One of the most widely used programming languages, Java is used as the server-side language for most back-end development projects, including those involving big data and Android development. Java is also commonly used for desktop computing, other mobile computing, games, and numerical computing.

What is Java mainly used for?

Developers use Java to construct applications in laptops, data centres, game consoles, scientific supercomputers, cell phones, and other devices. Java is the world's third most popular programming language, after Python and C – according to the TIOBE index, which evaluates programming language popularity.

What is Java and why do I need it?

Java is a general-purpose programming language that is class-based and object-oriented. The programming language is structured in such a way that developers can write code anywhere and run it anywhere without worrying about the underlying computer architecture. It is also referred to as write once, run anywhere (WORA).