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Top 10 Data Science and Machine Learning Courses, Certifications in 2021 - Best of Lot

If you work in the technology field today like you are a programmer or software engineer, then I am sure you have heard about terms like Data Science, Machine Learning, Deep Learning, Artificial Intelligence, etc. They are the latest technologies that are impacting every single sector, just like IT does it when it comes the first time. It doesn't matter if you are working for a bank or insurance sector, airspace, or defense, all fields were impacted by IT, and in the near future, they will be impacted by machine learning and artificial intelligence. That's why it's important to learn Data Science and Machine learning in 2021 and if you are looking for some good resources like courses and certification then you have come to the right place.

Difference between List and Set in Java [Answered]

List vs Set in Java
The main difference between List and Set is that List is an ordered Collection while Set is an unordered collection. Java collection framework offers several collection classes for various needs but all collections can be divided into broadly three categories: List, Set, and Map. All List, Set, and Map are defined as interfaces and then you have several implementations like ArrayList and Vector are the popular implementation of List interface, while HashSet is a popular implementation of the Set interface. 

Top 5 Free Kotlin Courses for Beginners to Learn Online in 2021 - Best of Lot

Hello guys, If you are in Android application development or server-side Java development then you might have heard about the Kotlin programming language, created by JetBrains, the company behind popular IDEs like IntelliJIDEA, PyCharm, and WebStorm. Kotlin is also Google's official language for developing Android apps. If you don't know what is Kotlin and why you should learn Kotlin then let me tell you that Kotlin is a matured programming language which offers a lot of benefit over traditional programming language like Java which is time tested in last 25 years. Kotlin is designed to solve pain points of Java programming language like verbose nature and boilerplate.

How HashSet works in Java [Explained]

Not many Java programmers know that HashSet is internally implemented using HashMap in Java, so if you know How HashMap works internally in Java, more likely you can figure out how HashSet works in Java. But, now a curious Java developer can question that, how come HashSet uses HashMap because you need a key-value pair to use with Map, while in HashSet we only store one object. Good question, isn't it? If you remember some functionality of the earlier class, then you know that HashMap allows duplicate values, and this property is exploited while implementing HashSet in Java.

When to use ArrayList vs LinkedList in Java? [Answered]

When to use ArrayList or LinkedList in Java is one of the most popular Java interview questions and also asked as a difference between ArrayList and LinkedList. Earlier, I have shared common Java collections interview questions and in this article, I will explain the difference between them. ArrayList and LinkedList are two popular concrete implementations of the List interface from Java's popular Collection framework. Being List implementation both ArrayList and LinkedList are ordered, the index-based and allows duplicate. Despite being from the same type of hierarchy there are a lot of differences between these two classes which makes them popular among Java interviewers.

Top 10 Free and Best Online Courses to Learn Data Structure and Algorithms in Java in 2021 - Best of Lot

Hello guys, In the past, I have shared a lot of useful resources like books and tutorials to learn Data Structure and Algorithms for both beginners and experienced programmers. I have also shared a lot of Data Structure and Algorithmic interview questions like this and their solutions in Java. Still, I have got continuously queries about excellent online courses to learn Data Structure and Algorithms in Java. Even though the topics are completely independent with the programming language, Java developer definitely likes the online courses which teach Data Structure and Algorithms in Java, and that's why my recent post about best algorithms courses, which includes algorithms courses from JavaScript and Python didn't impress my readers.