Articles

A constructor in Java is a specific method used in object creation of a class. The constructor is invoked every time an object of the class is created. It can be used to assign values to the properties of the object at creation time. There can be multiple constructors...

Java Math class contains the methods required to do mathematical calculations. One of the very common calculations we need is finding the maximum of two numbers. For this task, java has introduced a java.lang.Math.max() method. There are a few key things to know about...

Swapping objects is one of the most popular actions in programming. It’s particularly useful in sorting. What happens in swapping is two variables exchanging their values. In this article, we learn how to swap objects in Java in two different cases. One is swapping...

As you should probably know by now, CodeGym’s philosophy when it comes to learning Java can be summarized as ‘practice comes first and foremost.’ Our course’s primary focus is to teach you coding skills that will be applicable...

append() is a Java method of StringBuilder and StringBuffer classes that appends some value to a current sequence. Even if you didn't know what the append () method is, you probably already used it implicitly. This happened when you concatenated...

Linear Search in Java has always been the go-to method to find an element in an array. It searches each element of the array sequentially and is extremely easy to implement. However, the shortcomings of Linear Search are obvious when the array in question...

Typecasting is the process of forcefully converting a value of one data type into a value of another data type. This is usually done with respect to the ASCII table, a character encoding standard for electronic communication. Every alphabet or symbol that can be entered digitally has a corresponding unique integer...

Here at CodeGym, we don’t just help you to learn how to code in Java from scratch. We also do all we can to support you with knowledge necessary to find a good Java Developer job...

If you look at some of the most highly-skilled and professional software developers out there, you will probably notice all of them have one thing in common. They are constantly learning something new, genuinely interested to know about...

Hello everyone in the CodeGym community! Today we're going to talk about code quality. Yes, dear friends. Nobody's perfect. Everyone realizes at some point that the code could be better...

Here at CodeGym, we don’t just help you to learn how to code in Java from scratch. We also do all we can to support you with knowledge necessary to find a good Java Developer job after you...

“A matrix is a collection of numbers arranged into a fixed number of rows and columns.” Usually these are real numbers. In general, matrices can contain complex numbers but for the sake of simplicity we will only use whole numbers here. Let’s have a look at what a matrix looks like...