Java programmer and thinking to learn some new programming languages to expand your knowledge and skill, but not sure which programming language is better for you then you have come to the right place. In this article, I'll share 3 programming languages Java developers should learn in 2024 and why they should learn them. There is no surprise that all of these programming languages are JVM-based programming languages but they all have different qualities that make them unique and useful for a certain task. Also, being a Polyglot developer is good quality and often valued high on interviews. It also expands your thinking because different programming languages have different features that make certain things really easy. Learning a new language gives you the experience and knowledge to compare the pros and cons of two programming languages, which essentially enable you to write better code. Most of the language I suggest Java developers learn is JVM-based because they are easy to learn for Java programmers.

They are related to Java in one or another way and that's why they help expand the mind of any Java developer. Here is my list of three programming languages Java developers should learn in 2024. You might be thinking that why I have included only 3 languages, why not more? Well, learning a new language is not that easy, it takes time and effort to learn a new programming language, and even if you can learn just one that would be more than enough. But, if you are very enthusiastic and need programming languages other than JVM ones, you can check my list of general-purpose programming languages every programmer should learn. So, without any further ado, here is my list of 3 programming languages Java developers should learn. There is no surprise that all of these languages are JVM-based languages and easy for a Java developer to pick. They will complement your Java development skill and will be new tools in your arsenal.

Kotlin was introduced in 2011 by JetBrains (maker of IntelliJ IDEA, PyCharm, and many other top IDEs) but not many programmers paid attention until Google announced it as the official language for Android Development in 2017 Google IO. Like Groovy and Scala, Kotlin also runs on the JVM and compiles down to Java bytecode; you can start tinkering with Kotlin in an existing Java or Android project and everything will work just fine. To start with, Kotlin Fundamentals is a decent course on Pluralsight. It covers all essential concepts in simple language and provides real-world examples to help you understand those concepts and apply them as per your need. If you like a book, then Kotilin in Action is something you can read. It's both easy to read and comprehensive enough to cover essential details. Scala has been around for quite some time now and when it first came it was touted as the best language to replace Java.

Well, that didn't happen especially after some functional programming features introduced in Java 8 like lambdas and stream, but, Scala is still the language to learn for Java developers. In the past couple of years, Scala has grown and many more companies and startups have started using it like Uber, Sony, Amazon, Autodesk, etc, which makes it one of the most sought skills. Popular Scala frameworks like Play, Akka, Spark are also helping companies to adopt Scala for web development and Big Data solutions, no surprise, that Scala developers are paid more than 120K USD on average. If you are looking for some exciting work and learn a functional programming language, then Scala should be your first choice and if you decide to learn Scala then Rock the JVM! Scala and Functional Programming for Beginners course on Udemy are perfect, to begin with. If you like the book then Scala for the Impatient from Cay S.Horstman is my recommended book.

I like his style and have read many of his books like Java SE 8 for the Impatient, Core Java 1 and 2, etc. Like others, this book also covers key concepts of Scala and helps you to get going in a quick time. I have explored the Groovy landscape since 2017 and from that experience, I can say that every Java developer should learn Groovy. It really complements Java programming with its concise syntax and powerful programming features like collection literals, def to define anything, multi-line strings. After learning Groovy I realized that what I can do in 50 lines of code. It seriously reduced the lines of code to do something when you compare with Java and the best part of Groovy is that it is Java. One reason for my learning groovy was the Spock framework, a descriptive and specification-based unit testing framework. It makes unit testing in Java much easier and also extends what JUnit offers.

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