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)[질문 내용]여기에 질문 내용을 남겨주세요.6:23에 필드주입을 하면 중간에 바꿔치기를 할수있는 방법이 없다는게 무슨 말인가요? 그럼 생성자주입은 바꿔치기가 된다는건데 이게 조립될때를 말하는건가요? 그럼 필드주입은 조립될때도 안바뀐다는건가요? 실행중에 바꾸는건 세터만 된다는식으로 얘기를해서요 컨트롤러가 정확하게 어떻게 작동되는지에 대한 이해가 아직 부족한거같은데 로드맵 따라가다보면 채워지는 부분일까요?

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)[질문 내용]여기에 질문 내용을 남겨주세요.MemberServiceTest에서 BeforeEach에서 새로 객체를 불러오고 AfterEach에선 다음 테스트를 위해 저장된걸 지우는걸로 이해를 했는데 어차피 객체를 새로 만드는데 지우는 과정이 왜 필요한건가요? 그래서 AfterEach 코드를 지워봤는데 회원가입()에서부터 막히더라고요AfterEach는 테스트가 끝나고 실행되는건데 왜 첫번째 테스트부터 작동에 문제가 생기는건가요? 

안녕하세요 강의 잘 듣고 있습니다.저는 upgradeLevel 을 하기 위해서 새로 인스턴스를 생성하고 넘겨주는 방식이 아닌 게임처럼 한단계씩 업그레이드 되는 방식으로 구현하고 싶습니다. 그래서 다음과 같이 생각해서 적어봤는데, 2가지 문제가 있는것 같습니다. 어떻게 하면 될까요? public BeginnerLevel level = new BeginnerLevel(); public void upgradeLevel(PlayerLevel level) { // if(level.levelName ) if (level instanceof BeginnerLevel) { level = new AdvancedLevel(); } else if (level instanceof AdvancedLevel) { level = new SuperLevel(); } else if (level instanceof SuperLevel) { System.out.println("you are already highest level"); } }첫째로 instanceof를 잘못쓰고 있는 것 같고, 둘째로 level = new AdvancedLevel() 이런식으로 재정의 하는게 가능한가요? 궁금합니다.

