Java Reference
In-Depth Information
1.1 Browsing the Internet
Before the conception of Web 2.0 (around 1999), the basic use of the World Wide Web
(WWW) and the Internet was simple and based on the traditional client-server model with
older technologies such as Remote Procedure Call (RPC) or Transaction Processing (TP)
Monitors or other middleware that permitted programmable clients.
Consider a typical use case of a person browsing the Internet by means of a browser.
The Web server in this example serves dynamic HTML pages using Java Server Pages
(JSP) technology. In addition, it uses Enterprise Java Bean (EJB) or Plain-Old-Java-Object
(POJO). JSP is oriented toward the delivery of webpages for the presentation layer. EJBs
or POJOs are usually used for processing business rules. There are thousands of Web
applications that use Java/JEE technology.
Figure 1-4
Man-machine interaction
The Internet architecture was originally designed for human users. HTTP protocol was for
exchanging documents (Web or HTML pages). HTML was designed for basic graphical
