173만명의 커뮤니티!! 함께 토론해봐요.
해결됨
그림으로 배우는 자바, 파트2: 객체지향!
정답 코드 입니다. public class PlayerTest { public static void main(String[] args) { // 점수 배열 생성 int[] points0 = { 10, 9, 9, 8 }; int[] points1 = { 9, 10, 9, 9 }; int[] points2 = { 10, 9, 10, 10 }; // 선수 객체 생성 Player p0 = new Player("Kim", points0); Player p1 = new Player("Lee", points1); Player p2 = new Player("Park", points2); // 객체 배열 만들기 Player[] players = { p0, p1, p2 }; // 선수별 총점 출력 for (int i = 0; i < players.length; i++) { players[i].printTotalPoints(); } } } class Player { // 필드 String name; // 이름 int[] points; // 점수 // 생성자 Player(String str, int[] arr) { name = str; points = arr; } // 메소드 void printTotalPoints() { /* 2. 형식 문자열을 만드세요. */ System.out.printf("%s -> %d점\n", name, totalPoints()); } int totalPoints() { int sum = 0; for(int i = 0; i < points.length; i++){ sum += points[i]; } return sum; } } 위의 코드에서 'totalPoints()'메소드를 안에있는 for문 조건식 i<points.length; 대신 점수 배열을 크키를 구하는데 저는 main메소드가 먼저 실행되는 것으로 알고 있어 points0 배열이 생성될 때 값도 대입했기 때문에 바로 크기를 알 수 있을 것으로 판단해 아래와 같이 points0.length 또는 points[i].length 를 사용하려고 했으나 불가능하였습니다. for(int i = 0; i < points0.length; i++){ sum += points[i]; } 혹시나 main 메소드 부터 실행되는 것이 아니라면 points변수에 static을 부여해 프로그램이 시작하자마자 점수 배열을 생성을 하고 point[i].length를 사용해봤으나 'illegal start of expression' 라며 잘못된 표현이라는 에러가 나왔습니다. static int[] points0 = { 10, 9, 9, 8 }; static int[] points1 = { 9, 10, 9, 9 }; static int[] points2 = { 10, 9, 10, 10 }; 위와 같은 방법으로 풀면 왜 에러가 나는지 궁금합니다!
하람
2023-02-22T12:06:43.269Z
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미해결
나도코딩의 자바 기본편 - 풀코스 (20시간)
강사님, 안녕하세요. 우선 많은 강의 내용 중 생기는 질문에 대해서 항상 친절하게 답변해주시는 점 감사드립니다. 😊 다름이 아니고 익명 클래스 (후반전) 에서 추상 클래스를 직접 상속받아서 객체 생성과 동시에 메서드를 오버라이드 하는 것과 객체 메서드로 반환받아 하는 것이 어떠한 기능적인 차이가 있는 것인지 궁금하여 여쭤봅니다! 개인적으로는 별도의 메서드로 객체를 반환 받는 형태가 직관적으로 와닿지 않아서 어렵게 느껴지는 듯 합니다. 단순히 코드의 유지보수나 가독성을 높이는 목적 때문에 추상 클래스의 메서드를 직접 상속받는 형태보다 익명클래스를 활용해 메서드로 객체를 반환받는 형식으로 하는걸까요?
흰머리오목눈이
2023-02-22T11:54:13.523Z
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해결됨
자바와 스프링 부트로 생애 최초 서버 만들기, 누구나 쉽게 개발부터 배포까지! [서버 개발 올인원 패키지]
기존에 인터넷을 보면 스프링과 스프링부트를 분리하여서 스프링 하기전에 스프링 부트를하라고 이야기도 하고, 기업에서 스프링은 어떤데 스프링부트는 이러하다 다른 기술스택이라는식의 영상과 글들을 접해왔는데요 스프링 강의인데 스프링 부트로 진행하시고 다른 강사님들도 그렇게 하시더라고요 여기서 궁금한게 스프링과 스프링부트는 구별하지 않아도 되는걸까요?(그냥 스프링과 스프링부트를 혼용해서 써도 되는건지) 스프링부트가 아닌 스프링은 어떻게 공부해야할까요? 기업에서는 스프링부트가 아닌 스프링을 더 선호하나요?
java JPA spring-boot mysql spring jpa aws
김준식
2023-02-22T09:11:06.509Z
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해결됨
자바 ORM 표준 JPA 프로그래밍 - 기본편
안녕하세요! 영한님 질문 드립니다. 질문 1) 만약 동일한 트랜잭션안에서 처음에 em.getReference() 를 사용하면 프록시 객체 를 반환하고, em.find() 를 사용해도 프록시 객체 를 반환한다. 반대의 경우 동일한 트랜잭션안에서 처음에 em.find() 를 사용하면 실제 엔티티 가 반환되고, em.getReference() 를 사용해도 실제 엔티티 를 반환한다. 제가 이해한게 맞을까요? 질문 2) em.getReference() 를 사용하여 프록시 객체를 조회한 프록시 객체도 결국 EntityManager 를 사용하여 조회한 것이기 때문에 영속성 컨텍스트에서 관리 되는 것 같은데 맞을까요? 감사합니다.^^
개발하는쿼카
2023-02-21T13:47:23.730Z
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미해결
스프링 시큐리티
안녕하세요 강의 내용을 따라 코딩을 했는데 순환 참조 문제가 생겨 문의 드립니다. securityConfig와 AppConfig 설정에서SecurityResourceService를 생성하면서 생긴 문제인데요. 깃허브에 강의 자료를 확인해보니 영상에서 설정한 로직과 securityConfig 로직이 많이 다르더라구요. 임시로 application.properties에 spring.main.allow-circular-references=true 설정 하여 구동은 되지만 해결방법을 찾지 못하여 강사님께 도움을 요청 드립니다..
spring-boot java spring-boot spring-security Spring Security
딩동0814
2023-02-21T13:25:15.222Z
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미해결
실전! 스프링 부트와 JPA 활용2 - API 개발과 성능 최적화
안녕하세요 강의에서는 페이징에 필요한 offset과 limit 값을 @RequestParam을 통해서 넘겨주는 것을 보았습니다. 그런데, 저는 현재 @RequestBody OrderSearchDto를 파라미터로 받아와 내부 필드인 멤버명이나 주문 상태를 검색조건으로 활용하고 있었습니다. 이런 경우에는 그냥 @RequestParam을 사용하지 않고, DTO에 offset과 limit 필드를 추가해서 검색과 페이징에 필요한 데이터를 OrderSearchDto 안에 한번에 받는것은 어떤지 궁금합니다. 보통 실무에서는 페이징에 필요한 값은 @RequestParam으로 받는 편인가요? 아니면 저의 발상처럼 OrderSearchDto 같은 DTO를 통해 @RequestBody로 받기도 하나요? 일반적인 관점에서 best practice가 따로 있는지 궁금합니다.
java spring jpa JPA spring-boot
이현준
2023-02-21T10:24:48.252Z
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스프링 시큐리티
현재 강의까지의 인증 로직을 보면 @Service @RequiredArgsConstructor public class CustomUserDetailsService implements UserDetailsService { private final UserRepository userRepository; @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { Account account = userRepository.findByUsername(username); if (account == null) { throw new UsernameNotFoundException("UsernameNotFoundException"); } List<GrantedAuthority> roles = new ArrayList<>(); roles.add(new SimpleGrantedAuthority(account.getRole())); AccountContext accountContext = new AccountContext(account, roles); return accountContext; } } useranme으로만 Account객체를 조회해서 이것이 null인지 아닌지로 사용자를 인증하는 로직으로 이해했습니다. 하지만 로그인 페이지에서 DB에 존재하는 username을 알맞게 입력하고 password는 틀리게 입력하면 인증단계에서 걸러지는걸 확인했습니다. 그렇다면 password까지 검증을 한다는 것인데.. 분명 인증로직으로만 봤을땐 username으로만 인증을 하는것 같았는데 password까지 검증될 수 있었던 이유가 무엇인가요.?
