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Difference between Java and JavaScript

Once, the world of computer programming was uncommunicative and unfamiliar to people. Only a handful of people are said to be computer programmers with adequate coding skills. Today, many IT jobs demand a substantial understanding of the top programming languages.

Java and JavaScript are one of those languages. These two languages work differently. So, let us split it in this article to comprehend the difference between Java and JavaScript.

What is Java?

The creator of Java is James Gosling. It was developed at Sun Microsystems and officially released in May 1995. The purpose of creating Java is to have as little execution reliance as possible. It is a class-based, general-purpose, OOP language. Developers extensively use Java to create applications for laptops, game consoles, and cell phones because it is fast, dependable, and safe.

What is JavaScript?

The creator of JavaScript is Brendan Eich. He formed it in the year 1995. It facilitates the innovation of dynamic content, animating images, attractive web applications, and many more. JavaScript is functional on both the client and server-side of a web page. The languages like HTML and CSS form the structure and styles/designs of the web page. JavaScript delivers attractive elements to the web pages and apps that boost user engagement.

Application of Java

The applications of Java are as follows:

  1. Most of the applications in the world use Java, from mobile phones to business servers and computing platforms. Every big and small organization or company uses Java one way or the other.
  2. More than 3 billion mobile phones and about 125 million TV sets implement Java.

Application of JavaScript

The applications of JavaScript are as follows:

  1. JavaScript adds interactive behaviors to the web pages like disguising facts with the click of a button, color-changing buttons, zoom-in or zoom-out on an image, etc.
  2. Developers utilize many JavaScript frameworks that provide pre-written codes and programs to create web apps. Some popular frameworks of JavaScript are React, Angular, and Vue.

Difference between Java and JavaScript

The dissimilarities between Java and JavaScript are shown in the table below:

Java JavaScript
  1. It is an Object-Oriented Programming language that can run on any virtual machine or browser.
  2. The variables are declared first before using them in the program because Java is a strongly typed language. The checking of the variable type occurs during compile time.
  3. Java program has the file extension “.Java”. It translates the source code into byte codes that get executed by the Java Virtual Machine (JVM).
  4. It is a standalone language.
  5. It does a thread-based approach to concurrency.
  6. It supports multithreading.
  7. It has become slightly outdated and is in the bottom half of the top 10 programming list.
  1. It is an Object-Oriented Scripting language but runs only in browsers.
  2. JavaScript is a weakly typed language. Its syntax and rules are more relaxed compared to Java.
  3. JavaScript file has the file extension of ".js" It is not compiled but interpreted. Every browser has a JavaScript interpreter to execute the JavaScript code.
  4. It remains contained within a web page and gets embedded within its HTML content.
  5. It does an event-based approach to concurrency.
  6. It doesn’t support multi-threading.
  7. It is ruling the top position in the list of programming languages and is still popular among web and application developers.


Java and JavaScript are among the top programming languages used by developers all around the globe. This article depicts the differences between Java and JavaScript. James Gosling created Java in 1995, and Brendan Eich developed JavaScript in 1995. Java is a programming language, whereas JavaScript is a scripting language. Go through the table above to learn more about the differences between Java and JavaScript.