Java Grammar Summary - 1 Hour

"Are you still modifying your code every time you change the server address?" In professional practice, Development (Dev), Staging, and Production (Prod) environments are strictly separated. However, many developers still manually change variables within a single main.dart file, exposing themselves to the risk of deployment errors. This course covers a 'true professional-grade architecture' that allows you to switch environments instantly just by selecting a build target, without modifying a single line of code.

This is a comprehensive lecture on Kotlin grammar that can be learned in 1 hour.

Are you feeling the limits of designing complex real-world code? Drawing from my professional experience, I will personally pass on my know-how for designing robust business logic based on Clean Architecture and Kotlin.

A practical course where you build a production-level app from scratch. Learn how to develop scalable and maintainable apps by applying Clean Architecture and the MVVM pattern.

This lecture explains unit testing, UI testing, and integration testing methods in Flutter based on the official documentation.

This is a guide course on proper dependency injection in Flutter. It presents how to use DI utilizing the injectable package.

This course is designed for everyone starting Flutter to quickly learn the Flutter basics.

You can experience an example of implementing an app with clean architecture, including caching techniques using a local DB, CSV parsing, and custom drawing using Canvas.

You will learn how to write better, more maintainable code by applying clean architecture to your Flutter apps. This is a must-have course for intermediate and above level learners.

Jetpack Compose is Android's modern toolkit for building native UIs. Build apps quickly and vibrantly with less code, powerful tools, and intuitive Kotlin APIs.

If you have started Java development but feel overwhelmed when trying to solve a problem, it is time to study design patterns. I will explain 10 of the GoF design patterns that I personally use the most.

In this course, you will learn various methods for developing reactive and flexibly scalable Android apps by utilizing Kotlin and various Jetpack libraries widely used in the industry.

You will learn Flutter app development by building a public mask inventory app, applying the MVVM pattern (one of the most commonly used patterns in smartphone development), and adding features.

Master complex Flutter state management in just 3 hours.

This introductory Flutter course lets you code once for Android and iOS.

Learn “Effective Java,” the ultimate Java learning guide, more easily and completely. By taking this course, you can improve not only your Java programming knowledge and skills, but also your learning ability.

Learn Java programming language by solving 100 problems. The entire course consists of 5 parts. In Part 1 of this course, you will solve problems on the topics of environment settings, variables, data types, and operators.

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)

Build a scalable real-time event streaming order processing system using Spring Boot 3.x + Kotlin, establishing a Kafka cluster, and leveraging PostgreSQL CDC, Debezium Connect, and Apache Avro schemas.

Currently, Android can be developed using the Java and Kotlin languages. You can develop the same Android applications regardless of which language you use. This course covers most aspects of Android application development, from basics to advanced levels, and all code is written using the Kotlin language starting from the fundamentals. Furthermore, it utilizes Google's latest UI library, Material 3. This course primarily focuses on menus, Android application components, threads, and fragments within the overall Android curriculum, and more in-depth topics will be covered in the next course. Soft Campus will always strive to provide the latest lectures. Thank you.

This is a basic DFS lecture that explains the way a liberal arts major and working developer studied to get a job :) We have prepared a lecture where you can learn by solving problems yourself, with minimal boring theory lectures! After taking this lecture, you will be able to solve silver level DFS problems on your own according to Baekjoon standards.

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 how to set up multi-module projects from scratch using Kotlin and Spring Boot. It proceeds with a hands-on approach, covering everything from the basic concepts of modularization to Gradle configuration, managing dependencies between modules, and actual application development. If you are a beginner or intermediate developer looking to learn the fundamentals and practical application of multi-modules, please refer to this course.

Learn the process of application development/release/update all at once through the Android Brainwashing Classroom. Learn the basics of JAVA and learn the distribution and update process while actually building an Android app. Implement the core functions of In★Gram yourself through practice. You can get started even if you don't know programming.

This is an introductory Java course. It's easy.

Through the 25 patterns of OODP, you will learn various ways to design software in an object-oriented manner.

The Code Puzzle Clear Challenge is a 4-week intensive training course based on "Learn to Code 1" in Swift Playgrounds, designed to develop "computational thinking" by giving commands to make a computer move as intended. By solving puzzle missions in each session, participants naturally learn to break down problems into smaller steps (decomposition), recognize patterns to organize repetitive rules using for-loops or functions, and make logical judgments to change actions based on specific situations. Beyond simply finding the right answer, participants reach a level where they can explain and refine "why they solved it this way."

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

This course is for beginners who have started coding tests but are confused, wondering, “Am I just not good at this, or is there still more I need to learn?” Through easy problems, you will master input processing, strings, data structures, and basic mathematical concepts, while learning the right way to approach problems from the very first step.

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.

This course is a video lecture that systematically covers the core modern JavaScript syntax essential for learning React.js and Vue.js frontend development. It is structured to help you develop efficient coding skills through ES6+ syntax, latest features, and practical examples that can be directly applied to work and learning.

If you can master DB and programming, you should be more than halfway prepared for the information processing engineer exam. Let's take a look at the DB and programming parts, which are worth 45 to 55 points in the practical exam, and pass the written exam steadily.

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

IntelliJ IDEA Conf 2025 is an annual online conference hosted by JetBrains that provides valuable sessions for Java and Kotlin developers. It covers various topics including AI adoption, Spring Boot, Gradle, Kafka, database management, and also shares insights on cloud integration, secure coding, developer performance improvement, and advanced development techniques. This conference is open to both professional and beginner developers, offering opportunities to explore the latest technologies along with productivity tips for writing high-quality code faster.