Articles

Imagine cabinets in a storage room. Each of them has its own number, and each of them stores some Baggage object. Or a wine list where every kind of wine is numbered and you order by giving the number of your drink. Or a list of students in which "Adams" is recorded in the first position and "Zimmer" is last...

In Java, the static modifier means something is directly related to a class: if a field is static, then it belongs to the class; if a method is static, then it belongs to the class. As a result, you can use the class's name to call a static method or reference a static field...

OOP-related questions are an integral part of the technical interview for a Java developer position in an IT company. In this article, we will talk about one principle of OOP – polymorphism. We'll focus on the aspects that are often asked about during interviews, and also give a few examples for clarity...

Imagine that you're a knight stopped at a fork in the road. If you go left, you will lose your horse. If you go right, you will gain knowledge. How would we represent this situation in code? You probably already know that we use constructs like if-then and if-then-else to make these decisions...

Let's talk about programming with reference to the Newton's third law of motion. Programming is fun to learn. But what about the laws of Physics. This article is about doing programming with logical mind. Well everyone is logical to some extent. Newton's third law says, "If an object A exerts a force on object B..."

Hello everyone. In my previous article, I briefly described each pattern. In this article, I will try to show, in detail, how to use the patterns. Singleton. Description: Restricts the creation of a class to a single instance, and provides access to that single instance. The class's constructor is private...

This is a short article on design patterns in Java. There won't be any pattern implementations, just a list of patterns in Java along with a brief description of each. For those already familiar with the subject, this will be helpful as a review and summary. Conversely, those who are learning about patterns...

This article is about substring () methods in Java language. Here you will find the explanation of how using these methods, find out how they work and get some beneficial examples. Substring in general is a contiguous sequence of characters inside the String. It could be a part of the String or the whole String as well...

Regular expressions is a topic that programmers, even experienced ones, often postpone for later. But sooner or later, most Java developers have to process textual information. Most often, this means searching and editing text. Without regular expressions, effective and compact text-processing code is simply...

Everything is clear enough with "ordinary" human languages: in today's world, you need to have a good knowledge of your native language and English; the need to know any other language depends on your circumstances. The software development world has no universal language that we might call ...

Did you know that as soon as you cross CodeGym's 50-yard line (and you can actually get to this point very quickly) your teachers will invite you to complete some interesting mini-projects? Some of these tasks are described below. On Level 6 of the Java Multithreading quest, you'll write...

Skip Topic. Is there a way to skip some lessons and go straight to the some particular topic?