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

Learn I/O, networking, reflection, and annotations in depth, from the basics to the practical level. Build a web application server (WAS) directly in Java.

This course provides an in-depth study of multithreading and concurrency, from basic principles to practical applications.

Learn Java generics and collection frameworks in depth with a focus on practical applications. Also learn the basics of data structures.

This book provides an in-depth study of various intermediate-level Java features necessary for practical work, using example code.

This is a video of the meetup that took place at 7pm on January 31st.

Easily learn the core concepts of Java object-oriented programming needed in practice through example code.

This is a Java course for those who are new to programming. You can easily learn Java by following along with the code.

This course will cover everything you need to know about Spring Boot for practical use.

You can utilize and complete the DB data access technology required for backend development. You can understand the principles and structure of Spring DB access technology and grow into a more in-depth backend developer.

You can understand and perfect the basics of DB data access technology required for backend development. You can understand the principles and structure of Spring DB access technology and grow into a more in-depth backend developer.

You will learn the core principles and advanced technologies of Spring in depth and be able to use Spring confidently.