE 5) uses XML deployment descriptors for the configuration of the web-applications and web-components. What Java EE provides? It provides the internal framework/structure/system level capability/system-level infrastructure to support large enterprise level applications with features like distributed database, distributed computing , security, and transaction management. J2EE also provides specifications for Containers, Connectors, Interfaces, …
Jul 19
JSF: Lesson – 1: JSF Specifications #Java Short Notes
Video Demonstration of a sample JSF application create: Read the article first JSF Specifications JSF is not standalone technology, you have to use it in conjunction with JSPs, Servlets, EJBs How to use JSF with Servlets and EJBs: In Servlet or EJB, explicitly create instances of UI components and use the UI classes directly JSF …
Jul 19
JSF: Lesson – 2: JSF Managed Beans #Java Short Notes
Codes for this article Video Demonstration for this article Target: Intermediate level programmers and web-developers. Any programmer/web-developer can take a look. Pre-requisite: HTML, JSP, Servlet, Tomcat, J2EE, MVC, and JSF Introduction. Check the corresponding sections of this web-site, to have an idea on the required technology knowledge Pre-requisite: Download this sample JSF application Beans used …
Jul 19
Step By Step Video Tutorial: Struts-based Java Web Application Development #Java Short Notes
Please follow the link to see a list of training videos on Struts. And watch them. Step By Step Video Tutorial: Struts-based Java Web Application Development From: http://sitestree.com/?p=4986 Categories:Java Short NotesTags: Post Data:2010-06-21 20:35:21 Shop Online: https://www.ShopForSoul.com/ (Big Data, Cloud, Security, Machine Learning): Courses: http://Training.SitesTree.com In Bengali: http://Bangla.SaLearningSchool.com http://SitesTree.com 8112223 Canada Inc./JustEtc: http://JustEtc.net (Software/Web/Mobile/Big-Data/Machine Learning) …
Jul 18
Creating Java Development Environment with Struts for Your Home PC #Java Short Notes
Creating Java Development Environment with Struts for Your Home PC…………………….. Why Struts? Just take a look at the web-sites using Struts J2EE does not meet all the requirements for web-applications. Struts addresses these requirements. Check this article for details Components Required J2SE 5/6 or J2EE 5 – both JRE and JDK Tomcat 5.5/6 – web-server …
Jul 18
J2EE Architecture: J2EE Design Patterns: Related Concepts #Java Short Notes
Design Patterns What are design patterns? Design patterns are specific/(context-based) solutions/approaches to address specific problems/situations. Some problems are general/open problems and very common problems in a particular type of applications. Design patterns can be created to solve such problems in a specific context and that can be re-used every time that type of situations arise. …