spring-boot Spring Security java spring-security spring-boot
조우현
2023-02-21T09:45:17.405Z
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미해결
C 프로그래밍 - 입문부터 게임 개발까지
#include<stdio.h> #include<time.h> #include<stdlib.h> /*10마리의 서로다른 동물 (각 카드 2장씩) 사용자로부터 2개의 입력값을 받아서 -> 같은 동물 찾으면 카드 뒤집기 모든 동물 쌍을 찾으면 게임 종료 총 실패 횟수 알려주기*/ int checkAnimal[4][5]; //뒤집혔는지 여부 확인 int arrayAnimal[4][5]; //카드 20장 - 4x5 const char* strAnimal[10]; //10개의 배열 => 캐릭터포인터 void initAnimalArray(); // 카드 배치 void initAnimalName(); // 동물 종류 void shuffleAnimal(); //카드 섞기 int getEmptyPosition(); //빈 공간 찾기 int conv_pos_x(int x); int conv_pos_y(int y); void printAnimals(); //동물 위치 출력 void printQuestion(); // 문제 출력 (카드지도) int foundAllAnimals(); int main(void) { srand(time(NULL)); initAnimalArray(); initAnimalName(); shuffleAnimal(); int failCount = 0; //실패 횟수 while (1) { int select1 = 0; //사용자가 선택한 처음 수 int select2 = 0; //사용자가 선택한 두번째 수 printAnimals(); //동물 위치 출력 printQuestion(); // 문제 출력 (카드지도) printf("뒤집을 카드 2개를 고르세요 : "); scanf_s("%d %d", &select1, &select2); if (select1 == select2) // 같은 카드 선택 시 무효 continue; //좌표에 해당하는 카드를 뒤집어보고 같은지 안같은지 확인 int firstSelect_x = conv_pos_x(select1); int firstSelect_y = conv_pos_y(select1); int secondSelect_x = conv_pos_x(select2); int secondSelect_y = conv_pos_y(select2); //정수좌표를 x,y로 변환 if (checkAnimal[firstSelect_x][firstSelect_y] == 0 && checkAnimal[secondSelect_x][secondSelect_y] == 0//카드가 뒤집히지 않앗는지 && arrayAnimal[firstSelect_x][firstSelect_y] == arrayAnimal[secondSelect_x][secondSelect_y])//두 동물이 같은지) { printf("\n\n빙고!! : %s 발견!!\n\n",strAnimal[arrayAnimal[firstSelect_x][firstSelect_y]]); checkAnimal[firstSelect_x][firstSelect_y] = 1; checkAnimal[secondSelect_x][secondSelect_y] = 1; } //다른 동물일 경우 else { printf("\n\n땡!!(틀렸습니다.. 혹은 이미 뒤집힌 카드입니다.)\n\n"); printf("%d : %s\n", select1, strAnimal[arrayAnimal[firstSelect_x][firstSelect_y]]); printf("%d : %s\n", select2, strAnimal[arrayAnimal[secondSelect_x][secondSelect_y]]); //틀린카드 알려주기 printf("\n\n"); failCount++; //실패횟수 +1 } //모든 동물을 찾았는지 여부. 1:참 , 0:거짓 if (foundAllAnimals() == 1) { printf("***축하합니다!총 %d번의 시도끝에 모든 동물을 다 찾았네요***\n",failCount); break; } } return 0; } void initAnimalArray() { for (int i = 0; i < 4; i++) { for (int j = 0; j < 5; j++) { arrayAnimal[i][j] = -1; } } } void initAnimalName() { strAnimal[0] = "강아지"; strAnimal[1] = "고양이"; strAnimal[2] = "토끼"; strAnimal[3] = "다람쥐"; strAnimal[4] = "햄스터"; strAnimal[5] = "청설모"; strAnimal[6] = "오리"; strAnimal[7] = "원숭이"; strAnimal[8] = "미어캣"; strAnimal[9] = "호랑이"; } void shuffleAnimal() { for(int i = 0; i<10; i++) { for (int j = 0; j < 2; j++) { int pos = getEmptyPosition(); int x = conv_pos_x(pos); int y = conv_pos_y(pos); arrayAnimal[x][y] = i; } } } int getEmptyPosition() { while (1) { int randPos = rand() % 20; //0-19사이의 랜덤 숫자 반환 int x = conv_pos_x(randPos); int y = conv_pos_y(randPos); if (arrayAnimal[x][y] == -1) //초기에 -1로 설정했기때문에 -1이면 비어있다는 뜻 { return randPos; //현재 위치 반환 } } return 0; } int conv_pos_x(int x) //5로 나눴을 때 몫 / { return x / 5; } int conv_pos_y(int y) //5로 나눴을 때 나머지 % { return y % 5; } void printAnimals() //동물 위치 출력 { printf("\n=====이건 비밀인데 몰래 보여드려요=====\n"); for (int i = 0; i < 4; i++) { for (int j = 0; j < 5; j++) { printf("%8s", strAnimal[arrayAnimal[i][j]]); } printf("\n"); } printf("\n=========================================\n"); } void printQuestion() // 문제 출력 (카드지도) { printf("\n\n(문제)\n"); int seq = 0; for (int i = 0; i < 4; i++) { for (int j = 0; j < 5; j++) { //카드를 뒤집어서 정답을 맞혔으면 '동물이름 if (checkAnimal[i][j] != 0) { printf("% 8s", strAnimal[arrayAnimal[i][j]]); } //아직 뒤집지 못했으면 (정답을 못맞혔으면) -> 뒷면 -> 위치를 나타내는 숫자 else { printf("%8d", seq++); } } printf("\n"); } } int foundAllAnimals() { for (int i = 0; i < 4; i++) { for (int j = 0; j < 5; j++) { if (checkAnimal[i][j] == 0) { return 0; } } } return 1;//모두 다 찾음 }
go9466
2023-02-21T09:28:38.074Z
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미해결
실전! 스프링 부트와 JPA 활용1 - 웹 애플리케이션 개발
저는 testdb 라고 안뜨고 url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37| 이렇게 나오는데, 같은 맥락인가요? --전체 콘솔-- /Library/Java/JavaVirtualMachines/jdk-17.0.5.jdk/Contents/Home/bin/java -ea -Didea.test.cyclic.buffer.size=1048576 -javaagent:/Applications/IntelliJ IDEA CE.app/Contents/lib/idea_rt.jar=54927:/Applications/IntelliJ IDEA CE.app/Contents/bin -Dfile.encoding=UTF-8 -classpath /Applications/IntelliJ IDEA CE.app/Contents/lib/idea_rt.jar:/Applications/IntelliJ IDEA CE.app/Contents/plugins/junit/lib/junit5-rt.jar:/Applications/IntelliJ IDEA CE.app/Contents/plugins/junit/lib/junit-rt.jar:/Users/hyoozo/Documents/study/jpashop/out/test/classes:/Users/hyoozo/Documents/study/jpashop/out/test/resources:/Users/hyoozo/Documents/study/jpashop/out/production/classes:/Users/hyoozo/Documents/study/jpashop/out/production/resources:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter-data-jpa/3.0.2/fc0dbe82effb33d3d89b4cf2ec6b7968ad2af558/spring-boot-starter-data-jpa-3.0.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter-thymeleaf/3.0.2/e79481a7c3984941b9f9c73271867e4fcb4c0cc5/spring-boot-starter-thymeleaf-3.0.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter-web/3.0.2/3f6a2cb4cb11bac3611f5a95e234589eb190dd29/spring-boot-starter-web-3.0.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-devtools/3.0.2/8e74cf503d8f8b66960ecf3780446c5750866aa6/spring-boot-devtools-3.0.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/com.github.gavlyukovskiy/p6spy-spring-boot-starter/1.5.6/495579c7fb01b005f19ec4d5188245c66de0937b/p6spy-spring-boot-starter-1.5.6.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.projectlombok/lombok/1.18.22/9c08ea24c6eb714e2d6170e8122c069a0ba9aacf/lombok-1.18.22.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.testng/testng/7.1.0/b0bcea778fb2899aeb4014c558babea8833d180a/testng-7.1.0.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter-test/3.0.2/167ec01ebb1d4d5f955aa25e027fe25336116925/spring-boot-starter-test-3.0.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.junit.vintage/junit-vintage-engine/5.9.2/53421816bde124a564a64ba005dcc0c8e66a9722/junit-vintage-engine-5.9.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter-aop/3.0.2/cfb3ff6a7f8d47c9703f140387f39a837b81ab52/spring-boot-starter-aop-3.0.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter-jdbc/3.0.2/662285456edce14301de88fc0ab4937643a51b50/spring-boot-starter-jdbc-3.0.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.hibernate.orm/hibernate-core/6.1.6.Final/e2ff7dfc50d16377da7bedbf48a0a2e9db30ac66/hibernate-core-6.1.6.Final.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.data/spring-data-jpa/3.0.1/96f4ea7c780b6c902f83f4fd3c98dffe3ac5fbec/spring-data-jpa-3.0.1.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework/spring-aspects/6.0.4/5baf7a2260278ca9748be9dd8278d6519ff2da00/spring-aspects-6.0.4.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter/3.0.2/a9426629b5a83ad64fbe4e1d24081cccf4cdab14/spring-boot-starter-3.0.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.thymeleaf/thymeleaf-spring6/3.1.1.RELEASE/deb52ef921a4ac5132fedb7ebfc2bc1dad4382b3/thymeleaf-spring6-3.1.1.RELEASE.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter-json/3.0.2/11b9a2903af9014696d2576605bb73e8bca6ee19/spring-boot-starter-json-3.0.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-starter-tomcat/3.0.2/4d50f0cdcb4b8f74221ae823dd77c18290473045/spring-boot-starter-tomcat-3.0.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework/spring-webmvc/6.0.4/84ee8a9107480c92186ef8216ba0e1dca6ee1665/spring-webmvc-6.0.4.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework/spring-web/6.0.4/de18e3e75a0e56534d9df5978bd2f43f950e1b4a/spring-web-6.0.4.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot-autoconfigure/3.0.2/42ad589ec930e05a2ed702a4940955ff97b16a8c/spring-boot-autoconfigure-3.0.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/spring-boot/3.0.2/69d2e0a07f7df180a4aacdc47c47a3db656857dc/spring-boot-3.0.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/com.github.gavlyukovskiy/datasource-decorator-spring-boot-autoconfigure/1.5.6/cac386fe9df77870133594f054ee32e5d08ab93d/datasource-decorator-spring-boot-autoconfigure-1.5.6.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/p6spy/p6spy/3.8.2/52299d9a1ec2bc2fb8b1a21cc12dfc1a7c033caf/p6spy-3.8.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/com.beust/jcommander/1.72/6375e521c1e11d6563d4f25a07ce124ccf8cd171/jcommander-1.72.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/com.google.inject/guice/4.1.0/faf9ee8ac09eafd1128091426dd367a8c0085d55/guice-4.1.0-no_aop.