챕터9 값 타입 컬렉션 25분Address 값 타입 컬렉션 삭제 부분입니다. 우선 삭제되는 부분만 확인하고 싶어서, 새로운 값을 추가하지는 않았습니다.System.out.println("========== 값 타입 컬렉션 주소 삭제================"); findMember.getAddressHistory().remove(new Address("old1", "street", "zipcode"));   데이터는 정상적으로 삭제되었는데, 저는 왜 Member테이블에 대해 update쿼리가 나가는지가 이해가 안가는데요,Member 테이블에서는 수정사항이 발생할게 없는데 왜 update쿼리도 발생했는지 알 수 있을까요?  혹시 몰라 코드 전체와 결과 남깁니다.  Member member = new Member(); member.setUsername("member1"); member.setHomeAddress(new Address("homeCity","street","zipcode")); member.getFavoriteFoods().add("꾸부라꼬"); member.getFavoriteFoods().add("카페라떼"); member.getFavoriteFoods().add("회"); member.getAddressHistory().add(new Address("old1", "street", "zipcode")); member.getAddressHistory().add(new Address("old2", "street", "zipcode")); em.persist(member); em.flush(); em.clear(); System.out.println("================== 조회 시작 =================="); Member findMember = em.find(Member.class, member.getId()); System.out.println("================== 컬렉션은 지연로딩, Addr 조회 =================="); List<Address> addressHistory = findMember.getAddressHistory(); for(Address address : addressHistory) { System.out.println("address = " + address.getCity()); } System.out.println("================== 컬렉션은 지연로딩, favorite food 조회 =================="); Set<String> favoriteFoods = findMember.getFavoriteFoods(); for(String favoriteFood : favoriteFoods) { System.out.println("favoriteFood = " + favoriteFood); } Address homeAddress = findMember.getHomeAddress(); findMember.setHomeAddress(new Address("new change city", homeAddress.getStreet(), homeAddress.getZipcode())); findMember.getFavoriteFoods().remove("꾸부라꼬"); findMember.getFavoriteFoods().add("무화과 크림치즈 베이글"); System.out.println("========== 값 타입 컬렉션 주소 삭제================"); findMember.getAddressHistory().remove(new Address("old1", "street", "zipcode")); tx.commit();  Hibernate: /* insert hellojpa.Member */ insert into Member (city, street, zipcode, USERNAME, MEMBER_ID) values (?, ?, ?, ?, ?) Hibernate: /* insert collection row hellojpa.Member.addressHistory */ insert into ADDRESS (MEMBER_ID, city, street, zipcode) values (?, ?, ?, ?) Hibernate: /* insert collection row hellojpa.Member.addressHistory */ insert into ADDRESS (MEMBER_ID, city, street, zipcode) values (?, ?, ?, ?) Hibernate: /* insert collection row hellojpa.Member.favoriteFoods */ insert into FAVORITE_FOOD (MEMBER_ID, FOOD_NAME) values (?, ?) Hibernate: /* insert collection row hellojpa.Member.favoriteFoods */ insert into FAVORITE_FOOD (MEMBER_ID, FOOD_NAME) values (?, ?) Hibernate: /* insert collection row hellojpa.Member.favoriteFoods */ insert into FAVORITE_FOOD (MEMBER_ID, FOOD_NAME) values (?, ?) ================== 조회 시작 ================== Hibernate: select member0_.MEMBER_ID as member_i1_6_0_, member0_.city as city2_6_0_, member0_.street as street3_6_0_, member0_.zipcode as zipcode4_6_0_, member0_.USERNAME as username5_6_0_ from Member member0_ where member0_.MEMBER_ID=? ================== 컬렉션은 지연로딩, Addr 조회 ================== Hibernate: select addresshis0_.MEMBER_ID as member_i1_0_0_, addresshis0_.city as city2_0_0_, addresshis0_.street as street3_0_0_, addresshis0_.zipcode as zipcode4_0_0_ from ADDRESS addresshis0_ where addresshis0_.MEMBER_ID=? address = old1 address = old2 ================== 컬렉션은 지연로딩, favoritfood 조회 조회 ================== Hibernate: select favoritefo0_.MEMBER_ID as member_i1_4_0_, favoritefo0_.FOOD_NAME as food_nam2_4_0_ from FAVORITE_FOOD favoritefo0_ where favoritefo0_.MEMBER_ID=? foavortefood = 꾸부라꼬 foavortefood = 회 foavortefood = 카페라떼 ========== 값 타입 컬렉션 주소 삭제================ Hibernate: /* update hellojpa.Member */ update Member set city=?, street=?, zipcode=?, USERNAME=? where MEMBER_ID=? Hibernate: /* delete collection hellojpa.Member.addressHistory */ delete from ADDRESS where MEMBER_ID=? Hibernate: /* insert collection row hellojpa.Member.addressHistory */ insert into ADDRESS (MEMBER_ID, city, street, zipcode) values (?, ?, ?, ?) Hibernate: /* delete collection row hellojpa.Member.favoriteFoods */ delete from FAVORITE_FOOD where MEMBER_ID=? and FOOD_NAME=? Hibernate: /* insert collection row hellojpa.Member.favoriteFoods */ insert into FAVORITE_FOOD (MEMBER_ID, FOOD_NAME) values (?, ?) Process finished with exit code 0

안녕하세요강의를 듣다가 궁금증이 생겨서 질문을 드립니다.void init() { // given List<Product> products = List.of( createProduct("001", 1000), createProduct("002", 2000) ); // when Order order = Order.create(products, LocalDateTime.now()); // then assertThat(order.getOrderStatus()).isEqualByComparingTo(OrderStatus.INIT); }강의에서 OrderTest 클래스 테스트 과정에서 enum을 비교할때 isEqualByComparingTo를 사용하셨습니다.  assertThat(order.getOrderStatus()).isEqualTo(OrderStatus.INIT);위와 같이 isEqualTo를 사용해도 enum을 비교할 수 있는데, 혹시 isEqualTo 대신 isEqualByComparingTo를 사용한 이유를 알 수 있을까요? isEqualByComparing가 정의된 AbstractComparableAssert.java를 확인해보면 BigDecimal을 예시로 들어서 사용법을 설명하고 있습니다.BigDecimal의 예시로 Enum을 써야 하는 방법을 생각해보았는데, 유추(?)가 잘 되지 않아서 질문을 남깁니다. 항상 좋은 강의 제공해주셔서 감사합니다!!😀😀

