##main JAVA SELF STUDY

Studying Book

"Java Programming easily learned through practice (Jkwon write)" start : finish : (expect to finish on 14 days delay --- >>> ) finished

Goal of study : Improve coding skill using Java programming language

/Anything can be added HERE:

notion , github stduying necessary

c language restudying necessary

search what to study next

fact study pre/re study necessary

more effective daily schedule program necessary - search or create

++ escape sequence \r and \n difference review

++ escape sequence \b error review

++ printformat %d and %f review ex) 0 filled printing //%e and %g review

++ DecimalFormat class review ex)# , 0 difference

++ Book "JPELP" p.70 - in case of reference type, not preclaiming field is okay?

++ self create equalsIgnoreCase method algorithm

++ math.pow (base, exponent)

++ float , double difference

++ sort algorithm : bubble sort

++ toString() method role and overriding --> Speciality of String class

++ Why not using "new" is okay when making String class instance

++ 'javax' package --> GUI programming ,Swing class ???

++ p.243 sorce code review with access prohibitied

++ if member variable of inhherited(child) class was changed, parent class's member variable can be changed?

++ upcasting downcasting review ((plus interface, abstract class))

++ 1) upcasting , downcasting 왜 사용하는지 -> 다형성 활용의 이점 + 예시 부모 클래스가 참조할 수 있는 영역 / 자식 클래스가 참조할 수 있는 영역 인터페이스 사용시, 매개변수의 다형성 ( 자동 타입 변환 발생 )

++ 2) Exception Handling try ~ catch throws throw

++ 3) jar file

++1) String class 메소드

++2) Collection Interface **

Notion && Github && tistory vs velog

++1) Integer 와 int

++2) heap memory out of error

++1) VocManager_checklist + VocManager2

++1) comparator order ways

++1) 12주차 자바 프로그래밍 수업 강의자료 파란 필기 부분

==1) getsource, getcommand

README FILE decorating stie reference