Introduction To Java Programming Language

Java is a high-level language developed by James Gosling and others at sun microsystems (a company which has since been acquired by Oracle Corporation in 2010) in 1992 to resolve the problems of portability means a program written on one machine can be run or execute on other machines without recompiling it. This is achieved by converting source code into bytecode then in machine code. Java compiler converts the source code into bytecode, then java virtual machine converts that bytecode into machine code. So that bytecode can be run on every computer where there is JVM exists regardless of any environment and we don't need to recompile the program. The second aspect of developing java was networking because internet also requires portability means one website should be run on any computer.

Java consists of several versions like J2SE (Java 2 Stand-Alone Edition) used to develop desktop applications and applets (the special type of programs which run in the browser's java virtual machine), J2EE (Java 2 Enterprise Edition) used to develop client-server and web-based applications, J2ME (Java 2 Mobile Edition) used to develop mobile and embedded applications.

Java is OOP-based language. OOP (Object-Oriented Programming) is the programming paradigm (programming methodology) consists of several features like Inheritance, Polymorphism and Encapsulation used to manage the complexity of large programs and provide the flexibility in the code and make the code reusable, manageable and modifiable.

Features Of OOP

Java remains the most popular programming language even after 20 years of its release and it was ranked at top position in the list of most popular programming languages by Tiobe in 2015 & 2016

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Introduction To Java Programming Language