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.yaml/snakeyaml/1.33/2cd0a87ff7df953f810c344bdf2fe3340b954c69/snakeyaml-1.33.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.junit.jupiter/junit-jupiter/5.9.2/26c586fbe0ebd81b48c9f11f0d998124248697ae/junit-jupiter-5.9.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.springframework.boot/s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gradle/caches/modules-2/files-2.1/com.h2database/h2/2.1.214/d5c2005c9e3279201e12d4776c948578b16bf8b2/h2-2.1.214.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.glassfish.jaxb/jaxb-runtime/4.0.1/7abfa1ee788a8f090dc598c45876ef068731e72b/jaxb-runtime-4.0.1.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.jboss.logging/jboss-logging/3.5.0.Final/c19307cc11f28f5e2679347e633a3294d865334d/jboss-logging-3.5.0.Final.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.hibernate.common/hibernate-commons-annotations/6.0.2.Final/fa5a14ef3d2e5c3c99b53a4bef756a3268d69187/hibernate-commons-annotations-6.0.2.Final.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.jboss/jandex/2.4.2.Final/1e1c385990b258ff1a24c801e84aebbacf70eb39/jandex-2.4.2.Final.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/com.fasterxml/classmate/1.5.1/3fe0bed568c62df5e89f4f174c101eab25345b6c/classmate-1.5.1.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/jakarta.inject/jakarta.inject-api/2.0.0/46fc8560b6fd17b78396d88f39c1a730457671f0/jakarta.inject-api-2.0.0.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.antlr/antlr4-runtime/4.10.1/10839f875928f59c622d675091d51a43ea0dc5f7/antlr4-runtime-4.10.1.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.junit.jupiter/junit-jupiter-engine/5.9.2/572f7a553b53f83ee59cc045ce1c3772864ab76c/junit-jupiter-engine-5.9.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.objenesis/objenesis/3.2/7fadf57620c8b8abdf7519533e5527367cb51f09/objenesis-3.2.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.glassfish.jaxb/jaxb-core/4.0.1/b4707bb31dfcf54ae424b930741f0cd62d672af9/jaxb-core-4.0.1.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.eclipse.angus/angus-activation/1.0.0/f0ceddd49f92109fbfad9125e958f5bfd3f2aa1/angus-activation-1.0.0.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/org.glassfish.jaxb/txw2/4.0.1/797720dfe2e15504f6014fb82eb873051a653c75/txw2-4.0.1.jar:/Users/hyoozo/.gradle/caches/modules-2/files-2.1/com.sun.istack/istack-commons-runtime/4.1.1/9b3769c76235bc283b060da4fae2318c6d53f07e/istack-commons-runtime-4.1.1.jar com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit4 jpabook.jpashop.service.MemberServiceTest 01:50:34.324 [main] DEBUG org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Neither @ContextConfiguration nor @ContextHierarchy found for test class [MemberServiceTest]: using SpringBootContextLoader 01:50:34.335 [main] DEBUG org.springframework.test.context.support .AbstractContextLoader - Could not detect default resource locations for test class [jpabook.jpashop.service.MemberServiceTest]: no resource found for suffixes {-context.xml, Context.groovy}. 01:50:34.343 [main] INFO org.springframework.test.context.support .AnnotationConfigContextLoaderUtils - Could not detect default configuration classes for test class [jpabook.jpashop.service.MemberServiceTest]: MemberServiceTest does not declare any static, non-private, non-final, nested classes annotated with @Configuration. 01:50:34.451 [main] DEBUG org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Using ContextCustomizers for test class [MemberServiceTest]: [DisableObservabilityContextCustomizer, PropertyMappingContextCustomizer, Customizer, ExcludeFilterContextCustomizer, DuplicateJsonObjectContextCustomizer, MockitoContextCustomizer, TestRestTemplateContextCustomizer] 01:50:35.064 [main] DEBUG org.springframework.context.annotation.ClassPathScanningCandidateComponentProvider - Identified candidate component class: file [/Users/hyoozo/Documents/study/jpashop/out/production/classes/jpabook/jpashop/JpashopApplication.class] 01:50:35.067 [main] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Found @SpringBootConfiguration jpabook.jpashop.JpashopApplication for test class jpabook.jpashop.service.MemberServiceTest 01:50:35.509 [main] DEBUG org.springframework.boot.test.context.SpringBootTestContextBootstrapper - Using TestExecutionListeners for test class [MemberServiceTest]: [ServletTestExecutionListener, DirtiesContextBeforeModesTestExecutionListener, ApplicationEventsTestExecutionListener, MockitoTestExecutionListener, DependencyInjectionTestExecutionListener, DirtiesContextTestExecutionListener, TransactionalTestExecutionListener, SqlScriptsTestExecutionListener, EventPublishingTestExecutionListener, RestDocsTestExecutionListener, MockRestServiceServerResetTestExecutionListener, MockMvcPrintOnlyOnFailureTestExecutionListener, WebDriverTestExecutionListener, MockWebServiceServerTestExecutionListener, ResetMocksTestExecutionListener] 01:50:35.516 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved @ProfileValueSourceConfiguration [null] for test class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.522 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved ProfileValueSource type [class org.springframework.test.annotation.SystemProfileValueSource] for class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.529 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved @ProfileValueSourceConfiguration [null] for test class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.530 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved ProfileValueSource type [class org.springframework.test.annotation.SystemProfileValueSource] for class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.530 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved @ProfileValueSourceConfiguration [null] for test class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.530 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved ProfileValueSource type [class org.springframework.test.annotation.SystemProfileValueSource] for class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.555 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved @ProfileValueSourceConfiguration [null] for test class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.558 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved ProfileValueSource type [class org.springframework.test.annotation.SystemProfileValueSource] for class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.560 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved @ProfileValueSourceConfiguration [null] for test class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.561 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved ProfileValueSource type [class org.springframework.test.annotation.SystemProfileValueSource] for class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.562 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved @ProfileValueSourceConfiguration [null] for test class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.562 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved ProfileValueSource type [class org.springframework.test.annotation.SystemProfileValueSource] for class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.571 [main] DEBUG org.springframework.test.context.support .AbstractDirtiesContextTestExecutionListener - Before test class: class [MemberServiceTest], class annotated with @DirtiesContext [false] with mode [null] 01:50:35.573 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved @ProfileValueSourceConfiguration [null] for test class [jpabook.jpashop.service.MemberServiceTest] 01:50:35.574 [main] DEBUG org.springframework.test.annotation.ProfileValueUtils - Retrieved ProfileValueSource type [class org.springframework.test.annotation.SystemProfileValueSource] for class [jpabook.jpashop.service.MemberServiceTest] . ____ _ /\\ / ___'_ __ ( _)_ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v3.0.2) 2023-02-21T01:50:37.029+09:00 INFO 19303 --- [ main] j.jpashop.service.MemberServiceTest : Starting MemberServiceTest using Java 17.0.5 with PID 19303 (started by hyoozo in /Users/hyoozo/Documents/study/jpashop) 2023-02-21T01:50:37.037+09:00 INFO 19303 --- [ main] j.jpashop.service.MemberServiceTest : No active profile set, falling back to 1 default profile: "default" 2023-02-21T01:50:38.911+09:00 INFO 19303 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode. 2023-02-21T01:50:39.024+09:00 INFO 19303 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 44 ms. Found 0 JPA repository interfaces. 