예시 상황은 여러 학생이 테이블을 공유해서 사용하여 모든 테이블에 student_id 컬럼이 있고 이를 이용해 데이터 사용자를 구별한다고 했을 때입니다.이럴 때 모든 find, update, delete 절에 where student_id = '1000' 와 같은 조건이 필요하다고 하면 단순히 모든 find문에 findByStudentId 하고 아이디를 넣어주는 수밖에 없을까요?어플리케이션 사용자 학생 아이디는 properties에 적어놓고 가져와 사용할 것이라 프로세스 실행중에 파라미터로 받아오는 경우는 없습니다. 

빌드하고 실행하기 오류가 납니다제 환경은 아래와 같습니다설치한 자바 버전: javac 11.0.19컴퓨터 환경: 윈도우 명령프롬프트자바 경로: C:\Program Files\Java\jdk-11변경후 자바경로: C:\Program Files\Java\jdk-11.0.19hello-spring 경로: C:\Astudy\hello-spring시스템환경변수: C:\Program Files\Java\jdk-11.0.19 라고 설정(이전에 1.8 자바를 설치했던 경험이 있어서 인텔리에서는 모든 환경을 java 11.0.19로 바꿔줌)시스템 변수 path: %JAVA_HOME%\bin 프로젝트 경로로 이동해서 dir에서 gradlew.bat 확인까지는 잘됩니다 오류1: ERROR: JAVA_HOME is set to an invalid directory: C:\Program Files\Java\jdk-11.0.9Please set the JAVA_HOME variable in your environment to match thelocation of your Java installation.라고 떠서 혹시나 환경변수의 자바명과 자바경로의 명이 달라서 그런가 싶어서이번에는 아예 jdk-11를 지우고 폴더명을 jdk-11.0.19로 다시 만들어 설치함그래도 아래와 같은 오류가 뜸 오류2: C:\Astudy\hello-spring>gradlew.batERROR: JAVA_HOME is set to an invalid directory: C:\Program Files\Java\jdk-11.0.9Please set the JAVA_HOME variable in your environment to match thelocation of your Java installation. 여기서 의문인 것은 왜 java 11.0.19가 아니라 11.0.9로 나온건지 모르겠음 명령어는 gradlew build, ./gradlew build, ./gradlew, ./gradlew.bat, gradlew, gradlew.bat다쳐봄 이중에서 뭘로 골라서 쳐야할 지도 헷갈림 제발 도와주세요

안녕하세요! 정말 감사한 마음으로 강의 수강 중인 대학생입니다퀴즈 7번에 관해서 2가지 질문있습니다. 처음에 아래와 같이 System.out.println(this.name + "를 만듭니다. "); 를 cook 메소드에 넣지 않고 HamBurger 메소드에 넣어서 틀렸습니다. 이외에 모든 코드는 선생님것과 동일합니다class HamBurger{ public String name; HamBurger() { //생성자 this("햄버거"); System.out.println(this.name + "를 만듭니다. "); } HamBurger(String name) { //매개변수를 받는 생성자 this.name = name; } void cook(){ System.out.println("빵 사이에 들어가는 재료는?"); System.out.println("> 양상추 "); System.out.println("+ 패티 "); System.out.println("+ 피클 "); } }왜 HamBurger()에 system.out.println(this.name + "를 만듭니다. ");를 작성하면 안되나요?혹시 그 이유가 생성자와 void메소드는 반환값이 없다고 했는데요,제가 작성한 HamBurger()는 System.out.println(this.name + "를 만듭니다. ");라는 반환값을 만든 것이기 때문인가요?그러면 cook 메소드는 void가 있는데 값을 반환하는 것은 어찌된 것일까요.... 모르겠습니다 흑흑 2. public class Quiz07 에서 cook만 호출했기 때문에 Hamburger메소드에 작성한 System.out.println(this.name + "를 만듭니다. ");가 뜨면 안된다고 생각했는데햄버거를 만듭니다. 주문하신 메뉴를 만듭니다. ------------------- 빵 사이에 들어가는 재료는? > 양상추 + 패티 + 피클 ..."햄버거를 만듭니다" 가 for반복문이 실행되기도 전에 처음에 한번 떴습니다. 호출하지 않았는데 왜 출력된건가요?? 도와주세요!!

