Java vs JavaScript: Head-to-Head Comparison

Published: October 11, 2023

Hey there, fellow programmers! Are you ready to dive into the world of Java and JavaScript? In this guide, we’ll explore the fascinating background of these two programming languages, examine their similarities and differences, and evaluate their current trends in the past 12 months.

Java, created in the mid-1990s by James Gosling and his team at Sun Microsystems (now owned by Oracle Corporation), has become one of the most popular programming languages in the world. On the other hand, JavaScript, developed in 1995 by Brendan Eich at Netscape Communications Corporation, has become the backbone of modern web development.

Java and JS Logo

In this guide, we’ll take a closer look at the evolution of Java and JavaScript, how they’ve been used over the years, and how they’ve influenced each other. We’ll use the term “Java vs JavaScript” to frame our discussion, as these two languages are often compared and contrasted in the programming community. 

Additionally, we’ll explore the current trends of both languages in the past 12 months using data from Google Trends to understand better their popularity and usage in today’s tech landscape.

Google Trends Data Screenshot Java vs JavaScript May 2022-23

According to Google Trends data, Java and JavaScript have remained consistently popular over the past year. However, there have been some fluctuations in their search interest over time. 

For instance, the search interest for Java peaked in May 2022, while the search interest for JavaScript peaked in September 2022. We’ll dive deeper into these trends and what they might mean for the future of these two programming languages.

What is Java?

Java is a high-level, object-oriented programming language popular among developers worldwide. Java’s syntax is similar to that of C and C++, making it easy for programmers to learn and use.

With its platform independence, security features, and robust libraries, Java has become famous for developing various applications, from web and mobile apps to enterprise software and games. Do check out our blog on what is Java for further in-depth insights.

4 Advantages of Java 

Before we answer the big question of Java or JavaScript, let’s explore the advantages of Java first.

  1. Platform independence: Java code can run on any platform that supports the Java Virtual Machine (JVM), making it highly portable and versatile.
  2. Security features: Java has built-in security features, such as automatic memory management and runtime type checking, which help prevent common programming errors and vulnerabilities.
  3. Extensive standard library: Java has a large standard library of pre-built classes and functions that can be used to quickly and efficiently develop complex applications.
  4. Object-oriented programming: Java’s object-oriented programming (OOP) model allows developers to write modular, reusable code that is easier to maintain and update over time.

If these advantages attract you, you must check out the best Java certification courses to upskill and maximize these benefits.

3 Disadvantages of Java 

In this journey to discover the better option in JavaScript vs Java, we shall also explore the not-so-good points of these languages. Below are those for Java.

  1. Performance: Java programs can sometimes be slower than programs written in other languages due in part to the overhead of the JVM and the interpreted nature of Java code.
  2. Memory consumption: Java applications can consume large amounts of memory due to the need to load the entire Java Virtual Machine into memory.
  3. Learning curve: Java’s syntax and features can be complex and challenging for beginners, leading to longer development times and higher learning costs for new developers.

What is JavaScript?

Ever wondered what is JavaScript? And why has it gained so much traction? It is a high-level, dynamic programming language used for creating interactive web pages and web-based applications. Today, JavaScript is one of the most widely used programming languages on the web. 

It is popular among front-end developers who use it to create engaging user interfaces and dynamic content. In addition, JavaScript’s syntax is similar to C and Java’s, making it easy for programmers to learn and use. 

Its flexibility, speed, and compatibility with other web technologies have made it a go-to choice for web developers.

4 Advantages of JavaScript

Moving on in the JS vs Java debate, let’s look at the advantages of JavaScript.

  1. Interactivity: JavaScript creates interactive website features, such as drop-down menus, form validation, and animations. These features can enhance user experience and engagement with a website.
  2. Client-side scripting: JavaScript code runs on the client side (i.e., in the user’s web browser), reducing the server resources required to process requests and responses.
  3. Large developer community: JavaScript has a large and active developer community, which has created a wealth of libraries, frameworks, and plugins that can be used to enhance the functionality and performance of JavaScript applications.
  4. Versatility: JavaScript can be used to develop a wide range of applications, from simple web scripts to complex web applications and mobile apps. It can also be integrated with other web technologies such as HTML, CSS, and Ajax, making it a powerful tool for web development.

