JavaScript Programming for the Absolute Beginner

JavaScript is a scripting language developed by Netscape to enable Web authors to design interactive sites. JavaScript can interact with HTML source code, enabling Web authors to spice up their sites with dynamic content. JavaScript Programming for the Absolute Beginner not only teaches you JavaScript, a great programming gateway language, it will teach you the fundamental programming concepts you need to grasp in order to learn any computer language. It also uses game creation as a learning tool. You will learn how to program in JavaScript and produce something at the same time! Plus, the accompanying CD will contain games that you can cut and paste right into your own Web site! This book is perfect for anyone looking for an easy, non-intimidating introduction to JavaScript and general programming concepts.

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Java DataBase Programming With Jdbc

The Java Database Connectivity ( JDBC ) specification is a new basis for developers to interface with data sources. The structure of the JDBC is designed to allow developers to program for a standard interface, and let the low-level JDBC driver for different databases deal with the connection and querying of the databases; hence, the developer does not need to worry about dealing with different SQL flavors for each database. The JDBC is also very flexible—a developer doesn’t necessarily lose features specific to the target database. Best of all, the JDBC is based on the Java language!

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Java

About Java

Java technology is both a programming language and a platform independent.Java offers a much more reliable and predictable scheduling mechanism, memory handling methods, different memory models, a more predictable threading and synchronization model, asynchronous event handling, and high-resolution time handling. It makes predictable execution the first priority in all trade-off decisions, sometimes at the expense of typical general-purpose computing performance measures.



There are two principal products in the Java Platform, Standard Edition (Java SE, formerly known as J2SE) family:

1.Java SE Runtime Environment(JRE)

2.Java SE Development Kit (JDK).

The JRE provides the Java APIs, Java virtual machine, and other components necessary to run applets and applications written in the Java programming language. It is also the foundation for the technologies in the Java Platform, Enterprise Edition (Java EE) for enterprise software development and deployment. The JRE does not contain tools and utilities such as compilers or debuggers for developing applets and applications.

The Java Programming Language

In the Java programming language, all source code is first written in plain text files ending with the .java extension. Those source files are then compiled into .class files by the Java compiler (javac). A .class file does not contain code that is native to your processor; it instead contains bytecodes-- the machine language of the Java Virtual Machine. The Java launcher tool (java) then runs your application with an instance of the Java Virtual Machine.

The Java Platform

A platform is the hardware or software environment in which a program runs.The Java platform has two components:

1.The Java Virtual Machine (JVM)

2.The Java Application Programming Interface (API)

The API is a large collection of ready-made software components that provide many useful capabilities, such as graphical user interface (GUI) widgets. It is grouped into libraries of related classes and interfaces; these libraries are known as packages.JVM is a stack machine,this makes it simple to generate JVM code, and makes the JVM code compact.The JVM converts the class files into the bytecodes.

J2EE

About J2EE

J2EE is the industry standard for developing portable, robust, scalable and secure server-side Java applications. Building on the solid foundation of Java SE, Java EE provides web services, component model, management, and communications APIs that make it the industry standard for implementing enterprise class service-oriented architecture (SOA) and web 2.0 applications.

Java EE Web Application Technologies

1.Java Platform, Enterprise Edition (Java EE)

Java Platform, Enterprise Edition (Java EE) is a set of coordinated technologies and practices that enable solutions for developing, deploying, and managing multi-tier, server-centric applications. Building on Java Platform, Standard Edition (Java SE), Java EE adds the capabilities that provide a complete, stable, secure, and fast Java platform for the enterprise. Java EE significantly reduces the cost and complexity of developing and deploying multi-tier solutions, resulting in services that can be rapidly deployed and easily enhanced.

2.JavaServer Pages Standard Tag Library

The JavaServer Pages Standard Tag Library (JSTL) encapsulates as simple tags the core functionality common to many Web applications. JSTL has support for common, structural tasks such as iteration and conditionals, tags for manipulating XML documents, internationalization tags, and SQL tags. It also provides a framework for integrating existing custom tags with JSTL tags.

3.Java Servlet

Java Servlet technology provides Web developers with a simple, consistent mechanism for extending the functionality of a Web server and for accessing existing business systems. A servlet can almost be thought of as an applet that runs on the server side--without a face. Java servlets make many Web applications possible.

4.JavaServer Faces

JavaServer Faces technology simplifies building user interfaces for JavaServer applications. Developers of various skill levels can quickly build web applications by: assembling reusable UI components in a page; connecting these components to an application data source; and wiring client-generated events to server-side event handlers.

Java EE Enterprise Application Technologies

1.Enterprise JavaBeans 3.0

Enterprise JavaBeans (EJB) technology is the server-side component architecture for the Java 2 Platform, Enterprise Edition (J2EE) platform. EJB technology enables rapid and simplified development of distributed, transactional, secure and portable applications based on Java technology.

2.J2EE Connector Architeture

The J2EE Connector architecture provides a Java technology solution to the problem of connectivity between the many application servers and today's enterprise information systems (EIS).

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