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JAVA: A Beginner's Guide
|by Deepak Chandrasekaran|
Java is an object-oriented programming language developed by Sun Microsystems, a company best known for its high-end Unix workstations. Modeled after C++, the Java language was designed to be small, simple, and portable across platforms and operating systems, both at the source and at the binary level.
The Java language was developed at Sun Microsystems in 1991 as part of a research project to develop software for consumer electronics devices-television sets, VCRs, toasters, and the other sorts of machines you can buy at any department store. Java's goals at that time were to be small, fast, efficient, and easily portable to a wide range of hardware devices. It is those same goals that made Java an ideal language for distributing executable programs via the World Wide Web, and also a general-purpose programming language for developing programs that are easily usable and portable across different platforms. This is the major reason why Java is said to be the most successful platform independent language.
Java as a language has significant advantages over other languages and other programming environments that make it suitable for just about any programming task. Some of them are listed below:
Better Cousin of C, C++
Object Oriented Programming
Applets and Applications
An application is a standalone program that runs directly on the Java platform. A special kind of application known as a server serves and supports clients on a network. Examples of servers are Web servers, proxy servers, mail servers, and print servers. Another specialized program is a servlet. A servlet can almost be thought of as an applet that runs on the server side. Java Servlets are a popular choice for building interactive web applications, replacing the use of CGI scripts. Servlets are similar to applets in that they are runtime extensions of applications. Instead of working in browsers, though, servlets run within Java Web servers, configuring or tailoring the server.
Full implementation of the Java platform provides the essentials like objects, strings, threads, numbers, input and output, data structures, system properties, date and time. Both, low and high level security, including electronic signatures, public and private key management, access control, and certificates are provided by java platform. Networking management, Java Database Connectivity (JDBC), Remote Method Invocation (RMI) are some of the other features of Java. '
In my next article I will focus on the object oriented programming concepts. Java isn't all that tough as the various training institutes advertise. A good written matter on Java and lots of practice on your Java Development Toolkit (JDK) is all that you need to become a Java pro.
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