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Top 5 Free Courses to Learn TypeScript in 2021 - Best of Lot

If you are interested in learning TypeScript or Angular, one of the popular JavaScript frameworks for developing front-end, which uses TypeScript, and looking for some resources like books, tutorials, and courses, then you have come to the right place. In this article, I am going to share some of the best, free TypeScript online courses you can use to learn this powerful programming language. For those who don't know TypeScript, it's a new dynamically typed programming language from Microsoft that augments JavaScript's programming syntax by adding some new features which help in object-oriented application development, particularly the introduction of Types.

Top 6 Online Course to learn Java 9, 10, 11,12 and 14 in 2021 - Best of Lot

Hello guys, even though Java 15 is available now, many developers are still on Java 8 and not really caught up with changes in Java 9, 10, 11, 12, 13, or Java 14. If you are also in the same boat and want to start with Java 9 features, then you have come to the right place. In this article, I am going to share some of the best online courses to learn changes in Java 9, 10, 11 and later add more courses for Java 12, 13, 14, and 15. These JDK releases are packed with some powerful features like modules, API enhancements like factory methods for an immutable list, set, and map, some changes on stream API and optional class, new features on process API, etc. 

Top 5 Free C++ Courses for Beginners to Learn Programming Online - Best of Lot

Hello, guys, you might know that C++ is one of the most popular and powerful object-oriented programming languages, and if you want to do low-level stuff, then it's the best language to start with. Most of the complex software like Operating Systems, Database Management Systems, and Powerful trading systems, are written in C++. While many of us have learned to program by using C and C++, let me honest with you; learning C++ is challenging, especially if you are coming from Python or Ruby background. There are many areas that are tough to grasp like pointers and memory management, but you will learn them slowly, and that's where these free C++ courses will help you.

How to solve NullPointerException in Java [Tips]

Hello Java programmers, if you want to learn what is NullPointerExcpeiton in Java and how to deal with ith then you have come to the right place. NullPointerException in Java is an unchecked Exception defined in java.lang package and comes when a member of an object either field or method is called on an object which is null. null is a keyword in Java that means nothing and the calling method on an object whose value is null will result in NullPointerException. Since the default value of Object is null, if you call any method or access any field on an Object which is not initialized will throw NullPointerException

Top 5 Computer Vision and OpenCV Courses to Learn in 2021 - Best of Lot

Hello guys, if you want to learn Computer Vision and OpenCV and looking for the best computer vision online courses from Udemy, Coursera, and Pluralsight then you have come to the right place. Earlier, I have shared the best online courses to learn Python, Data Science, and Machine Learning from Coursera and Udemy, and in this article, I am going to share the best online training courses to learn both Computer Vision and OpenCV. The list includes courses for both beginners and experienced programmer who wants to learn the advanced concept of Computer Vision and Open CV.  It's one of the most existing fields of Machine Learning and Artificial Intelligence and has uses across industries like object detection, self-driving cars, robotics, and much more.

How to check if a Number is Power of Two in Java? [Bitwise AND Example]

Hello guys, if you are thinking about how to check if a given number is a power of two without using an arithmetic operator like division then you have come to the right place. In Java, you can use bitwise operators like bitwise AND check if a given number if the power of two or if the given number is even or odd. In this Java Programming tutorial, you will learn how to check if the number is the Power of two using a bitwise operator. The main purpose of this program is to teach you how to use bit-wise operators like bitwise AND (&)  in Java. A number is said to be the power of two if all its prime factors are 2, but in the binary world, things work a little differently. 

Top 5 Free Online Courses to Learn Eclipse and JUnit for Beginners - Best of Lot

Both Eclipse and JUnit are two of the essential tools for Java Developers. Eclipse is a Java IDE, Integrated Development environment which allows you to code, run, and debug Java program from a single window. At the same time, JUnit is a unit testing library that will enable you to test your Java code automatically. You can write JUnit tests, and then you can run them automatically using Maven or Gradle plugin at build time. You can further automate your build using Jenkins, which means your Unit test will run continuously and automatically, reporting any break at the earlier possible opportunity.

How to reverse a String in place in Java - Example

One of the common Java coding interview questions is to write a program to reverse a String in place in Java, without using additional memory. You cannot use any library classes or methods like StringBuilder to solve this problem. This restriction is placed because StringBuilder and StringBuffer class define a reverse() method which can easily reverse the given String. Since the main objective of this question is to test the programming skill and coding logic of the candidate, there is no point in giving him the option to use the library method which can make this question trivial. Now, how do you solve this problem? If you are familiar with an array data structure then it would be easy for you. Since String is backed by a character array, you can use the same in-place algorithm we have used to reverse an array in place.

Top 5 Free Courses to Learn Ruby on Rails for Beginners in 2021 - Best of Lot

Hello guys, welcome to this post, here you will find some of the best free courses to learn Ruby programming language and Ruby on Rails framework online from Udemy. If you don't know what Ruby is and what is Rails framework, then let me tell you that it's one of the simplest programming languages with little to no syntax. If you are new to programming or never coded before, then also developing a Ruby application will be much more comfortable than choosing any other programming language like Python or Java. When it comes to developing web development, Ruby on Rails also makes your job easy by making several useful assumptions based upon convention, which means you can do more by writing less code.

Matrix Multiplication in Java using Scanner, Class, and Function [Example]

Hello guys, if you are looking for a matrix multiplication example in Java using the scanner for user input, and using class and object-oriented programming then you have come to the right place. In this Java tutorial, I will show you how to multiply matrix in Java using an array, scanner, and object-oriented programming. We will create a class to represent matrix and then define a multiplication method to multiply two matrics in Java. I first learned about matrix in class 12th and I first wrote the program to multiply two matrices on my first semester of engineering, so, when I thought about this program, It brings a lot of memories from the past. 

7 Free Selenium Testing Courses to Learn Online in 2021 - Best of Lot

Testing is an integral part of software development, and we have long been relied on manual testing by testers and QA professional to ship quality software and find bugs, but that's not sustainable anymore. There is an increased focus on automation testing nowadays, and Selenium is leading the way with its web drivers. If you don't know what selenium is, it's a free automation testing tool for web applications. It can work with different web browsers like Chrome, Firefox, Internet Explorer, Opera, and simulate human-like behavior. By using Selenium, you can programmatically interact with all the different elements on a webpage. You can click on them, input text, extract text, and so much more.

2 Ways to Find Factorial of an Integer Number in Java [Recursion + Iteration Solution]

Hello guys, if you are looking for a Java program to calculate factorial with and without recursion then you have come to the right place. Factorial is a common programming exercise that is great to learn to code and how to program. When I teach Java to new people, I often start with coding problems like prime numbers, Fibonacci series, and factorial because they help you to develop a coding sense and teach you how to write a program initially. In order to calculate factorial, you just need to know the factorial concepts from Mathematics, and rest I will explain this simple Java programming tutorial. 

Top 5 Free AWS Developer Associate Certification Courses in 2021 - Best of Lot

Hello guys, if you are preparing for the AWS Certified Developer Associate exam and looking for free online courses then you have come to the right place. In the past, I have shared the free online courses to prepare for AWS Cloud Practitioner and SysOps Administrator certifications and today I am going to share free online training courses to prepare for the prestigious AWS Developer Associate exam. The exam requires hands-on experience with AWS but that's not enough, you also need to prepare all the exam topics and that's where these online courses can help you. These are the best and completely free courses from websites like Udemy, Coursera, freeCodeCamp, and Youtube and you can use them to prepare for this prestigious AWS cloud certification.