Node.js vs Java: What to Choose in 2023?

Oleg Dats
Co-Founder & CEO at TechMagic. Specialising in building remote dedicated teams skilled in JavaScript, AWS, Serverless.
Node.js vs Java: What to Choose in 2023?

Who wins the Node.js vs JavaScript battle? ✓ Let’s find out about the difference in development using Java and Node.js!

What is more relevant to use for app development today — Node.js or Java? Is there a big gap between them? What about Node.js vs. JavaScript differences? Let’s take an in-depth look into the main characteristics and purposes of these two languages. In this article, we dive into the specifics of Java vs. Node.js to see Nodejs vs Java advantages in programming.

node js vs java

Node.js overview

Node.js is a JavaScript code execution environment. It is based on Chrome V8 — a JavaScript engine that translates JavaScript calls into machine code. This is the difference between Node.js and JavaScript — the first is a running environment for the language called JavaScript.

Node.js appeared in 2009 when American developer Ryan Dahl created the Node.js platform. While the developers vastly exploited the principle of “one thread for each connection,” the new platform created by Dahl focused on events. The primary purpose of the system was to build scalable network servers.

Advantages of using Node.js

Node.js has become a stand-alone command-line tool that excels in building fast and scalable applications. It got approval among developers all over the world due to the following reasons:

  • Ability to use the same language on the client and server-side;
  • Speed of work;
  • The lightness of the system allows creating of lightweight applications;
  • The opportunity to use JavaScript syntax;
  • A Node package manager that you can use to install and search for packages;
  • Developers can utilize the same code for both the client and the server ends.
  • There are around 836,000 libraries available for Node.js projects, and almost 10,000 new libraries are launched weekly.
  • NodeJS does not need to convert between the binary models,
  • Scalable backend technology uses the lightweight Node.js framework.
  • Constant technology development (e.g., TypeScript is being developed now).

What is a better way to use Node.js?

This programming language has a vast range of uses. It is difficult to imagine a fast multi-user real-time data scenario without Node.js. Since both the front and back end can be created using Java, developers may use Node.js for both. Below we’ve listed several main areas where you may need Node.js app development company services:

  • Collectors and translators;
  • Batch processing and deferred processing scenarios;
  • Scripts, CLI (command-line interfaces);
  • Document generation delayed report generation;
  • Web Applications and SPA Servers;
  • Servers and APIs for mobile applications;
  • Message Servers and Event Broadcasting (Chats, Games, Interactive);
  • Patches on already prepared systems, written in other source languages;
  • Window applications (nw.js, Node-WebKit);
  • Crawlers, parsers, and data collection;
  • Microcontroller programming;
  • Industrial automation;
  • CMS, content publishing;
  • Mass e-commerce and trade.

Some top applications in their respective fields have either been created with Node.js or switched to it.


Node.js is used by Netflix to offer a speedy, lightweight, and modular application. Using Node.js, Netflix claims to have lowered app load times by roughly 70%.


Over 200 countries and 675 million people make up LinkedIn. The business social networking platform uses a server-side mobile app for Node.js. Compared to Ruby on Rails, Node.js offers superior speed, lower memory use, and quick processing capabilities.


Uber is a global leader in on-demand ride-hailing, with operations in over 900 cities and over 85 countries. Uber was the first business to use Node.js to develop its extensive matching system. Using backend technologies, Uber improved app performance, data processing, and operational effectiveness.


Java was first used in the creation of PayPal. However, NodeJS was chosen to power it since it enables users to transact quickly and easily. In addition, to Java vs Node js for backend technology, Node.js provides comprehensive support in 200 markets and over 100 currencies.

java vs nodejs

Java overview

Java is a strictly typified and object-oriented programming language. It was created in 1991 by Sun Microsystems engineers, Patrick Naughton and James Gosling. At the time, this language was called Oak. Now, it’s the world’s most influential and widely used computer language.

Advantages of using Java

Java is a high-level programming language that excels at solving general problems of any type. Even though there are more and more technologies appearing, Java still has a number of benefits to outrun the competitors:

  • Object-oriented programming allows you to reuse objects in other programs.
  • Java is a high-level language with simple syntax and smooth learning curves that make writing, reading, and maintenance easier.
  • Java supports many libraries, so many hosting providers support this language. You can also work with it from any computer.
  • There are no pointers in Java, and there is a Security Manager that allows you to specify access rules.
  • You can create a Java application on Windows, compile it into byte code and run it on any other platform that supports a Java Virtual Machine (JVM).
  • Automatic Storage Management is presented by a special system called a garbage collector. It finds and deletes objects that are no longer in use.
  • Multithreading. Threads are independent of each other: one thread does not affect the work of other threads.

What is a better way to use Java?

With all its positive features, Java is very widely used. At the same time, it is almost invisible in use. Below you will find some areas where you can use Java:

  • Android applications
  • Server applications in financial services
  • Web applications
  • Software tools
  • Trading applications
  • J2ME applications
  • Embedded systems
  • Big Data
  • High-frequency trading spaces
  • Scientific applications

Which companies use Java?

