Introduction Of JAVA Programming Language
Java is a programming language which is used for developing so many applications and programs in present IT industry and for making android application . It is programming language in which we can write code in the form of classes something similarto classic C++ language. And it is purely an Object Oriented Programming Language. Java is a also a platform independent language i.e, we can write code in one OS . Java is a high-level, third generation programminf languages , like C,Fortran, Smaltalk,perl and many others.
The World Of Object Oriented Programming
The rate of change in computer languages is so rapid that the techniques and methods of yesterday have become obselute today. For example, the change in Java 1.0 to Java 2 took less than 2 years.
Meaning Of Object Oriented Languages (OOP.)
Object Oriented Programming Languages are a recent development to improvee the programming process. The Object Oriented Programming (OOP) is different from ordinary programming. Whereas in ordinary programming , the focus is given on the procedure followed by a computer too perform an action, in OOP the focus is on an object.e.g.,a dialog box on screen. This object can be programmed to perform certain actions, say to degin the priting. The object can then be copied and used in other programs, it needed.
OOP programming is event driven. An event is a message that causes a sub-program (or procedure) attached to the beject to respond.By adding objects to a blank form and then defining the procedures, the computer will respond when an object is selected This is a much simpler approach then using an ordinary language, with OOP it is faster, easier and cheaper to develope applications gor graphical user interface such as www, MS , windows etc.
Two main languages designed for OOP are as follow:
(a) Visual Basic
(b) Java 2
Visual Basic (VB) is derived from earlier language BASIC. VB is much different from Basic . For application, VBhas a faster subset known as VB script. This is a scripting language. VB script is embedded in HTML pages as a tag. A browser downloads the script into a www page, then the VB script engine compiler the script and runs it.
Importance Of Java For Internet And E-BUSINESS
With The advent of internet and web, Java became the forefront computer Language due to its portable programs . Since internet consits of a diverse and distributed world of a large variety of computers, operating system,and CPUs hence users like to run this portable programs. As the Java derives object oriented features of C++ (an appealing language to programs ); it is cohensive, logically consistent and a practical language . Thus Java is for internet programming as compared o C which is for system programming.
Java has a profound effect on internet. It is because Java expands the the universe of those objects that can move almost freely in cyberspace. In a network, the transmission of passive information and active programs are quite comon between Java. Java has opened the door to a new program called applet.An applet is application designed to be transmitted over the internet. It is executed by a Java compatibl web browser.
Java prorvies a high level security against risk of viral infection and millicious programs, that can gather private information such as credit and number, bank balance and password etc . This security is assumed by means of a firewall provided between network application and the computer of the buisness concern. The ability to download applets without harm and without breach of security mkes Java very important for internet and e-buisness requirements. This also helpsincreating portability and thus Java solution are easy and efficient.
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