A Taste of Scala for Busy Java Developers

This course teaches Rust, a programming language that allows anyone to create robust, efficient, high-performance software. It is ideal because it allows for low-level programming while also having a wealth of high-level language features.

Essential tool for developers. A 30-minute intro to Git, the de facto standard VCS.

Are you using Java, but are you still only using Java 8 syntax? Learn about the useful features newly added to Java 11 LTS and become a capable developer who can use Java more conveniently. The features introduced here can be used usefully in all 11 LTS, 17 LTS, and 21 LTS versions.

Study the Elm programming language guide to building front-end web apps with pure functional programming in just 3 hours.

Kotlin Programming Language, which you can learn by practicing with 76 examples. You have to develop in Kotlin starting tomorrow, but you don't have time to study the grammar? Let's quickly learn all the grammar of Kotlin with the examples provided in this lecture.

Through this lecture, you can learn about the characteristics and background of the Kotlin language, grammar and operation principles, usage examples, and things to be careful of when using Java and Kotlin together.

Even people who are studying Java for the first time can easily understand it. You'll learn Java through theory with rich explanations and hands-on practice.

Through this course, you will gain a deep understanding of clean code principles and be able to write clean code based on object-oriented thinking. This course is for anyone curious about clean code and object-orientation, and everyone who truly wants to write good code.

Develop a scalable order processing system with real-time event streaming capabilities using Spring Boot 3.x + Kotlin to build a Kafka cluster, leveraging PostgreSQL CDC, Debezium Connect, and Apache Avro schema.

By building Java Oracle Cloud Native applications, we plan to build ultra-fast applications with no network input load, with asynchronous processing, I/O processing, high-performance web applications, and application execution processing more than twice as fast with JIT compiler technology.

Non-majors and beginner developers can easily learn Java grammar. It is a method of learning grammar by analyzing examples.

JAVA is a programming language, just like the C language. JAVA can be used for web development and application development, and here we will learn JAVA before doing web development.

When you're doing backend development, at some point you face this dilemma. As services grow and traffic increases, there comes a moment when simple REST communication and CRUD structures feel limiting. I experienced the same problem in real-world work and went through many trials and errors between performance and structural complexity. The solution I chose in that process was NATS. Its simple configuration based on a single binary, ultra-low latency performance in microseconds, and the fact that it provides just the right amount of essential features for real work—from Pub/Sub to Queue Groups and JetStream—made it a very practical choice in actual service environments. This course is not about listing NATS features. Based on the problems I faced in real work, I explain with code and flow diagrams which situations led me to choose NATS, why, and how I designed the architecture. This is a course designed to help everyone—from those new to messaging systems, to backend developers preparing for jobs, to senior developers contemplating better architectures—understand distributed systems and grow to the next level.

Learn the essential modern Java technologies of Lambda, Stream, and functional programming with Java, from the basics to the practical level, in depth.

If you've studied the basics of grammar, you'll naturally want to make something, right? This lecture helps novice C++ programmers become proficient in object-oriented programming while creating simple games. We provide the 'minimum' code that allows you to start game programming on your own and teach you the know-how of object-oriented programming that you could not have mastered just by studying grammar. Have fun creating and quickly jump to the intermediate level and beyond!

Refactoring is one of the basic skills that a software engineer should have. This course is designed to explain and practice various code smells and refactoring techniques in a more practical way using IntelliJ and Java.

The TDD & Clean Code masterpiece lecture, recommended by many senior developers in Korea to junior developers for over a decade.

Handling media (video, audio) on the web is now easier than ever! Learn the MediaStream API and WebRTC by following along step by step.

A hands-on course where we build a pop and casual 2D tower defense game from scratch together using Unity 6 and C#

Spring AI + JPA + MySQL Premium Reservation Agent Backend Development with 'Autonomous Behavior' Beyond Chatbots to Agents: The Definitive Guide to Tool Calling and Prompt Engineering

This course is for those preparing for coding tests in Java. It covers the top 10 topics that are most frequently tested in coding tests. It is structured step by step from basic to intermediate problems linked to the topic, so if you follow it step by step, you will get good results.

Regardless of the field! This is a lecture that covers the core fundamentals that developers must know in practice in an easy + code-oriented way. I highly recommend this lecture to all junior developers and job seekers who want to grow.

What kinds of problems appear in coding tests these days? Solve “practical” problems yourself, reflecting the latest corporate coding test trends. We provide proven problems and solutions to effectively build your algorithm and problem-solving skills. (with Java)

This is a lecture for people who are starting development for the first time. It's about programming thinking, which should come before development languages or UI frameworks.

You can systematically learn stock trading automation using Python and the Interactive Brokers API, which holds the top spot in global market share.