2023-07-12 01:18:17.448 ERROR 27420 --- [nio-8080-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is java.lang.IllegalArgumentException] with root cause java.lang.IllegalArgumentException: null at java.base/java.util.Optional.orElseThrow(Optional.java:408) ~[na:na] at com.group.libraryapp.service.book.BookService.loanBook(BookService.java:38) ~[main/:na] at com.group.libraryapp.service.book.BookService$$FastClassBySpringCGLIB$$9fdbff4c.invoke(<generated>) ~[main/:na] at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.3.24.jar:5.3.24] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:793) ~[spring-aop-5.3.24.jar:5.3.24] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.3.24.jar:5.3.24] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) ~[spring-aop-5.3.24.jar:5.3.24] at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-5.3.24.jar:5.3.24] at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) ~[spring-tx-5.3.24.jar:5.3.24] at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.24.jar:5.3.24] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.24.jar:5.3.24] at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) ~[spring-aop-5.3.24.jar:5.3.24] at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) ~[spring-aop-5.3.24.jar:5.3.24] at com.group.libraryapp.service.book.BookService$$EnhancerBySpringCGLIB$$5e9f8aa4.loanBook(<generated>) ~[main/:na] at com.group.libraryapp.controller.book.BookController.loanBook(BookController.java:27) ~[main/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na] at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na] at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~[spring-web-5.3.24.jar:5.3.24] at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150) ~[spring-web-5.3.24.jar:5.3.24] at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117) ~[spring-webmvc-5.3.24.jar:5.3.24] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.24.jar:5.3.24] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.24.jar:5.3.24] at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.24.jar:5.3.24] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1071) ~[spring-webmvc-5.3.24.jar:5.3.24] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:964) ~[spring-webmvc-5.3.24.jar:5.3.24] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.24.jar:5.3.24] at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.24.jar:5.3.24] at javax.servlet.http.HttpServlet.service(HttpServlet.java:696) ~[tomcat-embed-core-9.0.69.jar:4.0.FR] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.24.jar:5.3.24] at javax.servlet.http.HttpServlet.service(HttpServlet.java:779) ~[tomcat-embed-core-9.0.69.jar:4.0.FR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.69.jar:9.0.69] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.24.jar:5.3.24] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.24.jar:5.3.24] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.24.jar:5.3.24] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.24.jar:5.3.24] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.24.jar:5.3.24] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.24.jar:5.3.24] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:177) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:891) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1784) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.69.jar:9.0.69] at java.base/java.lang.Thread.run(Thread.java:829) ~[na:na]안녕하세요! 강의 항상 잘 듣고있습니다! 다름이 아니라 31강수업을 듣다가 오류가 발생했는데 도저히 대출기능이 구현이 안되어서 여쭤봅니다! 살펴보니까 null 때문에 이 오류가 뜨는 것 같은데 DB에 맞는 데이터가 있는 상태에도 계속 뜹니다!ㅠ어디가 잘못 된 것 일까요?ㅠㅠ 코드는 깃허브에 올려놨습니다!(yul9910) 

[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)[질문 내용]http://localhost:8000은 실행이 되는데 http://localhost:8000/hello는 Error Page가 뜹니다.복사 붙여넣기로 코드를 작성했는데 어디가 잘못되었는지 모르겠습니다 ㅠㅠHelloController가 사용되지 않은 것 같은데 어디를 고쳐야하는지 모르겠습니다..경로는 다 영어 경로로 확인했습니다!

http://localhost:8080/hello-static이 아닌http://localhost:8080/hello-static.html 으로 뒤에 .html을 붙이는 이유가 해당 파일은 맵핑이 되어있지 않아서 그런건가요?