2023-02-21T01:50:40.264+09:00 INFO 19303 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting... 2023-02-21T01:50:40.752+09:00 INFO 19303 --- [ main] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Added connection conn0: url=jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37 user=SA 2023-02-21T01:50:40.754+09:00 INFO 19303 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed. 2023-02-21T01:50:40.845+09:00 INFO 19303 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default] 2023-02-21T01:50:40.970+09:00 INFO 19303 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 6.1.6.Final 2023-02-21T01:50:41.440+09:00 WARN 19303 --- [ main] org.hibernate.orm.deprecation : HHH90000021: Encountered deprecated setting [javax.persistence.sharedCache.mode], use [jakarta.persistence.sharedCache.mode] instead 2023-02-21T01:50:41.773+09:00 INFO 19303 --- [ main] SQL dialect : HHH000400: Using dialect: org.hibernate.dialect.H2Dialect 2023-02-21T01:50:42.396+09:00 INFO 19303 --- [ main] p6spy : 1676911842396|16|statement|connection 2|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|select from INFORMATION_SCHEMA.SEQUENCES|select from INFORMATION_SCHEMA.SEQUENCES 2023-02-21T01:50:43.895+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop table if exists category cascade 2023-02-21T01:50:43.897+09:00 INFO 19303 --- [ main] p6spy : 1676911843897|1|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists category cascade |drop table if exists category cascade 2023-02-21T01:50:43.898+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop table if exists category_item cascade 2023-02-21T01:50:43.899+09:00 INFO 19303 --- [ main] p6spy : 1676911843899|0|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists category_item cascade |drop table if exists category_item cascade 2023-02-21T01:50:43.899+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop table if exists delivery cascade 2023-02-21T01:50:43.899+09:00 INFO 19303 --- [ main] p6spy : 1676911843899|0|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists delivery cascade |drop table if exists delivery cascade 2023-02-21T01:50:43.900+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop table if exists item cascade 2023-02-21T01:50:43.901+09:00 INFO 19303 --- [ main] p6spy : 1676911843900|0|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists item cascade |drop table if exists item cascade 2023-02-21T01:50:43.901+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop table if exists member cascade 2023-02-21T01:50:43.902+09:00 INFO 19303 --- [ main] p6spy : 1676911843902|0|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists member cascade |drop table if exists member cascade 2023-02-21T01:50:43.902+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop table if exists order_item cascade 2023-02-21T01:50:43.902+09:00 INFO 19303 --- [ main] p6spy : 1676911843902|0|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists order_item cascade |drop table if exists order_item cascade 2023-02-21T01:50:43.903+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop table if exists orders cascade 2023-02-21T01:50:43.903+09:00 INFO 19303 --- [ main] p6spy : 1676911843903|0|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists orders cascade |drop table if exists orders cascade 2023-02-21T01:50:43.904+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop sequence if exists category_seq 2023-02-21T01:50:43.905+09:00 INFO 19303 --- [ main] p6spy : 1676911843905|0|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop sequence if exists category_seq|drop sequence if exists category_seq 2023-02-21T01:50:43.905+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop sequence if exists delivery_seq 2023-02-21T01:50:43.906+09:00 INFO 19303 --- [ main] p6spy : 1676911843906|0|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop sequence if exists delivery_seq|drop sequence if exists delivery_seq 2023-02-21T01:50:43.907+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop sequence if exists item_seq 2023-02-21T01:50:43.907+09:00 INFO 19303 --- [ main] p6spy : 1676911843907|0|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop sequence if exists item_seq|drop sequence if exists item_seq 2023-02-21T01:50:43.908+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop sequence if exists member_seq 2023-02-21T01:50:43.908+09:00 INFO 19303 --- [ main] p6spy : 1676911843908|0|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop sequence if exists member_seq|drop sequence if exists member_seq 2023-02-21T01:50:43.909+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop sequence if exists order_item_seq 2023-02-21T01:50:43.910+09:00 INFO 19303 --- [ main] p6spy : 1676911843910|0|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop sequence if exists order_item_seq|drop sequence if exists order_item_seq 2023-02-21T01:50:43.910+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : drop sequence if exists orders_seq 2023-02-21T01:50:43.911+09:00 INFO 19303 --- [ main] p6spy : 1676911843911|0|statement|connection 3|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop sequence if exists orders_seq|drop sequence if exists orders_seq 2023-02-21T01:50:43.921+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create sequence category_seq start with 1 increment by 50 2023-02-21T01:50:43.924+09:00 INFO 19303 --- [ main] p6spy : 1676911843923|1|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create sequence category_seq start with 1 increment by 50|create sequence category_seq start with 1 increment by 50 2023-02-21T01:50:43.924+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create sequence delivery_seq start with 1 increment by 50 2023-02-21T01:50:43.925+09:00 INFO 19303 --- [ main] p6spy : 1676911843925|0|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create sequence delivery_seq start with 1 increment by 50|create sequence delivery_seq start with 1 increment by 50 2023-02-21T01:50:43.925+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create sequence item_seq start with 1 increment by 50 2023-02-21T01:50:43.926+09:00 INFO 19303 --- [ main] p6spy : 1676911843926|0|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create sequence item_seq start with 1 increment by 50|create sequence item_seq start with 1 increment by 50 2023-02-21T01:50:43.926+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create sequence member_seq start with 1 increment by 50 2023-02-21T01:50:43.927+09:00 INFO 19303 --- [ main] p6spy : 1676911843926|0|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create sequence member_seq start with 1 increment by 50|create sequence member_seq start with 1 increment by 50 2023-02-21T01:50:43.927+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create sequence order_item_seq start with 1 increment by 50 2023-02-21T01:50:43.928+09:00 INFO 19303 --- [ main] p6spy : 1676911843928|0|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create sequence order_item_seq start with 1 increment by 50|create sequence order_item_seq start with 1 increment by 50 2023-02-21T01:50:43.930+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create sequence orders_seq start with 1 increment by 50 2023-02-21T01:50:43.933+09:00 INFO 19303 --- [ main] p6spy : 1676911843933|2|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create sequence orders_seq start with 1 increment by 50|create sequence orders_seq start with 1 increment by 50 2023-02-21T01:50:43.937+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create table category (category_id bigint not null, name varchar(255), parent_id bigint, primary key (category_id)) 2023-02-21T01:50:43.946+09:00 INFO 19303 --- [ main] p6spy : 1676911843946|8|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create table category (category_id bigint not null, name varchar(255), parent_id bigint, primary key (category_id))|create table category (category_id bigint not null, name varchar(255), parent_id bigint, primary key (category_id)) 2023-02-21T01:50:43.947+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create table category_item (category_id bigint not null, item_id bigint not null) 2023-02-21T01:50:43.949+09:00 INFO 19303 --- [ main] p6spy : 1676911843949|1|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create table category_item (category_id bigint not null, item_id bigint not null)|create table category_item (category_id bigint not null, item_id bigint not null) 2023-02-21T01:50:43.949+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create table delivery (delivery_id bigint not null, city varchar(255), street varchar(255), zipcode varchar(255), status varchar(255), primary key (delivery_id)) 2023-02-21T01:50:43.954+09:00 INFO 19303 --- [ main] p6spy : 1676911843953|4|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create table delivery (delivery_id bigint not null, city varchar(255), street varchar(255), zipcode varchar(255), status varchar(255), primary key (delivery_id))|create table delivery (delivery_id bigint not null, city varchar(255), street varchar(255), zipcode varchar(255), status varchar(255), primary key (delivery_id)) 2023-02-21T01:50:43.954+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create table item (dtype varchar(31) not null, item_id bigint not null, name varchar(255), price integer not null, stock_quantity integer not null, artist varchar(255), etc varchar(255), author varchar(255), isbn varchar(255), actor varchar(255), director varchar(255), primary key (item_id)) 2023-02-21T01:50:43.957+09:00 INFO 19303 --- [ main] p6spy : 1676911843957|2|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create table item (dtype varchar(31) not null, item_id bigint not null, name varchar(255), price integer not null, stock_quantity integer not null, artist varchar(255), etc varchar(255), author varchar(255), isbn varchar(255), actor varchar(255), director varchar(255), primary key (item_id))|create table item (dtype varchar(31) not null, item_id bigint not null, name varchar(255), price integer not null, stock_quantity integer not null, artist varchar(255), etc varchar(255), author varchar(255), isbn varchar(255), actor varchar(255), director varchar(255), primary key (item_id)) 2023-02-21T01:50:43.957+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create table member (member_id bigint not null, city varchar(255), street varchar(255), zipcode varchar(255), name varchar(255), primary key (member_id)) 2023-02-21T01:50:43.960+09:00 INFO 19303 --- [ main] p6spy : 1676911843959|1|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create table member (member_id bigint not null, city varchar(255), street varchar(255), zipcode varchar(255), name varchar(255), primary key (member_id))|create table member (member_id bigint not null, city varchar(255), street varchar(255), zipcode varchar(255), name varchar(255), primary key (member_id)) 2023-02-21T01:50:43.960+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create table order_item (order_item_id bigint not null, count integer not null, order_price integer not null, item_id bigint, order_id bigint, primary key (order_item_id)) 2023-02-21T01:50:43.962+09:00 INFO 19303 --- [ main] p6spy : 1676911843962|1|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create table order_item (order_item_id bigint not null, count integer not null, order_price integer not null, item_id bigint, order_id bigint, primary key (order_item_id))|create table order_item (order_item_id bigint not null, count integer not null, order_price integer not null, item_id bigint, order_id bigint, primary key (order_item_id)) 2023-02-21T01:50:43.962+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : create table orders (order_id bigint not null, order_date timestamp(6), status varchar(255), delivery_id bigint, member_id bigint, primary key (order_id)) 2023-02-21T01:50:43.964+09:00 INFO 19303 --- [ main] p6spy : 1676911843964|1|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|create table orders (order_id bigint not null, order_date timestamp(6), status varchar(255), delivery_id bigint, member_id bigint, primary key (order_id))|create table orders (order_id bigint not null, order_date timestamp(6), status varchar(255), delivery_id bigint, member_id bigint, primary key (order_id)) 2023-02-21T01:50:43.965+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : alter table if exists category add constraint FK2y94svpmqttx80mshyny85wqr foreign key (parent_id) references category 2023-02-21T01:50:43.986+09:00 INFO 19303 --- [ main] p6spy : 1676911843986|20|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|alter table if exists category add constraint FK2y94svpmqttx80mshyny85wqr foreign key (parent_id) references category|alter table if exists category add constraint FK2y94svpmqttx80mshyny85wqr foreign key (parent_id) references category 2023-02-21T01:50:43.986+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : alter table if exists category_item add constraint FKu8b4lwqutcdq3363gf6mlujq foreign key (item_id) references item 2023-02-21T01:50:43.989+09:00 INFO 19303 --- [ main] p6spy : 1676911843989|3|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|alter table if exists category_item add constraint FKu8b4lwqutcdq3363gf6mlujq foreign key (item_id) references item|alter table if exists category_item add constraint FKu8b4lwqutcdq3363gf6mlujq foreign key (item_id) references item 2023-02-21T01:50:43.990+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : alter table if exists category_item add constraint FKcq2n0opf5shyh84ex1fhukcbh foreign key (category_id) references category 2023-02-21T01:50:43.992+09:00 INFO 19303 --- [ main] p6spy : 1676911843992|2|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|alter table if exists category_item add constraint FKcq2n0opf5shyh84ex1fhukcbh foreign key (category_id) references category|alter table if exists category_item add constraint FKcq2n0opf5shyh84ex1fhukcbh foreign key (category_id) references category 2023-02-21T01:50:43.992+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : alter table if exists order_item add constraint FKija6hjjiit8dprnmvtvgdp6ru foreign key (item_id) references item 2023-02-21T01:50:43.995+09:00 INFO 19303 --- [ main] p6spy : 1676911843994|1|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|alter table if exists order_item add constraint FKija6hjjiit8dprnmvtvgdp6ru foreign key (item_id) references item|alter table if exists order_item add constraint FKija6hjjiit8dprnmvtvgdp6ru foreign key (item_id) references item 2023-02-21T01:50:43.995+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : alter table if exists order_item add constraint FKt4dc2r9nbvbujrljv3e23iibt foreign key (order_id) references orders 2023-02-21T01:50:43.997+09:00 INFO 19303 --- [ main] p6spy : 1676911843997|2|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|alter table if exists order_item add constraint FKt4dc2r9nbvbujrljv3e23iibt foreign key (order_id) references orders|alter table if exists order_item add constraint FKt4dc2r9nbvbujrljv3e23iibt foreign key (order_id) references orders 2023-02-21T01:50:43.998+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : alter table if exists orders add constraint FKtkrur7wg4d8ax0pwgo0vmy20c foreign key (delivery_id) references delivery 2023-02-21T01:50:44.000+09:00 INFO 19303 --- [ main] p6spy : 1676911844000|2|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|alter table if exists orders add constraint FKtkrur7wg4d8ax0pwgo0vmy20c foreign key (delivery_id) references delivery|alter table if exists orders add constraint FKtkrur7wg4d8ax0pwgo0vmy20c foreign key (delivery_id) references delivery 2023-02-21T01:50:44.000+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : alter table if exists orders add constraint FKpktxwhj3x9m4gth5ff6bkqgeb foreign key (member_id) references member 2023-02-21T01:50:44.005+09:00 INFO 19303 --- [ main] p6spy : 1676911844005|4|statement|connection 4|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|alter table if exists orders add constraint FKpktxwhj3x9m4gth5ff6bkqgeb foreign key (member_id) references member|alter table if exists orders add constraint FKpktxwhj3x9m4gth5ff6bkqgeb foreign key (member_id) references member 2023-02-21T01:50:44.009+09:00 INFO 19303 --- [ main] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform] 2023-02-21T01:50:44.026+09:00 INFO 19303 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default' 2023-02-21T01:50:44.445+09:00 WARN 19303 --- [ main] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning 2023-02-21T01:50:44.884+09:00 INFO 19303 --- [ main] o.s.b.a.w.s.WelcomePageHandlerMapping : Adding welcome page: class path resource [static/index.html] 2023-02-21T01:50:45.303+09:00 INFO 19303 --- [ main] j.jpashop.service.MemberServiceTest : Started MemberServiceTest in 9.615 seconds (process running for 13.008) 2023-02-21T01:50:46.493+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : select m1_0.member_id,m1_0.city,m1_0.street,m1_0.zipcode,m1_0.name from member m1_0 where m1_0.name=? 