Author: kpark

Why are the static variable considered evil?

https://stackoverflow.com/questions/7026507/why-are-static-variables-considered-evil%22

Global variables are bad

http://wiki.c2.com/?GlobalVariablesAreBad

Polymorphism (via overriding) vs Method Overriding vs Method Overloading

http://stackoverflow.com/questions/154577/polymorphism-vs-overriding-vs-overloading

Upcasting Downcasting Dynamic Binding

http://dis.dankook.ac.kr/lectures/java18/2018/05/06/upcasting-downcasting-dynamic-binding/

Object − objects have states and behaviors.
Class – defines the grouping of data and code, the “type” of an object
Instance – a specific allocation of a class
Message – sent to objects to make them act
Method – a “function” that an object knows how to perform
Local Variables − variables defined inside methods, constructors or blocks
Instance Variables – variables within a class but outside any method (a specific piece of data belonging to an object)
Class Variables − variables declared within a class, outside any method, with the static keyword
Encapsulation – keep implementation private and seperate from interface
Polymorphism – different objects, same interface
Inheritance – hierarchical organization, share code, customize or extend behaviors

java2-lab1

Lab1_1~ Lab1_5 프로젝트 디렉토리 안에 모든 파일(src/*.java & bin/*.class)와 보고서 (2~3장)를 넣고 Lab1_학번_이름.zip 압축한 후 e-learning (http://lms.dankook.ac.kr/index.jsp)으로 제출 (Due by 9/11)

Scanner 클래스, if/elseif, switch, do/while-loop

 

Java SE Development Kit Download 10.0.2
http://www.oracle.com/technetwork/java/javase/downloads/index.html

Eclipse Photon (eclipse-inst-win64.exe)
https://www.eclipse.org/downloads/