Jalal MJADLI

JEE : Java Enterprise Edition (ex J2EE) is a specification of Java Sun technique for enterprise applications. These apllications are designed in a multi-levels approach. To do this, each implementation of this specification contains a set of  Java Standard framework extensions to make easy the creation of distributed applications. Servlet : Component reprensting the C of MVC paradigm Portlet : Web container (extension …

Continue reading »

There are 4 types of JDBC drivers: JDBC-ODBC bridge driver : it allows access to DBMS via ODBC.  It is accessible in J2SE platform via sun.jdbc.odbc.JdbcOdbcDriver. Native API partly Java driver : it translates JDBC’s calls to a particular DBMS through a mixture of Java’s API and native API. JDBC-Net pure Java driver : it is known …

Continue reading »

The source problem was a hidden file found in the device that records the position of users. Using a software application, a map of movements can be generated. The file doesn’t have any impact if the localisation services settings are disabled. This was discovered by

One of the useful solutions is to use the JAX-WS API. To do this, I suppose that you have: IDE: Eclipse JDK: 6 Tomcat 6 installed and configured to run under Eclipse, if it’s not the case, don’t be worry and click here to now how to do this. JAX-WS.jar downloaded in your machine, because …

Continue reading »

To make a connection with a mySql database : Use wamp server, to download it click here. Install it. Start it, left click on the icon in the task bar ( I say left click )   PHP > PHP Extensions > select php_mssql In your php page or classe use this code :// sqlServer …

Continue reading »

Google reveals its new OS web-based applications. It is a new approach exploiting web capabilities to use digital word. Google has developed a new OS that can be a real revolution of the web. In this model, user doesn’t need applications on his PC to work, he needs just a laptop equipped by a Chromebooks

«transient» is a keyword used to prevent serialization of certain variables in a class. It’s useful if we have to manipulate a sensitive variable which should not appear in a file or a stream (e.g passwords or some variables in games programs).

Servlet : it is a Java class allowing to create data dynamically in an HTTP server. Data created can be presented under HTML format, XML format or any other supported browser format. Servlet runs dynamically in the server and extends their functions : database access, e-commerce transactions… Servlet is loaded automatically in the server and stay active waiting …

Continue reading »

To make a connection with a mySql database : Use wamp server, to download it click here. Install it. Start it, left click on the icon in the task bar ( I say left click )   PHP > PHP Extensions > select php_mysql In your php page or classe use this code :// mySql …

Continue reading »

Sony officially announced their two new products: the Tablets S1 and S2. These tablets are based on Android3.0 platform (HoneyComp) and the  Tegra 2 processor of Nvidia.

What is Java? Java is an object oriented programing langauge, it is created by Sun Microsystems, and their specifications are manged by the same company (currently by Oracle). Why I need Java? Java comes with a very big advantage.

Class : is a declaration of common properties of a object’s group. It declares attributes of the objects to represent properties and methods to describe behaviors . Interface: is a contract passed between many classes. In general, it has a name

PHP is a language used to create a dynamic page web. It is very simple and it is a powerful language used by a large community on the web. To start with, you need a server that compile and interpret the php script after sending a request by the user (Client), then the server send a response …

Continue reading »

The three objects are : out : output canal request : HttpServletRequest, request object response : HttpServletResponse, response object   See also :

static is a keyword used with variables, methods, inner classes and code blocks. If it is used with : Method or variable : that means this method or variable doesn’t belong to a particular instance, it belongs to the class where it is declared. We can use it without creating

Polymorphism : it means that an entity can be used under many forms. For example, if we have a method called method(), the polymorphism allows to use it with another implementation like : method(p1) or , method(p1, p2) or any other form using the same name method. This can be helpful for an developer, because he shouldn’t …

Continue reading »

To do this, the simplest way is to use a JDBC driver : Downlaod the integral API from here. Put it in the /lib of your Tomcat installation folder if you want to use it in a web project or any folder accessible in your hard disk Right click on your project in Eclipse > Properties > Java Build Path > Add External …

Continue reading »

Hibernate is a an object/relational mapping framework, it allows to manipulate data from a relational database as objects. As a framework, it uses many files of mapping and settings.   See also :

final is a keyword used with methods, variables, classes, and parameters method. If it used with: Method : it can’t be redefined

«volatile» is a keyword used when a variable can be used by many threads. It allows an asynchronous access to this variable. By using this keyword the JVM