2023-02-21T01:50:46.504+09:00 INFO 19303 --- [ main] p6spy : 1676911846504|0|statement|connection 5|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|select m1_0.member_id,m1_0.city,m1_0.street,m1_0.zipcode,m1_0.name from member m1_0 where m1_0.name=?|select m1_0.member_id,m1_0.city,m1_0.street,m1_0.zipcode,m1_0.name from member m1_0 where m1_0.name='kim' 2023-02-21T01:50:46.529+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : select next value for member_seq 2023-02-21T01:50:46.539+09:00 INFO 19303 --- [ main] p6spy : 1676911846539|2|statement|connection 5|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|select next value for member_seq|select next value for member_seq 2023-02-21T01:50:46.611+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : insert into member (city, street, zipcode, name, member_id) values (?, ?, ?, ?, ?) 2023-02-21T01:50:46.614+09:00 INFO 19303 --- [ main] p6spy : 1676911846614|1|statement|connection 5|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|insert into member (city, street, zipcode, name, member_id) values (?, ?, ?, ?, ?)|insert into member (city, street, zipcode, name, member_id) values (NULL, NULL, NULL, 'kim', 1) 2023-02-21T01:50:46.624+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : select m1_0.member_id,m1_0.city,m1_0.street,m1_0.zipcode,m1_0.name from member m1_0 where m1_0.name=? 2023-02-21T01:50:46.626+09:00 INFO 19303 --- [ main] p6spy : 1676911846625|0|statement|connection 5|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|select m1_0.member_id,m1_0.city,m1_0.street,m1_0.zipcode,m1_0.name from member m1_0 where m1_0.name=?|select m1_0.member_id,m1_0.city,m1_0.street,m1_0.zipcode,m1_0.name from member m1_0 where m1_0.name='kim' 2023-02-21T01:50:46.650+09:00 INFO 19303 --- [ main] p6spy : 1676911846649|1|rollback|connection 5|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|| 2023-02-21T01:50:46.673+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : select m1_0.member_id,m1_0.city,m1_0.street,m1_0.zipcode,m1_0.name from member m1_0 where m1_0.name=? 2023-02-21T01:50:46.675+09:00 INFO 19303 --- [ main] p6spy : 1676911846675|0|statement|connection 6|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|select m1_0.member_id,m1_0.city,m1_0.street,m1_0.zipcode,m1_0.name from member m1_0 where m1_0.name=?|select m1_0.member_id,m1_0.city,m1_0.street,m1_0.zipcode,m1_0.name from member m1_0 where m1_0.name='kim' 2023-02-21T01:50:46.676+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : select next value for member_seq 2023-02-21T01:50:46.676+09:00 INFO 19303 --- [ main] p6spy : 1676911846676|0|statement|connection 6|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|select next value for member_seq|select next value for member_seq 2023-02-21T01:50:46.696+09:00 DEBUG 19303 --- [ main] org.hibernate.SQL : insert into member (city, street, zipcode, name, member_id) values (?, ?, ?, ?, ?) 2023-02-21T01:50:46.697+09:00 INFO 19303 --- [ main] p6spy : 1676911846697|0|statement|connection 6|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|insert into member (city, street, zipcode, name, member_id) values (?, ?, ?, ?, ?)|insert into member (city, street, zipcode, name, member_id) values (NULL, NULL, NULL, 'kim', 2) 2023-02-21T01:50:46.699+09:00 INFO 19303 --- [ main] p6spy : 1676911846699|0|commit|connection 6|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|| 2023-02-21T01:50:46.726+09:00 INFO 19303 --- [ionShutdownHook] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default' 2023-02-21T01:50:46.729+09:00 INFO 19303 --- [ionShutdownHook] .SchemaDropperImpl$DelayedDropActionImpl : HHH000477: Starting delayed evictData of schema as part of SessionFactory shut-down' 2023-02-21T01:50:46.730+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop table if exists category cascade 2023-02-21T01:50:46.745+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846745|13|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists category cascade |drop table if exists category cascade 2023-02-21T01:50:46.745+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop table if exists category_item cascade 2023-02-21T01:50:46.752+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846752|7|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists category_item cascade |drop table if exists category_item cascade 2023-02-21T01:50:46.753+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop table if exists delivery cascade 2023-02-21T01:50:46.759+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846759|5|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists delivery cascade |drop table if exists delivery cascade 2023-02-21T01:50:46.759+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop table if exists item cascade 2023-02-21T01:50:46.761+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846760|1|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists item cascade |drop table if exists item cascade 2023-02-21T01:50:46.761+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop table if exists member cascade 2023-02-21T01:50:46.764+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846764|2|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists member cascade |drop table if exists member cascade 2023-02-21T01:50:46.764+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop table if exists order_item cascade 2023-02-21T01:50:46.769+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846769|4|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists order_item cascade |drop table if exists order_item cascade 2023-02-21T01:50:46.769+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop table if exists orders cascade 2023-02-21T01:50:46.771+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846771|1|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop table if exists orders cascade |drop table if exists orders cascade 2023-02-21T01:50:46.772+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop sequence if exists category_seq 2023-02-21T01:50:46.773+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846773|0|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop sequence if exists category_seq|drop sequence if exists category_seq 2023-02-21T01:50:46.773+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop sequence if exists delivery_seq 2023-02-21T01:50:46.774+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846774|0|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop sequence if exists delivery_seq|drop sequence if exists delivery_seq 2023-02-21T01:50:46.774+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop sequence if exists item_seq 2023-02-21T01:50:46.775+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846775|0|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop sequence if exists item_seq|drop sequence if exists item_seq 2023-02-21T01:50:46.775+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop sequence if exists member_seq 2023-02-21T01:50:46.776+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846776|0|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop sequence if exists member_seq|drop sequence if exists member_seq 2023-02-21T01:50:46.776+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop sequence if exists order_item_seq 2023-02-21T01:50:46.777+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846777|0|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop sequence if exists order_item_seq|drop sequence if exists order_item_seq 2023-02-21T01:50:46.777+09:00 DEBUG 19303 --- [ionShutdownHook] org.hibernate.SQL : drop sequence if exists orders_seq 2023-02-21T01:50:46.778+09:00 INFO 19303 --- [ionShutdownHook] p6spy : 1676911846778|0|statement|connection 7|url jdbc:h2:mem:a8d68834-99ee-4507-a769-b266691c8e37|drop sequence if exists orders_seq|drop sequence if exists orders_seq 2023-02-21T01:50:46.783+09:00 INFO 19303 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated... 2023-02-21T01:50:46.788+09:00 INFO 19303 --- [ionShutdownHook] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed. Process finished with exit code 0
spring-boot 웹앱 JPA 웹앱 spring jpa java
114tla
2023-02-20T16:54:32.895Z
댓글 1
좋아요 0
조회수 732
미해결
나도코딩의 자바 기본편 - 풀코스 (20시간)
Throw 로 생성을 해주니 클래스 부분에 스태틱을 포함하든가 메인 영역에 스태틱을 지우라고 오류가 뜹니다. 선생님 코드에는 이상이 없는 것 같은데 궁금합니다! 이렇게 클래스에 스태틱을 추가하면 오류가 사라집니다.
