Java & JEE books Page13

The voodoo's Introduction JavaScript
JavaScript is a new scripting language which is being developed by Netscape. With JavaScript you can easily create interactive web-pages. This tutorial shows you what can be done with JavaScript - and more importantly how it is done. Many people believe that JavaScript is Java because of the similar names. This is not true though. I think it would go too far at the moment to show you all the differences - so just memorize that JavaScript is not Java. JavaScript organizes all elements on a web-page in a hierarchy. Every element is seen as a object. Each object can have certain properties and methods. With the help of JavaScript you can easily manipulate the objects. For this it is very important to understand the hierarchy of HTML-objects.
JavaScript Authoring Guide and Development
JavaScript is a compact, obj ect-based scripting language for developing client and server Internet applications. Netscape Navigator 2.0 interprets JavaScript statements embedded directly in an HTML page, and LiveWire enables you to create server-based applications similar to common gateway interface (CGI) programs. In a client application for Navigator, JavaScript statements embedded in an HTML page can recognize and respond to user events such as mouse clicks, form input, and page navigation. The JavaScript language resembles Java, but without Java's static typing and strong type checking. JavaScript supports most of Java's expression syntax and basic control flow constructs. In contrast to Java's compile-time system of classes built by declarations, JavaScript supports a run-time system based on a small number of data types representing numeric, Boolean, and string values. JavaScript has a simple instance-based object model that still provides significant capabilities.
The essential of the programming language- part-2
Java Programming Language Basics, finished with a simple network communications example using the Remote Method Invocation (RMI) application programming interface (API). The RMI example allows multiple client programs to communicate with the same server program without any explicit code to do this because the RMI API is built on sockets and threads. A socket is a software endpoint that establishes bi-directional communication between a server program and one or more client programs. The socket associates the server program with a specific hardware port on the machine where it runs so any client program anywhere in the network with a socket associated with that same port can communicate with the server program.
Servlets and JavaServer page 1.0
Servlets are Java technology's answer to CGI programming. They are programs that run on a Web server and build Web pages. Building Web pages on the fly is useful (and commonly done) for a number of reasons:
* The Web page is based on data submitted by the user. For example the results pages from search engines are generated this way, and programs that process orders for e-commerce sites do this as well.
* The data changes frequently. For example, a weather-report or news headlines page might build the page dynamically, perhaps returning a previously built page if it is still up to date.
* The Web page uses information from corporate databases or other such sources. For example, you would use this for making a Web page at an on-line store that lists current prices and number of items in stock.
Introduction to Java Beans
This tutorial will cover Bean basics and more. First, JavaBeans will be introduced: the importance of components, other component technologies and the structure of JavaBeans. A simple JavaBean will be made to show the possibilities of Beans. Before we can take a look at how JBuilder 2.0 supports the development of JavaBeans, it is preferred to look at some background theory of JavaBeans. This first part will focus on the JavaBeans definition. We will see what is necessary to define a Java class as a JavaBean. And because JavaBeans are a component model for Java, we will take a look at component technology in general, and the advantages of components.

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