It's so easy to understand because you're explaining it by changing each part one by one and comparing it with Java!

kimssun

We will refactor a web application built with Java + Spring Boot to Kotlin + Spring Boot and implement additional requirements. In the process, we will use Junit5, SQL, JPA, and Querydsl, and cover the pros and cons of various methods from the design and implementation perspectives.

lannstark

2026 새해 복 마🐴니 할인

Real-world! Developing a library management application with Kotlin and Spring Boot (Refactoring a Java project)

입문

초급

중급이상

코틀린

Kotlin

스프링부트

Spring Boot

자바

Java

Refactoring

스프링

Spring

Introduction and Preparation, Teaching Materials (PDF, PPT) Section

Preparing to Refactor the Library Management Application

Let's refactor the Java server into a Kotlin server!

Adding the first requirement - the book's field

Add a second requirement - Book loan status

Adding a third requirement - book statistics

Adding a fourth requirement - Querydsl

Last section