This course will help students understand Java classes in more detail and use them more naturally. This will lead to more object-oriented programming.

java

입문

초급

중급이상

자바

Java

객체지향 프로그래밍(Object-Oriented Programming, OOP)

Java: Understanding Classes and Object-Oriented Programming

Recently, when creating a Java project in Eclipse (2020-12), the module-info.java file, which is a feature added in Java 9, is being added. Some people may be experiencing errors because of this file.
This file is not used in this lecture, so if you do not create it when creating the project, you can code in the same environment as the lecture.
<img width="522px;" height="545px;" src="https://lh4.googleusercontent.com/VGTYOtyq0oeYToSHnXzbQfjDbtEmofOCuiEwh66lDH3ncHAzFYEIleTGT0IDn5TuC2lv61njZIXQhDcMfsz1NA2iV1w5OD3VLZNoek3fPHydgpBKO5woWVRnYO7qUGqu_Ch2tobgSU3WxQ"/>
On this screen, do not select [Finish], but select [Next].
On the second screen
<img width="544px;" height="568px;" src="https://lh5.googleusercontent.com/wIEmHwc9ujjgcTstW9PnspmkFh60PfeWJ_eVybIXf1jaq81NQX6pdphbrrGjjSu8DLydzxIzjPeA2Yxh6n_cNpnPMszYCOMxFPe20vsINwjMvxS1Lo079-XU3ghiLlGonPZTn8LXhyhtmA"/>
You can create the project by unchecking the Create module-info.java section at the bottom and clicking the [Finish] button.