Nowadays everyone has internet, there are a lot of web pages and it is quite difficult to perform an accurate research among these pages to get the correct information that you need.
The problem is that the information online is not structured like a database:
Web page is complex document with pictures, videos, images and meta information of [...]
How is internet search engine made of?
How I can search a lot of information in many documents or web pages?
I could search these information using a information retrieval system.
Information retrieval
The information retrival system executes queries to text unstructured document but this file is not ready to search information inside it beca [...]
There most important front end frameworks of J2EE are Spring MVC and JSF.
JSF: Java Server Facets
JSF in my opinion is the most used front end framework because it is easy and stable: you can make a very complex and secure web application in few time using it.
This framework has the principal component called “portlet”
each portl [...]
An applet is a special java class that is executed on computer client in the same manner that you execute the command java -jar for this reason an applet can perform everything on your machine for example it has an access on your file system and it can copy everything from/to your computer, it can read all your mails and your documents etc.
[...]
These libraries allow to work with the lowest layer of the TCP-IP protocol in client-server applications, this layer is a little up the transport one.
Internet is a wide network, when a computer is connected to the telephone line, this machine is connected to the ISP (internet service provider) and this ISP have all the tools to allows to in [...]
In the precedent page I’ve talked about J2EE and the main technologies, in a few word J2EE is composed by this layers:
Presentation layer
business layer
persistence layer
database (ETL)
Each layer have a lot of frameworks to simplify the way to make it:
Presentation tier (JSF, Primefaces, Richfaces, struts) that I used in affittavetr [...]
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