If these benefits of JavaScript excite you and grab your attraction in this programming language, then we suggest you check out our guide on how to become a JavaScript developer to help you direct your interest.

3 Disadvantages of JavaScript 

And of course, time to look at the disadvantages of the same.

  1. Security concerns: JavaScript code runs on the client side, which can make it vulnerable to cross-site scripting (XSS) attacks and other security threats.
  2. Browser compatibility issues: JavaScript code may behave differently in different web browsers, making it difficult to ensure consistent behavior across all platforms.
  3. Performance limitations: JavaScript performance can be impacted by factors such as code complexity, hardware limitations, and browser performance. As a result, JavaScript may not be the best choice for developing complex, resource-intensive applications.

Java vs JavaScript – Head-on Comparison

Women holding question marks representation in hands for comparison depiction

Let us now explore the differences between Java and JavaScript. We have formulated these in tabular form to ensure a head-on comparison for each factor.

TypeCompiled programming languageInterpreted programming language
Memory managementManual memory management using pointersAutomatic memory management using garbage collection
PerformanceGenerally faster than JavaScriptGenerally slower than Java
UsageUsed for developing enterprise software, web applications, and Android mobile appsUsed for developing interactive web pages and web-based applications
SecurityBuilt-in security features, such as automatic memory management and runtime type checkingVulnerable to security threats such as cross-site scripting (XSS) attacks
Developer CommunityLarge and active developer communityLarge and active developer community
Browser compatibilityNot dependent on web browsersDependent on web browsers and may behave differently across platforms
Libraries and frameworksRich set of libraries and frameworks available for various purposesA large number of libraries and frameworks are available, particularly for front-end web development
DebuggingProvides powerful debugging tools and IDEs for debugging and troubleshooting codeDebugging can be challenging due to the dynamic nature of JavaScript
ScalabilityScalable and widely used for developing large-scale enterprise applicationsScaling for complex applications can be challenging and require additional tools and frameworks.
Mobile app developmentUsed for developing native Android mobile apps using Android StudioIt can be used for developing hybrid mobile apps using frameworks such as React Native
Language popularityRanked #2 in the TIOBE Index for programming language popularity as of May 2023Ranked #7 in the TIOBE Index for programming language popularity as of May 2023

Note that this table provides a general overview of some of the critical similarities and differences between Java and JavaScript. Still, additional factors may be needed depending on the specific use case and context. We shall cover those relevant to coding separately ahead.

How to Learn Java?

Monitor showing Java programming.

Having explored the Java and JavaScript differences, it’s time to look at how we can learn these languages individually. First, let’s see how we can master Java.

  1. Understand the basics
  2. Get familiar with the syntax
  3. Use online resources
  4. Practice Coding
  5. Join a community
  6. Read Java Documentation
  • Understand the basics: Before diving into more complex concepts, it’s essential to have a solid understanding of the basics of programming, such as variables, data types, and control structures.
  • Get familiar with the syntax: Java has a specific syntax and structure, so it’s important to get familiar with it. 
  • Use online resources: There are many online resources available for learning Java, such as tutorials, blogs, and forums. Take advantage of these resources to gain a deeper understanding of the language.
  • Practice coding: As with any programming language, the best way to learn Java is to practice coding and learn new coding skills. Start with simple programs and gradually work your way up to more complex projects.
  • Join a community: Joining a community of other Java developers can be a great way to learn from others and get feedback on your code.
  • Read Java documentation: The official Java documentation can be a valuable resource for learning about the language and its features. Be sure to reference it frequently as you learn and develop your skills.

By following these pointers and exploring how to become a Java developer guide, you can get started on your journey to learning Java and becoming proficient in this powerful and versatile programming language.

