What Is The Difference Between JavaScript And Java? 

If you’re getting into coding, two common terms that you might see are ‘Java’ and ‘Javascript.’

Although these two terms might seem interchangeable, there are key differences between them, and it can be important for a developer to know which is which and how they differ. 

If you find yourself looking at these two terms and not understanding the difference, then you won’t be the first person!

That’s where we come in. In the article below, we’re going to give you a complete overview of both and how you can tell the difference between them.

We’ve also included a deeper exploration of what Javascript and Java are used for, as well as a short FAQ to answer any additional questions you may have around this issue. 

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Defining Java VS JavaScript

What is the Difference between Java an JavaScript

Let’s start off by defining the two terms. ‘Java’ is an OOP (Object-Oriented Programming) Language whilst JavaScript is an OOP script.

They are used for different purposes, for example, JavaScript is used to program browsers, whilst Java is used to make whole applications. 

The best way to picture this is to imagine Java as something that creates an App that you use, whilst JavaScript is used to program specific features of a web page.

We’re going to break them down in further detail below.


Java is an old platform and programming language that has since the expansion of the internet has been used to create websites with impressive interactive features. 

It was first introduced to the world by Sun Microsystems in 1995, and since then it has evolved into a staple for the programming world. 

It is the foundation on which on which many new creative applications have been built.

Chances are you’ve most likely come across applications that use Java.

Here are a few examples of how Java is used to make some of the most popular web applications around.


since its invention twitter has used Java as a basis for its well-coded interface.

By interface here, we mean all of the pages, all of the buttons, and animations that make Twitter such an accessible and polished social media platform.


‘Google’ no longer refers to just the search engine, and there are examples of Java being used all throughout the company.

For example, if you’ve ever used Gmail you’ll know that it there are many different tabs, buttons, and features that you’re able to navigate through.

Java is the foundation that has been used to create all of these great features. 

What Is Meant By An OOP Language?

Since Java is an OOP language, you might be wondering what exactly this means?

Without going too deep into the specifics of this, an OOP language is a language that arranges software design and data.

“Object,” here, is typically defined as a data field that can act in unique ways.

Java is an OOP language as it allows the creator to focus on objects and how they exist within the language, making it a perfect tool to build websites (or parts of websites) with lots of moving parts.


So now that you know a little about what Java is – how does it differ from JavaScript?

In short, JavaScript is a scripting or programming language (sometimes these are used synonymously), that allows the user to place complex elements on a web page.

Features such as updating feeds, animations, scrolling videos, and interactive maps all use JavaScript in order to function.

You can think of JavaScript as the top layer of a cake that makes up a website. Generally, websites are made up of HTML, which makes up the basic structure, CSS, which creates rules to add style, and JavaScript which allows you to create all of the dynamic, moving content on a web page.

Another good way to think of it is the final coat of paint that makes everything look and function great! 

Comparing Java And JavaScript

The two terms are different, but they do also have similarities, we’re going to break them down for you in a short list here:

  1. They both run on modern web browsers.
  2. They both function with OOP
  3. They both work with reusable libraries and frameworks.

Choosing Between Java And Javascript 

When considering which one to use for your specific project, there are a few things to keep in mind.

When choosing, the main thing you need to consider is the thing you’re looking to create.

If you want to make web applications, you’ll be able to do this with both, but generally, we would suggest taking a look at how large the application you want to make is.

For example, if you’re looking to make applications that are both small and uniquely interactive, JavaScript is going to be better suited.

This is because its code is lighter and runs client-side (meaning that the client’s server will host the processes), which will make everything run a lot faster.

Java is going to be better for more complex websites or entire applications, as its code is multithreaded. 

Final Thoughts

So there you have it – the two can be used to similar projects, but there are small differences between them.

Mixing up Java and JavaScript is common among those new to coding or creating websites and applications, but it’s important to know the differences between them.

As you learn how each works, you’re going to understand the distinctions, strengths, and weaknesses of both. 

We hope that this article has given you some insight into the differences between Java and JavaScript, and that you now feel a lot more confident about them.

Programming languages and scripts often have a lot of complexity, so we recommend going deep into them and researching further! 

Good luck!

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