I Tried 20+ Kotlin Courses on Udemy - Here Are My Top 5 Recommendations for 2027

 Hello there, If you want to learn Kotlin and looking for the best online courses then you have come to the right place. Earlier, I have shared the best Java courses for beginners and the best Android Courses and today, I am going to share the best courses to learn Kotlin in 2027. You might have heard about Kotlin and how it's becoming the standard language to develop Android applications, but it's much more than that. If you don't know Kotlin, it's a relatively new programming language that makes programming for Android and Java easier. Ever since Google announced Kotlin as the official language for Android Development, I have received a lot of queries from my readers about whether Java developers should learn Kotlin now? 

I Tried 20+ JUnit, Mockito, and TDD Courses on Udemy - Here Are My Top 5 Recommendations for 2027

 Hello guys, if you want to learn Unit testing in Java and tools like JUnit, Mockito for test-driven development and looking for the best online Java testing courses, then you have come to the right place. Earlier, I have shared the best Java Programming courses, and today, we'll talk about JUnit and Unit testing, one of the critical skills for any Software developer. You may already know that JUnit and Mockito are two of the most popular testing libraries for Java applications, and you will find them in almost every Java application classpath. I often meet and work with Java developers who know Java well but haven't written a single unit test. 

I Tried 30+ Java Collections and Stream API Courses on Udemy - Here Are My Top 5 Recommendations for 2027

 Hello guys, If you have been programming in Java, then you know that Collections and Streams are two of the most important Java APIs. There is hardly any Java program I have written in my 15 years of professional Java development career where I have not used any classes from Collections and recently from Stream API. I strongly believe that every Java developer should have a good knowledge of both of them, and that's why I am writing this post. If you are new to Java, then you might be thinking about why they are so important? Well, they are important becuase they deal with data, and data is at the heart of every application and business. For example, if you create an application like Facebook, then where do you store your Users on memory?

I Tried 20+ Apache Spark Courses on Udemy - Here Are My Top 5 Recommendations for 2027

 Hello friends, we are here again today for another exciting topic to discuss. But, today we are not gonna discuss something which is related to Java or any other language or spring boot. Today we are gonna discuss something which is immensely practical and has the potential to land you very high paying jobs. Today we are gonna take a look at the best available Apache Spark courses online. Apache Spark is one of the most popular Big Data Framework and powering many companies Big Data processing. Earlier, I have shared the best courses to learn Hadoop and Big Data and many of you asked to share the best courses on Apache Spark so here we are with the best online courses to learn Apache Spark. 

I Tried 15+ Java Lambda and Stream API Courses on Udemy - Here Are My Top 5 Recommendations for 2027

 It's been more than 6 years since Java 8 was launched in March 2014 and many of you already thinking that Java 8 is now a legacy version but there are still so many Java developers out there who don't know how to code using new language features of Java 8 like lambdas, stream, and method reference. It's high time for all those programmers to learn and master Java 8 before their skill becomes outdated. After that, we already have a couple more Java releases like  Java 9, Java 10, Java 11, 12, 13, 14, 15, 17, and Java 21in the space of just 6 years apart but Java 8 is still the most used version, particularly when it comes to coding style.