Java

 What is Java ?

Java is a powerful programming language which is independent of platforms, meaning it can run on multiple computers and operating systems.

When a programmer writes a Java application, the compiled code (known as bytecode) runs on most operating systems (OS), including Windows, Linux and Mac OS. Java derives much of its syntax from the C and C++ programming languages.

It was developed in the mid-1990s by James A. Gosling, a former computer scientist with Sun Microsystems.

How it works

They produces applets (browser-run programs), which facilitate graphical user interface (GUI) and object interaction by Internet users. Prior to Java applets, Web pages were typically static and non-interactive. The applets have diminished in popularity with the release of competing products, such as Adobe Flash and Microsoft Silverlight.

The applets run in a Web browser with Java Virtual Machine (JVM), which translates Java bytecode into native processor instructions and allows indirect OS or platform program execution. JVM provides the majority of components needed to run bytecode, which is usually smaller than executable programs written through other programming languages. Bytecode cannot run if a system lacks required JVM.

The program development requires a Java software development kit (SDK) that typically includes a compiler, interpreter, documentation generator and other tools used to produce a complete application.

Development time may be accelerated through the use of integrated development environments (IDE) – such as JBuilder, Netbeans, Eclipse or JCreator. IDEs facilitate the development of GUIs, which include buttons, text boxes, panels, frames, scrollbars and other objects via drag-and-drop and point-and-click actions.

The programs are found in desktops, servers, mobile devices, smart cards and Blu-ray Discs (BD).

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