One of the most well-liked programming languages among the various backend technologies continues to be Java. Some well-known apps created with Java are listed below:


Twitter's microblogging features are well-known. Java is used in the social networking platform's development. To create Android apps and streamline usage and activities, Twitter has used Java.


One of the top music streaming platform apps is Spotify. Users can stream music from any artists, tracks, or albums thanks to the firm. This well-known program makes use of several languages, including Java. The development process is greatly streamlined and simplified thanks to Java.

Mini Opera

Due to its rapid information retrieval capabilities, Opera Mini is one of the most popular Java programs. Even with a sluggish Internet connection, the application's small weight enables users to access the Internet more quickly. To improve user experience, it compresses unneeded visuals.

Node.js will replace Java in 2023?

Java and Node.js are excellent programming languages with distinctive elements. Each of them has advantages and disadvantages that software engineers consider carefully throughout creation, and they will undoubtedly continue to be well-liked in the future. The adoption of Node.js by developers and the deployment of its applications in actual projects will determine whether Java is replaced or not.

The key differences between Node.js and Java

Below is a comparative table of Node.js vs. Java to demonstrate their distinctions more clearly.

Comparison factors Node.js Java
Definition A server platform for working with JavaScript. A programming language and platform.
Productivity and resource consumption Node.js performance vs. Java is lower, but is lightweight and can be used to maintain lightweight tasks. Along with high performance, it requires a lot of memory.
Flow control Uses two types of threads: the main thread processed by the event loop, and several additional threads. You can create an application and run multiple threads while the load is being distributed.
Frameworks Express.js, Sails.js,, Partial.js, etc. Spring, Struts, JSF, Hibernate, Tapestry, etc.
Usage Cross-platform applications, web applications. The multifunctional language for complex corporate applications.
Runtime environment V8 engine from Google. Java virtual machine.

Java vs Node js performance

Nearly 58% less money is spent on development when using Node.js for applications, based on Netguru research. Additionally, it improves application performance by 50%. Node.js' event-driven architecture guarantees effective multitasking, which improves an application's speed. Furthermore, NodeJS makes use of the V8 Javascript engine. It works quickly and efficiently.

Given Nodejs vs Java, Node.js provides apps with better performance. The environment created by Node.js's asynchronous and non-blocking inheritance is perfect for carrying out the little operations without interfering with the application's main thread.

Node.js is capable of multitasking when it comes to performance. Additionally, because it was created using the fastest JavaScript engine on the market, it doesn't affect the server's speed. It can also manage the flow of massive amounts of data.

According to the report on Java vs Node js performance, the test clearly shows that Java is quicker. Because Java is statically typed, it can be built more quickly, with fewer mistakes, and with higher precision for specific systems. Additionally, Java's Just-In-Time (JIT) compiler works with the JVM to increase performance. Because of the rigid restrictions on writing and error handling, Java's predictable and robust workflow is especially useful for performance management, even with complex applications.

Comparing Node.js vs Java performance, Java delivers better and faster performance since it is written as byte codes. The virtual machines translate the byte-code instructions to provide effective operations. A just-in-time compiler has also been added to Java to provide high-performance features for applications.

Java employs compilers, which makes it slower than native languages. Additionally, even though its trash collection function might be beneficial in some circumstances, it takes up a lot of memory. Contrarily, Node.js-based apps never buffer, allowing for speedier runtime and chunked data output.


At the end of our comparison of the two programming languages — Node.js and Java, we can note that each has its advantages and disadvantages.

Java is an older, universal language, but at the same time, it is more complicated than Node.js. Regarding Node js performance vs Java, we can say that not very high performance of single-threaded Node.js is compensated by speed and lightness.

Node.js tends to do better overall than Java when it comes to speed, thanks to its absence of buffering and distinctive code execution, according to benchmarks comparing the two languages. Comparing Java vs Nodejs, two of them have built-in scalability capabilities. Node.js APIs often change compared to Java's more stringent stability mechanisms. Vulnerabilities follow a similar pattern, and Java was designed with stronger security in mind.

Great communities, distinctive libraries, and resources for beginners and experts are present in both technologies. The benefits and drawbacks of each programming language, Node js vs Java point to its applicability for real-time applications, streaming, Android apps, large data projects, and online shopping. Java performs best in online applications, scientific software, trading software, and e-commerce.

As a JavaScript software development company, TechMagic offers high-quality services for backend and frontend development using Node.js.


  1. Why is Node.js better than Java?

    Node js uses an asynchronous event-driven I/O mechanism and does not have the Java runtime environment overhead, making it faster than Java. The wide ecosystem of modules and frameworks enables the creation of web apps faster and more efficiently.

  2. Is Node JS easy to learn for developers?

    Node JS has many tutorials and a large community that assist developers in learning that programming language.

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