What is the difference between Java and JavaScript?

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What is the difference between Java vs JavaScript? Many people think that as JavaScript has “Java” in its name they both are somehow related. While many coders groan at this coupling and many even feel that this naming confusion is just a part of a marketing gimmick, the history of these two popular programming languages did intersect for a very brief moment in time during the early days of Netscape.

If you are reading this article, you may be interested in a more useful explanation of these two popular languages, so let me compare these two programming languages.

If we go back 5 years, there will be simple comparisons like JavaScript language for purposes and JavaScript will be used to make interactive and animation in web applications. Now that JS has “increased”, the comparisons are much more complicated.


It is important to remember that Java and JavaScript are designed to achieve completely different benefits. Java was created as a programming language for the general purpose of creating standalone applications, whereas JavaScript is a programming language designed to interact with web technologies, i.e. HTML.

When it was released by Java Sun in 1991, it was actually used to process consumer electronics such as VCRs. Introduced JavaScript to use as the default client language with Java, which works rather than unified in the browser.

People who are new to the world of programming are often confused between Java and JavaScript. But the most common of them is the word “Java”. These two planning languages ​​have their advantages, similarities, and differences.

Both Java and JavaScript represent the same OOP language and share the same control structures with the operators. But if you read them one by one, you will know that they are completely different from each other. Despite these similarities, they are different in many ways.


Java is a programming language developed by James Gosling and developed by Sun Microsystems.Java programming language that was created by an accident. This is one of the highest goals of the language of 1995. Around 1992, James Goslin was working at Sun Lab. He along with his team was building a set-top box and which was started by “cleaning up” the C++ language and they all wound up with a new programming language called Java or at that period: Oak.

Java is the second most popular programming language and is very popular among web developers.

Java programming language is free from the concept of Pointer as adding pointers to the Java programming language would compromise security and robustness, making this programming language even more complex.
Nowadays, Java is used by 95 % of the enterprises as their primary programming language. It is much more than C and other programming languages. In one year, Java downloads a billion times.


Today, Java runs on over 1 billion as Google’s Android operating system uses Java APIs.Today’s internet is full of Java-enabled apps and Java thanks to the many apps that make everyday life easier. Java currently owns Oracle.

Java is an interactive language designed to give you a C ++ experience. However, it is much simpler and easier to use than C ++. Java was originally named OAK but later changed to Java. With its virtual machine platform, it allows you to create integrated systems that work on almost every platform. Use Java with many features and benefits that can be used to create applications that can run on a computer. It can be distributed between servers and clients on the network. It can be used on business servers and supercomputers on a wide variety of computer platforms. It can be used to make mobile applications, web and desktop applications, games, and more.


In the early days of the Internet, in the 1990s, Internet Explorer and Netscape Navigator were the two most popular web browsers used by the general public. In just ten days, Brendan Eich, an engineer at Netscape, Inc., was able to create a programming language that directs the computer to communicate with the user when it detects a user ‘s installation. He called the language “live script” and added it directly to the navigator.

This means that the browser literally translates user instructions; Code should not be compiled and no plugins required. Another programming language, Java, is almost simultaneously popular, although Java requires a different plug-in for this function. Netscape recognized this possibility and named it JavaScript. JavaScript did not stop in the early days of the Internet.


JavaScript is a lightweight programming language for the web used to make HTML and web pages interactive. Like most example languages, it supports event-driven, functional, essential, and programming styles. The use of a JavaScript web page allows the client state script to interact with the user and create dynamic pages. It was called LiveScript, but later Netscape changed its name to JavaScript.

Let’s take a look at their similarities from the idea of ​​developing a web application:

Major Similarities

Object-Oriental Programming (OOP). Each of these two languages ​​requires a developer to code the objects and their relationships.

In addition, it gives access to technologies such as inheritance, encryption, and polymorphism for both languages.

Front-end development. Both of these languages ​​can be used in aspects of Front-end development.

JavaScript can be embedded in HTML, which can be used as a framework or library; Java can be used as a Java applet.

Back-end development. Both languages ​​are used on the server-side. Java has long been used to launch back-end technologies such as Apache, Zebras, and WebSphere. Node.js has become a JavaScript-based server browser.

Let us take a closer look at the major differences between the two languages.

Difference between Java vs JavaScript

Java vs JavaScript

1. Support closures

Java :
Using java you can simulate closure by using an anonymous class

JavaScript :
JavaScript supports closures. With JavaScript, you can pass a function as an argument to another function

2. Language

Java :
Java is an object-oriented programming language

JavaScript :
JavaScript is an object-based scripting language

3. Browser

Java :
Java can run in any virtual machine (JVM) or browser

JavaScript :
JavaScript, on the other hand, runs only on the browser

4. Compilation

Java :
Java provides programmer full functionality and needs to be compiled

JavaScript :
JavaScript on the contrary has a limited number of commands and features.JavaScript is interpreted

5. Extension

Java :
The extension used by java is “.Java”

JavaScript :
The extension used by JavaScript is “.js “

6. Memory

Java :
Java programs use more memory

JavaScript :
JavaScript, on the other hand, is used in web pages, therefore it uses very less memory

7. Type

Java :
Java is a high level and strongly typed language

JavaScript :
Javascript is taken as a text-based, dynamic and weakly typed language

8. Learning

Java :
Java is complicated to understand

JavaScript :
Javascript on the other way easier to learn and execute than java

9. Execution

Java :
Any structural problem with java can be recognized and can be fixed before running the program

JavaScript :
Javascript debugging capabilities are dependant on its execution environment

10. Types of Objects

Java :
Objects of java are class-based

JavaScript :
Objects of JavaScript are prototype-based

11. Code

Java :
Uses Java bytecode to achieve platform independence

JavaScript :
Javascript directly runs on browser code written in Javascript is subject to a browser compatibility issue

12. Syntax

Java :
The syntax language of Java is similar to C++. Java programming is done in classes and objects

JavaScript :
Syntax language of JavaScript is similar to C. It’s naming conventions are similar to Java programming language

13. Scope

Java :
Java is independent programming using block-based scoping where variable goes out of scope once control comes out of a block

JavaScript :
Javascript is mostly used on web browsers, it relies on HTML And CSS.
It uses a function-based scoping


Java is widely used in credit card applications, Android applications, and desktop applications as well as business level applications. By comparison, JavaScript is primarily used to make the app’s web pages more efficient. It can be used as an alternative to Flash‌, although most web developers and program administrators will tell you that JavaScript is more popular and has more functionality than Flash. JavaScript can be used to do weird things like creating images in HTML.

In short, when it comes to how the language of each program is used, Java is generally used throughout the server development, while at the same time creating custom client scripts for functions such as JS authentication and interaction.

java and javascript

Java :

  • Used in Server-Side Technologies such as Apache, JBoss, Geronimo, GlassFish, etc
  • Big Data Analytics
  • General Purpose Programming of Hardware
  • Android Apps
  • Enterprise Software
  • Scientific Computing


JavaScript :

  • Used in Dynamic single-page apps (SPAs)
  • Used in Front end technologies such as jQuery, Angular JS, Backbone.Js, Ember.Js, ReactJS, etc.
  • Server-side technologies such as Node.js, MongoDB, Express.js.
  • Mobile application development using PhoneGap, React Native, etc.

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