2023-02-20T13:12:00.379Z
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좋아요 0
조회수 355
해결됨
실전! 스프링 부트와 JPA 활용1 - 웹 애플리케이션 개발
학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요. 1. 강의 내용과 관련된 질문을 남겨주세요. 2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요. (자주 하는 질문 링크: https://bit.ly/3fX6ygx) 3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요. (질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG) 질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요. ========================================= [질문 템플릿] 1. 강의 내용과 관련된 질문인가요? (예) 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/) 3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예) [질문 내용] getTotalPrice() 메서드가 OrderItem 클래스 안에 있으니까 orderPrice 변수와 count변수를 직접 건들수 있는데 왜 orderPrice*count가 아닌 getOrderPrice()* getCount()를 쓰는지 궁금합니다..
java spring-boot 웹앱 spring 웹앱 jpa JPA
최재영
2023-02-20T06:35:12.615Z
댓글 1
좋아요 1
조회수 413
해결됨
자바와 스프링 부트로 생애 최초 서버 만들기, 누구나 쉽게 개발부터 배포까지! [서버 개발 올인원 패키지]
강의를 보면 controller에서 작업을 마무리하고, 이후에 코드를 정리하면서 controller, service, repository로 3단 분리를 하시는데, 실제로 처음부터 3단 분리를 하면서 코드를 짜려니까 머리 속에 로직이 잘 정리가 안되더라고요. 처음부터 역할에 맞게 분리를 하며 코딩을 하시는지, 아니면 처음에는 머리 속의 로직을 그대로 쭉 코딩하신 후에 나중에 정리를 하시는 편이신지 궁금합니다.
aws spring java spring-boot jpa JPA mysql
Dompoo
2023-02-20T04:50:10.215Z
댓글 1
좋아요 3
조회수 947
미해결
홍정모의 따라하며 배우는 C언어
안녕하세요. 컴파일 과정과 관련하여 잘 이해가 되지 않은 부분이 있어서 질문 드립니다. <질문1> 컴파일 관련 질문 1) 컴파일 작업 중 전처리 단계에서는 include한 헤더파일의 내용 즉, 헤더파일에 저장된 함수 선언 부분을 소스파일로 복사붙여넣기 하는 과정이고, 헤더파일은 일반적은 함수의 선언만 되어 있기 때문에 함수가 호출될 때는 함수의 body가 있는 다른 실행파일과 연결하는 '링킹'과정이 필요하다. 라고 이해하였는데 제대로 이해하였나요? 즉, 전처리 단계는 함수를 선언하는 과정이라면, 함수 호출이 될 때, 함수의 body부분을 알 수 있고, 제대로 body 부분을 파악하기 위해서 '링킹'이 제대로 되는 것이 중요하다고 이해했습니다! 2) inline함수는 위의 일반적인 함수 호출과 달리, 주소에 접근하여 함수의 코드를 가져오는 것이 아니라 단순히 헤더파일에 있는 함수의 코드를 복사하여 main함수에 붙여넣는 구조인 것인가요? 그렇다면, 일반적인 함수 호출보다 상대적으로 더 빠르다고 볼 수 있을까요? 또한, inline함수는 함수의 주소를 모른다고 했는데, 그 이유가 무엇인지도 궁금합니다. <질문2> 함수 관련 질문 함수 또한 포인터이기 때문에 함수가 호출되면, 함수가 가리키고 있는 주소에 접근하여 함수의 실행 코드를 실행한다고 하셨습니다. 예를 들어 sum함수를 호출한다고 할 때, a,b를 함수의 인자로 받게 되면, 변수 a,b를 통해서 접근할 수 있는 메모리에 들어있는 '값'과 함수 호출 종료 후 돌아올 주소값이 함수 실행 파일의 스택에 쌓이게 되고, 함수 실행 코드에서의 지역변수들이 그 위에 쌓이면서 스택 프레임이 생성되는 것인가요? 이러한 스택 프레임을 활용하여 code segment에 있는 함수 코드들이 실행되는 것인가요? 감사합니다!!!