How to Learn JavaScript?

Finger pointing at JavaScript coding on a monitor

Now continuing with the differences between Java and JavaScript discussion, it’s time to explore the learning process for JavaScript as well.

  1. Start with basics
  2. Get familiar with structure and syntax
  3. Use online resources to learn more about JavaScript
  4. Practice Coding
  5. Join a community of JavaScript Developers
  6. Explore JavaScript documents 
  • Start with the basics: Understanding fundamental programming concepts is essential to learning any programming language. For example, for JavaScript, it’s important to understand variables, data types, and control structures, such as if/else statements and loops. 
  • Get familiar with the syntax and structure of the language: JavaScript has its own syntax and structure, so it’s important to spend time getting familiar with it. 
  • Use online resources to learn more about JavaScript: There are many online resources available for learning JavaScript, including tutorials, documentation, and online courses. 
  • Practice coding: Practice is critical to learning any programming language, and JavaScript is no exception. Starting by writing simple programs and gradually increasing the complexity of your will help you build confidence and proficiency in JavaScript.
  • Join a community of JavaScript developers: Joining a community of other JavaScript developers can be a great way to learn from others and get feedback on your code. You can find online communities through forums, social media groups, or other developer communities.
  • Explore JavaScript documents: Reading documentation can help you gain a deeper understanding of the language and its features. It can also be a valuable resource when you’re working on a specific project or trying to solve a problem. The official JavaScript documentation can be found on the Mozilla Developer Network website.

Who uses Java & JavaScript? 

Java Usage

  1. Java is widely used in enterprise applications like banking, finance, healthcare, and e-commerce.
  2. It’s also used in the development of Android mobile apps and server-side applications.

JavaScript Usage

  1. JavaScript is used extensively in web development, including front-end development, such as creating interactive user interfaces, and back-end development, such as building server-side applications. 
  2. It’s also used in the development of mobile apps and desktop applications, as well as in the creation of games and other interactive content.

Java Vs JavaScript Code

When understanding what is the difference between Java and JavaScript, discussing those arising due to code is an important area. Hence, we have made a Java Vs JavaScript Code comparison below.

SyntaxC-style syntaxC-style syntax
Data TypesStrongly typed with support for both primitives and objectsDynamically typed with support for primitives and objects
Object-OrientedFully object-oriented with support for classes and interfacesPrototypal inheritance with support for object literals
CompilationCompiled to bytecode for the Java Virtual Machine (JVM)Interpreted or Just-in-time (JIT) compiled
ThreadingSupports multithreadingSingle-threaded
Runtime EnvironmentRequires a Java Virtual Machine (JVM)It can run on any modern web browser

Java vs JavaScript - FAQs

Java vs Javascript Which Is Easier?

It’s difficult to say which language, Java or JavaScript, is easier to learn as it depends on prior experience. Java’s syntax and strong typing system can make it more challenging, while JavaScript’s forgiving syntax and ability to run on any modern web browser make it easier for beginners. 

Which Pays More, Java or Javascript?

As per Glassdoor, Java developers typically earn higher salaries($100,266) on average than JavaScript developers ($95,990) due to the complexity of enterprise-level applications. However, skilled JavaScript developers can still earn competitive salaries, especially in web development, where demand is high.

Are Java and Javascript the Same?

No, Java and JavaScript are not the same programming language. They have different syntax, uses, and capabilities. Java is used for large-scale enterprise applications and server-side web applications, while JavaScript is used for client-side web applications and front-end development.


So, there you have it, folks – the ultimate showdown of Java vs JavaScript. While Java may be the go-to choice for enterprise-level applications, JavaScript’s versatility and ease of use make it a popular option for web development.

 It really boils down to what you need for your specific project. But don’t worry; there are plenty of resources out there to help you learn and improve your coding skills, no matter which language you choose. So go ahead, pick your side in this programming crusade, and let’s see where the future takes you!