Articles

Hi! How many hours does it take to become a master at something? I have often heard something like: "To become a master at anything, you need to spend...

The “key” in HashMap (or any other Map) was called a key for a reason. You access the values in the HashMap by the key. The opposite isn’t true, you can’t obtain the key by value, because the values can be duplicated...

Getting the current working directory in Java means getting the path of the directory (folder) from where your program has launched. Normally, that means to get the path from the root folder to the folder where the program file has been placed. This is a common day to day problem...

If you are just starting to learn Java or are still thinking about which programming language to learn, this article is for you. Finding motivation is much easier when you know your end goal. In the vast world of IT, it is easy to become bewildered...

Being a programmer isn't easy. There is always something new to learn. And, as in any other endeavor, the most difficult thing is to start, to take the first step towards your goal. But since you're already here and reading this article...

The absolute value of a number is the equal to the number itself ignoring the sign. For example, the absolute of +5 is 5. Whereas, the absolute of -5 is also 5. What is Math.abs() method() in Java? The java.lang.Math class provides a static method Math.abs(parameter) to find the “absolute value” of the parameter...

What is the HashMap getOrDefault method in Java? “The getOrDefault method is used to return the available or the default value of the search key.” This method is available if you work with the HashMap class that is implemented by the Map...

What do you usually do to take a break from writing code or studying programming theory? Swipe through social media? Watch TV shows? Doing a workout? Everyone has their opinion...

Practice or theory? What's more important? Many people will naturally say that practice is more important. Like, practice until the sun goes down and you will be happy. I will dare to disagree with this...

Math class in Java contains a lot of mathematical functions. Trigonometric functions are among the most important functions for programming. One of these functions is Math.cos()...

Software development is a complex business process. This means that IT professionals need to speak the language of optimization, planning, and costing. An understanding of management concepts gives both employers and...

The Math class contains methods to work with mathematical functions. In this article, we are going to talk about the Math.exp() method in Java. It returns the number e raised to the power of a double value. What is an exponential function: a very short math introduction...