눈누
2023-02-20T02:32:02.231Z
댓글 1
좋아요 0
조회수 342
미해결
자바 ORM 표준 JPA 프로그래밍 - 기본편
학습하는 분들께 도움이 되고, 더 좋은 답변을 드릴 수 있도록 질문전에 다음을 꼭 확인해주세요. 1. 강의 내용과 관련된 질문을 남겨주세요. 2. 인프런의 질문 게시판과 자주 하는 질문(링크)을 먼저 확인해주세요. (자주 하는 질문 링크: https://bit.ly/3fX6ygx) 3. 질문 잘하기 메뉴얼(링크)을 먼저 읽어주세요. (질문 잘하기 메뉴얼 링크: https://bit.ly/2UfeqCG) 질문 시에는 위 내용은 삭제하고 다음 내용을 남겨주세요. ========================================= [질문 템플릿] 1. 강의 내용과 관련된 질문인가요? (예/아니오) 2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? (예/아니오) 3. 질문 잘하기 메뉴얼을 읽어보셨나요? (예/아니오) 일반적으로 스프링 컨테이너는 싱글톤 기반으로 동작하기에 빈은 모든 쓰레드가 공유합니다. 그런데@PersistenceContext을 통해 주입 받은 EntityManager는 동시성 문제가 발생하지 않는다고 해서 의문이 생겼습니다. 따라서 관련된 내용을 공부하던 중 아래 질문의 영한님 답변을 봤습니다. https://www.inflearn.com/questions/158967/%EC%95%88%EB%85%95%ED%95%98%EC%84%B8%EC%9A%94-entitymanager%EC%97%90-%EB%8C%80%ED%95%B4-%EA%B6%81%EA%B8%88%ED%95%9C-%EC%A0%90%EC%9D%B4-%EC%9E%88%EC%96%B4-%EC%A7%88%EB%AC%B8-%EB%82%A8%EA%B9%81%EB%8B%88%EB%8B%A4 제가 이해한 바로는 private final EntityManager em;를 통해 주입 받은 엔티티매니저는 싱글톤 빈이지만 일반적인 빈들과는 다릅니다. 공통점 : 일반적인 스프링 빈과 엔티티 매니저는 모두 프록시 객체를 주입받는다. 그리고 이는 모두 싱글톤이다. 차이점 : 일반적인 스프링 빈은 호출될때마다 에플리케이션 전체를 대상으로 해당 빈이 스프링 컨테이너에 등록되어 있는지 찾고 있으면 스프링 컨테이너에서 찾아 반환, 없으면 빈을 생성하고 등록(CGLIB 기술) 반면 엔티티매니저는 이해가 가지 않습니다. 책 581 페이지를 보면 A, B 코드에서 호출한 엔티티 매니저는 서로 다르며 , 582에서 멀티 쓰레드에서 같은 코드에서 호출한 엔티티 매니저는 서로 같습니다. 일반적인 싱글톤 빈들이나 엔티티 매니저 모두 싱글톤이며 프록시 객체를 주입 받는 것 같은데 그 안의 원리들이 조금 다른 것 같은데 이 점이 궁금합니다.
소니소니
2023-02-19T09:26:28.352Z
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미해결
문제로 배우는 C언어
3:14부터 설명하시는 내용에 대해서 질문 있습니다. 다른 부분은 예외로 치고 반복문에서만 봤을 때, 반복문이 최대한 조금 돌아가게 만드는 게 효율성이 높고 좋은 코드라고 볼 수 있는건가요?? 그런 의미에서 21번 최대공약수 문제에서 for (i = 1; i <= a && i <= b; i++) { if (a % i == 0 && b % i == 0) max = i; } printf("%d", max); 이렇게 작성하였는데 코드를 최대한 간결하게 작성하는 것에 중점을 두었습니다. 그런데 의문인 점이 a, b 중 작은 값이 30이라면 반복문이 무조건 30번 돌아가기 때문에 선생님께서 작성하신 코드에 비해 비효율적이고 안좋은 코드라고 볼 수 있을까요? 그렇다면 앞으로 반복문이 들어가는 코드를 작성 할 때 반복횟수를 고려하면서 작성하는 게 좋은 습관을 만드는 길인걸까요? 아니면 이렇게까지 신경 쓸 필요는 없나요? 궁금합니다!
김준범
2023-02-19T08:55:25.724Z
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해결됨
나도코딩의 자바 기본편 - 풀코스 (20시간)
안녕하세요, 다름이 아니라 제가 나도코딩 자바(Java) 기본편을 공부하면서, 배열(Array)에 관해 모르는 것이 생겨서 이렇게 질문을 남깁니다. 일반적으로 배열이 String[] array = {...}; 이렇게 선언 되었을 때, array.length를 이용 해서 배열의 길이를 파악하고, array[0] 처럼 이렇게 인덱스로 값의 위치를 파악 하면서 데이터를 읽는다고 알고 있습니다. 반면에 String sentence = "sentence"; 이런 경우에는 같은 length를 쓰지만 String 클래스의 메소드라서 괄호를 나타낸 sentence.length()로 길이를 파악 하고, "..."; 안 문장의 각 글자 별 위치를 파악할 때는 sentence.charAt()을 쓴다 고 알고 있습니다. 제가 이해한 부분이 혹시 맞을까요? 또한 아래처럼 선언된 String[] 배열에서: String[] Java = { "나는 자바가 좋아요" }; Java 배열의 전체 길이를 파악하고 싶다면, Java.length 으로 적는데, 만약 배열 안 문장 "나는 자바가 좋아요" 의 전체 길이를 알고 싶다면 Java[].length()으로 적고, 배열 안에 들어있는 문장 "나는 자바가 좋아요" 에서 각 낱말의 위치를 파악하고 싶다면, Java[].charAt()를 적으면 되는 건가요? 여기서 Java[].부분에는 배열 index를 적고 (예를 들면 Java[0]), charAt()은 "..." 문장의 각 글자 별 인덱스를 적는 방식으로요. 질문이 조금 많이 길었습니다. 하지만 동시에 그 만큼 제가 또한 열심히 배우고 싶다는 열정으로 봐주셨으면 합니다! 게다가 앞으로 다가올 기말시험에서도 배열의 비중이 꽤 크기도 해서, 정말로 잘 배우고 싶습니다! (해외에서 대학을 다니는 지라 지금 이맘때 쯤이 시험기간입니다 ㅠㅠ) 참 얼마 전에, 자바로 소켓 프로그래밍으로 과제를 해야 했었던 일이 있었는데, 그 때 나도코딩님이 업로드 해주신 섹션 12. (Section 12.) 예외 처리 부분이 상당히 많이 도움 되었습니다. 덕분에 과제에서 나쁘지 않은 점수를 받았습니다. 앞으로도 좋은 강의 잘 부탁하고, 진심으로 감사합니다 :-)
객체지향 java 배열 oop array 문자열 string
2023-02-18T20:00:41.551Z
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미해결
홍정모의 따라하며 배우는 C언어
int arr0[3] = {1, 2, 3}; int arr1[3] = {4,5,6}; int* parr[2] = {arr0,arr1}와 같이 포인터의 배열을 선언해준다는 가정 하에 이때 parr자체는 arr0[0]을 가리키는 것이 맞나요??
jiwon6760
2023-02-18T16:01:20.604Z
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해결됨
홍정모의 따라하며 배우는 C언어
안녕하세요. 몇 번이고 다시 실습 코드를 쳐봤지만 같은 오류가 생깁니다. 원인이 무엇인지 구글링을 해봐도 잘 모르겠습니다. 늘 좋은 강의 감사합니다.
이재완
2023-02-18T13:11:57.181Z
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해결됨
자바와 스프링 부트로 생애 최초 서버 만들기, 누구나 쉽게 개발부터 배포까지! [서버 개발 올인원 패키지]
https://goodteacher.tistory.com/291 위 블로그를 참고해서 비밀번호를 초기화했는데 mysql -u root -p Enter password: ************ ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES) 위와 같이 나옵니다. 위 에러 메시지는 비밀번호를 잘못입력했을 때 나오는 걸로 아는데 저 한영 잘못친 것도 없고 numlock도 풀려있어서 제대로 잘 입력했는데 왜 그럴까요ㅠ mysql --version 해보면 mysql ver8.0.27 로 잘 나옵니다
spring-boot mysql spring JPA java jpa aws
유은혜
2023-02-18T10:44:48.133Z
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해결됨
스프링 입문 - 코드로 배우는 스프링 부트, 웹 MVC, DB 접근 기술
강의 교재의 "스프링은 스프링 컨테이너에 스프링 빈을 등록할 때, 기본으로 싱글톤으로 등록한다(유일하게 하나만 등록해서 공유한다) 따라서 같은 스프링 빈이면 모두 같은 인스턴스다." 이 문장에서 같은 스프링 빈이면 모두 같은 인스턴스라는 말이 하나의 인스턴스로 자원을 공유한다는 의미 같은데 어떤 경우에 싱글톤을 사용해 자원을 공유하는지 궁금합니다.
MVC mvc spring-boot spring java
심야
2023-02-18T08:21:20.953Z
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