基礎しっかり！本気で始めるJava Part 3(下)：ソケットとファイルI/O

From TCP/IP to HTTP! This lecture is for those who lack basic network theory and want to understand major theories by memorizing them. You can do it!

Are you lost while learning web development? I'll help you find your own way. Even if you're not from a computer science background, you can understand how web service architecture works through a short 1-hour lecture.

This course is for those who want to develop packet analysis programs like Wireshark and various network solutions using the Npcap library.

This lecture guides those who have learned the basic course of network core theory by memorizing it to understand theories in more depth. It covers more in-depth theories such as NAT technology, the operating principle of Internet routers, load distribution system principles, and VPN technology principles. The goal of this lecture is also to finish it by memorizing it! You can do it!

This is a lecture for all non-major beginners who want to become computer science majors by memorizing broadly and shallowly. You can quickly learn what you can learn in essential computer science major subjects such as computer architecture and operating systems. Above all, you can finish it by memorizing it!

This is a C language programming course for those who want to become professional developers rather than hobbyists. I recommend it to those who want to learn by writing and reading and go down a sweet path!

This course covers topics for those who have completed basic studies of the C language, such as compiler theory, stack frame structure, multi-threading, virtual memory structure, security vulnerabilities, and secure coding. It is highly recommended for those who wish to become experts in the C/C++ field, or those who majored in CS or have similar skills!

This lecture covers how to properly implement a linked list-based linear data structure using C language. You can understand the structure of the DB as well as the linked list at once.

This is a course provided to those who have completed the course 'Learn broadly and superficially to become a computer science major' so that they can study the operating system in more depth.

We enable you to fundamentally understand and resolve issues where Hangeul appears broken on web pages or in databases, or files contain unknown characters.

We will help you memorize and finish the encryption technology responsible for the security of the Internet very easily. You can understand the structure and principles of various technologies such as SSL certificates, PKI technology, digital signatures, and public authentication systems.

It covers just two things properly: object-oriented programming and the JVM! Plus, it throws in linked-list-based linear data structures.

If you have studied the C language thoroughly and studied linear data structures, it is now time to experience the world of object-oriented programming with C++!

In this lecture, you will learn application-level protocol design techniques and how to develop a high-performance server based on IOCP!

Based on an understanding of Reflection and Annotations, it helps you clearly understand how the Spring framework operates!

For those aspiring to be Java-based Spring backend developers, to easily secure a job, we learn Java properly! Rigorously!

This lecture comprehensively organizes the content that would be good for those who want to get a job as a new Spring Java backend developer, especially those who are about to have an interview.

Anyone who is a C/C++ developer can get started. You can quickly learn MFC Windows programming by selecting only the core. We also provide a 1200-page textbook.

Secrets to Escaping Beginner Status Revealed! We'll properly teach you about Java multithreaded programming and synchronization techniques!

You will acquire the skills to develop a security system by learning how to intercept the process in which a specific application calls various API functions. ※Absolutely no abuse!!!

It covers just two things properly: object-oriented programming and the JVM! Plus, it throws in linked-list-based linear data structures.

For those aspiring to be Java-based Spring backend developers, to easily secure a job, we learn Java properly! Rigorously!

In this course, you will learn Kotlin syntax, how to safely convert Java projects to Kotlin, and how to code in a Kotlin-like manner. Learn Kotlin based on practical code and use it yourself to enjoy its advantages.

This course covers core computer science knowledge such as networking, multi-threading, and operating systems, and teaches MMORPG technology by building a game server from the ground up. It provides a comprehensive overview of the knowledge that a new server programmer should know, building a foundation that allows them to adapt to any project without feeling overwhelmed.

⚓Kubernetes (Docker Desktop, Nginx, Minio, Longhorn) 🙇‍♀️Still hesitating? 🙋‍♂️Just trust me and follow! I will make your skills ⭐another level.

Spring Data JPA goes beyond the limitations of the past and allows you to complete development with just an interface, without implementing classes in the repository, as if by magic. It also provides all the basic CRUD functions that have been developed repeatedly. We will share practical know-how on Spring Data JPA.

This course covers the essential knowledge that every 0.5 to 3-year C# application developer should have.

This is a course where you study core computer science knowledge such as networking/multithreading/operating systems and learn MMORPG technology by building a game server from scratch.

Experience the power of Type Safe SQL with jOOQ!

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

IntelliJ IDEA Conf 2025는 JetBrains에서 매년 주최하는 온라인 컨퍼런스로, Java와 Kotlin 개발 개발자를 위한 유익한 세션을 제공합니다. AI 도입, Spring Boot, Gradle, Kafka, 데이터베이스 관리 등 다양한 주제를 다루며, 클라우드 통합, 보안 코딩, 개발자 성능 향상 및 고급 개발 기법에 대한 인사이트도 공유됩니다. 이 컨퍼런스는 전문 개발자는 물론 초보 개발자도 참여가능하며, 더 빠르게 고품질의 코드를 작성할 수 있는 생산성 팁과 함께 최신 기술을 접할 수 있는 기회를 제공합니다.

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.

Have you ever had a hard time because you didn't understand IT infrastructure (server, network, storage, etc.) technology? Do you want to understand how IT infrastructure is structured and what technologies are applied? This is the only lecture in Korea that explains the various technologies that make up IT infrastructure!

This course proceeds in stages, similar to the actual work, by learning and applying the necessary knowledge while configuring the infrastructure.

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

Learn network programming from scratch, fully utilizing Python and ChatGPT. Rather than tedious conceptual explanations, the focus is on students directly writing network code through practical exercises and personally verifying how their written programs operate. You can acquire skills ranging from basic network practicals to network technologies applicable in real-world scenarios, and build deep understanding and proficiency through exercises dealing with various protocols and tools. Furthermore, by leveraging ChatGPT, students can have a memorable learning experience without feeling difficulty or boredom.

Learn Java-based data structures and algorithms, and grow into a competitive coding expert with practical problems!

This is a course where you create a mini RPG 2D game to learn 2D development techniques, and then learn the process of converting the completed game into a network game by transitioning it to Netcode for GameObject. It covers various essential tilemap functions for 2D games, and is designed to naturally help you learn clean code writing techniques that adhere to SOLID principles. Additionally, this is a lecture that builds the foundation for network games using the updated Netcode API in the latest Unity 6 version.

This is a full-stack hands-on course where you'll clone ChatGPT and implement everything from scratch. From Spring Boot server to React frontend! This isn't just a course where you follow along with code, but one that guides you to build a high-quality AI chatbot service through actual service deployment.

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.