12 Frameworks Java Web Developers Should learn in 2021

Mar 12, 2018 · 9 min read
“long exposure photography of red and white lights” by PAUL SMITH on Unsplash

In today’s world, good knowledge of various frameworks is very important. They allow you to quickly develop both prototype and real projects. If you are working in the startup space then you are expected to whip something cool in no time and that’s where knowledge of framework excel.

It also helps you to get a better job and take your career to next level, if you are stuck somewhere working on boring jobs, like just starting and stopping the server, setting up some cron jobs, and replying to the same old emails maintaining legacy applications.

In this article, I have shared 12 useful frameworks related to Java development, mobile app development, web development, and Big Data. If you have another good framework which you think Java and web developers should learn in 2021, then feel free to share it in the comments.

1) Angular 2+

Since it’s a JavaScript library, You can include this on your HTML page using the <script> tag. It extends HTML attributes with Directives and binds data to HTML using Expressions.

Since Google is behind Angular, you can rest assured in terms of performance and regular updates. I strongly believe AngularJS is here for the long run, hence, investing time in it is completely justified. If you decide to learn Angular in 2021, then Angular - The Complete Guide from Udemy is a good starting point.

2) Node JS

Tye Node.js is an open-source, cross-platform JavaScript run-time environment for executing JavaScript code server-side. You can use Node.js to create dynamic web pages on the server side before you send them to the client.

This means you can develop a front to back, client-server application in JavaScript. I purchased The Complete Node.js Developer Course last month on Udemy’s $10 sale and I look forward to learning it in 2021.

3) Spring Boot

Even though I have tried Spring Boot, I have yet to learn many things, and that’s why it’s on my list of things to learn in 2021.

I have also bought the Spring Boot Masterclass, one of the best online courses to learn Spring Boot, from Udemy for just $10 last month, and I look forward to using that in 2021.

4) React

The web development world is divided between Angular and React and it’s up to you what you choose. Most of the time, it’s dictated by circumstances; for example, if you are working in a React-based project, then obviously, you need to learn React.

If you decide to learn to React in 2021, then the React.js: Getting Started course from Pluralsight is a good starting point.

5) Bootstrap

Bootstrap supports responsive web design, which means the layout of web pages adjusts dynamically depending upon the browser’s screen size.

In the world of mobile, BootStrap is leading the way with its mobile-first design philosophy, emphasizing a responsive design by default.

If you are a web developer and don’t know Bootstrap, 2021 is the right time to get started with it. Bootstrap 4 From Scratch is a good starting point for your Bootstrap journey in 2021.

6) jQuery

You can do animation, send HTTP requests, reload pages, and perform client-side validation by writing just a couple of lines of code.

If you decide to learn jQuery in 2021, then I suggest you take a look at this jQuery master class, a free online course from Udemy for learning jQuery.

7) Spring Security 5

The new version 5.0 of Spring security includes many bug fixes and a complete new OAuth 2.0 module. Even if you don’t know Spring Security, you should consider learning it in 2021, and there is no better way than joining Eugen Paraschiv’s Learn Spring Security MasterClass.

8) Apache Hadoop

It is designed to scale up from single servers to thousands of machines, each offering local computation and storage. It’s based upon the popular Map Reduce pattern and is key for developing a reliable, scalable, and distributed software computing application.

I have already enrolled in The Ultimate Hands-On Hadoop last month, and if you decide to learn Hadoop in 2021, you can join, too, on Udemy.

9. Apache Spark

You can use Spark for in-memory computing for ETL, machine learning, and data science workloads to Hadoop. I have already shortlisted the Apache Spark Fundamentals course from PluralSight to go through in 2021. If you are in the same boat, you can check out that course to get some inspiration

By the way, you would need a Pluralsight membership to join this course, which costs around $29 per month or $299 per year (14% discount). I highly recommend this subscription as it boosts your learning and as a programmer, you always need to learn new things. Alternatively, you can also use their 10-day-FREE-PASS to watch this course for FREE.

10) Cordova

It allows you to use standard web technologies — HTML5, CSS3, and JavaScript for cross-platform development, and one is of the hot technologies to learn in 2021.

If you’d like to learn Cordova in 2021, then please check out Build iOS & Android Apps with Angular and Cordova, one of the exciting courses for learning Cordova.

11) Firebase

If you are looking to move into the lucrative business of mobile application development in 2021, then learning Firebase is a very good idea, and Advanced iOS and Firebase: Rideshare is a good place to start.

12. Xamarin

It’s owned by Microsoft and quickly becoming popular for creating mobile apps for C, C++, and C# developers.

If you already know one of the C languages and you’re looking for a career in mobile app development, then I strongly suggest you learn Xamarin in 2021, and The Complete Xamarin Developer Course: iOS And Android! is a good course to start with.

That’s all about what to learn in 2021. These frameworks are in great demand, particularly Spring, Node.js, and AngularJS. Learning these frameworks will not only improve your chances of getting a job but also open many doors of opportunity.

Even if you are settled down in your job, keeping yourself up-to-date with the latest and greatest technologies is essential for your career growth.

So, I suggest you pick a couple of these frameworks and learn them in 2021. If you are a Java developer, then Apache Spark is a good choice, but if you are interested in a programming language rather than a framework or library, then Kotlin looks good in 2021.

P.S. — If you are not sure how to learn new technology like a programming language, framework, or a library in 2021 then please see my post about 10 ways to learn a new technology or programming language here.

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Written by


I am Java programmer, blogger, working on Java, J2EE, UNIX, FIX Protocol. I share Java tips on http://javarevisited.blogspot.com and http://java67.com


Elijah McClain, George Floyd, Eric Garner, Breonna Taylor, Ahmaud Arbery, Michael Brown, Oscar Grant, Atatiana Jefferson, Tamir Rice, Bettie Jones, Botham Jean


Written by


I am Java programmer, blogger, working on Java, J2EE, UNIX, FIX Protocol. I share Java tips on http://javarevisited.blogspot.com and http://java67.com


Elijah McClain, George Floyd, Eric Garner, Breonna Taylor, Ahmaud Arbery, Michael Brown, Oscar Grant, Atatiana Jefferson, Tamir Rice, Bettie Jones, Botham Jean

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