Lessons

How long a software developer’s career can last? This is something the majority of people who are seriously considering being professional programmers can’t help but wonder. It’s a very natural question to ask when talking about such a demanding profession by all means. No one wants to invest years in learning a skill that will cease...

Contacting customer support If you encounter any difficulties while using CodeGym, you can always contact our customer support. The easiest way to do this is through the "Administration" section in the "Messages" section of the website. The separate section is for your convenience and privacy...

Programming for grown-ups Until recently, you only wrote programs on the CodeGym website. This was simple, convenient, and understandable. But you don't think that you will always do this, do you? It's time to start writing programs like an adult, just like real programmers. Somehow people were writing programs...

The history of the IDE, popular IDEs for Java The history of the IDE begins from the moment when programmers came up with the idea of combining 4 of the most commonly used software development tools: Text editor Compiler (or interpreter, depending on the language) Build...

Installing the plugin To make your life much easier, CodeGym created a special plugin for IntelliJ IDEA that lets you get tasks and submit them for verification in a couple of clicks. It's super convenient — you'll see for yourself right now. For now, the CodeGym plugin isn't included in the standard set...

Autocomplete (Tab) IntelliJ IDEA is a very smart development environment. Some people believe that it not just a great IDE for Java development, but the all-around best IDE in the world. Which, admittedly, is not far from the truth. For example, IntelliJ IDEA has this magnificent thing called auto-completion. IntelliJ IDEA parses...

Bug Programmers have their own slang, though many consider it to be technical jargon. In any case, you cannot avoid getting to know it. You need to dive into the detail. So let's dive in. One of the first words you will get to know is the word "bug", i.e. "insect". In the context...

Watch When execution of your program stops at a breakpoint or when you're stepping through one instruction at a time, you can look at the values of the variables known at the current location in the program. Let's write a program that fills a 10-element array with the numbers from 100 to 109. Example: IntelliJ...

Now that you've figured out how to work with one of the main development tools — the IDE (in our case, IntelliJ IDEA) — you can relax a bit. That's a joke. Of course, you won't be able to avoid doing some reading at home. This time, we advise you to read a couple of articles written by someone who is both a CodeGym graduate...

Did you know that before the final power lift and transition to Level 5, you need to relax a bit and watch a video from the "Do You Know?" series. This isn't just entertainment. It's part of the comprehensive curriculum developed by the pedagogical board at the secret CodeGym center. The video is dedicated to the technologies and progress achieved by mankind.