What is Java?

Nowadays, Java is the most widely used programming language for computer-based applications. Basically, Java is a class-based, object-oriented, and network-centric programming language that requires fewer dependencies for implementation.

Java was introduced in 1991, however, it is still the most popular language of the 20th century because of its unique qualities. The most important quality of java is its portability and platform independence. “Write once, Run anywhere” this phrase is famous for Java. Once you write a code on a computer notebook in java; you can easily move it from one platform to another platform.

The interpreter and compiler both are used during the implementation of java. “Javac” is a compiler and JVM (Java Virtual Machine) is a software-based interpreter, both are necessary for the complete implementation of a java-based program.

Moreover, java is considered the most reliable, fast, secure, and robust programming language among the other programming languages and is used for back-end development.

Features of java

Object-oriented: It is a purely class-based and object-oriented language that drives complex problems to simpler ones.

Concurrent: It can execute multiple statements simultaneously instead of back-to-back executions.

Platform independent: It works according to the logic of “Write once, run anywhere”. It means java can compile on multiple platforms.

Portability: The major reason for the widespread use of java is portability. We can easily move the code of Java from one device to another.

Network-centric: It is a network-centric language; therefore, it provides the facility of distributed computing. As it is developed for distributed environments.

Why Java?

Java is a purely class-based and object-oriented programming language as it provides modularity and makes complex problems easier. Java is less complex because it creates objects with classes and defines the behaviors and attributes within them. In java-based objects, data and behavior are encapsulated. Therefore, these objects can be reused within the code.

Moreover, the inheritance feature of java contributes to reducing the complexity of code because, in inheritance, different objects within a parent class are defined with common behaviors and attributes. Reusability of the code is really easy and convenient for the developers.

Applications of Java

Some important applications of java are given below:

Java applications for android

In Android applications, java plays a significant role. It is a multi-platform framework; therefore, applications that are built on java can be run across multiple devices.

Java application for business

It helps to develop enterprise software according to the business requirements. It can develop a small-scale application that leads to huge enterprise solutions. Java is constantly popular in the business community because it meets all the latest business demands.

Java applications for artificial intelligence

Java is the most suitable language for AI-based projects. The infrastructure of Java is highly embedded with the software of AI. Java provides a user-friendly environment, easy coding, and debugging. It brings ease and perfection to AI-based applications.


Java is a high-level object-oriented and platform-independent programming language, which is widely used for web-based applications. Initially, Java was designed to run a single embedded application on multiple platforms, and nowadays, it has become a platform-independent language with more advanced features. In this tutorial, we define the basic definition of java, important features of java, applications of java, and discuss the reason why java is a popular language.

About the author

Shehroz Azam

A Javascript Developer & Linux enthusiast with 4 years of industrial experience and proven know-how to combine creative and usability viewpoints resulting in world-class web applications. I have experience working with Vue, React & Node.js & currently working on article writing and video creation.