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]여기에 질문 내용을 남겨주세요.안녕하세요.Test에서 아래 메서드를 추가하여 메모리에 있는 값을 초기화 시키는 것은 이해했습니다.@AfterEach public void afterEach() { repository.clearStore(); }  그런데, 아래 메서드를 추가하기 전에, 왜 MemoryMemberRepository class에서, 아래 메서드를 추가해야 하는지 모르겠습니다!public void clearStore() { store.clear(); }제가 Test 코드를 처음 작성하는데 이해가 되지 않아서 질문드립니다! 감사합니다.

영한쌤은 create, drop 이런식으로 나왔는데 저만 안뜨는건가요?

public int getMinIndex(int[] fruit) { int min = getMin(fruit); for(int i = 0; i < 3; i++) { if(fruit[i] == min) return i; } return 0; }아니라public int getMinIndex(int[] fruit) { int min = getMin(fruit); int i; for(int i = 0; i < 3; i++) { if(fruit[i] == min) return i; } return i; }해야 되는거 아닌가요?첫번째 코드처럼 하면 무조건 최솟값인 과일의 인덱스로 0(사과)가 반환되는거 아닌가요??첫번째 코드가 맞는 이유는 처음 등장하는 return이 메소드를 종료시키므로 이후의 구문은 실행되지 않기 때문인가요?!

일단 jpa로 진행하던중 오류가 났습니다..Member.javaMember.javapackage hwang.hwangspring.domain; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; @Entity //->JPA가 관리하는 ENTITY라는 의미가 됨 public class Member { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; //시스템이 정해줌 private String name; //고객이 회원가입할 때 적는 이름 public Long getId() { return id; } public void setId(Long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } } JpaMemberRepository.java import javax.persistence.EntityManager; import java.util.List; import java.util.Optional; public class JpaMemberRepository implements MemberRepository{ private final EntityManager em; public JpaMemberRepository(EntityManager em) { this.em = em; } @Override public Member save(Member member) { em.persist(member); return member; } @Override public Optional<Member> findById(Long id) { Member member = em.find(Member.class,id); return Optional.ofNullable(member); } @Override public Optional<Member> findByName(String name) { List<Member> result= em.createQuery("select m from Member m where m.name =:name",Member.class) .setParameter("name",name) .getResultList(); return result.stream().findAny(); } @Override public List<Member> findAll() { List<Member> result = em.createQuery("select m from Member m", Member.class).getResultList(); return result; //객체 자체를 return, } } Springconfig.javaimport org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import javax.persistence.Entity; import javax.persistence.EntityManager; import javax.sql.DataSource; @Configuration public class SpringConfig { private final EntityManager em; private final DataSource dataSource; @Autowired public SpringConfig(DataSource dataSource,EntityManager em){ this.dataSource=dataSource; this.em=em; } @Bean public MemberService memberService() { // 이 로직을 등록해서 스프링 빈에 등록을 해줌 return new MemberService((MemoryMemberRepository) memberRepository()); //MemberService()가 스트링빈에 등록됨 } @Bean public MemberRepository memberRepository(){ return new JpaMemberRepository(em); } } MemberIntegrataionTest를 실행할경우package hwang.hwangspring.service; import hwang.hwangspring.domain.Member; import hwang.hwangspring.repository.MemberRepository; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.transaction.annotation.Transactional; import static org.assertj.core.api.Assertions.assertThat; import static org.junit.jupiter.api.Assertions.assertEquals; import static org.junit.jupiter.api.Assertions.assertThrows; @SpringBootTest @Transactional class MemberServiceIntegrationTest { @Autowired MemberService memberService; @Autowired MemberRepository memberRepository; @Test public void 회원가입() throws Exception { //Given Member member = new Member(); member.setName("hello"); //When Long saveId = memberService.join(member); //Then Member findMember = memberRepository.findById(saveId).get(); assertEquals(member.getName(), findMember.getName()); } @Test public void 중복_회원_예외() throws Exception { //Given Member member1 = new Member(); member1.setName("spring"); Member member2 = new Member(); member2.setName("spring"); //When memberService.join(member1); IllegalStateException e = assertThrows(IllegalStateException.class, () -> memberService.join(member2));//예외가 발생해야 한다. assertThat(e.getMessage()).isEqualTo("이미 존재하는 회원입니다."); } }아래와 같은 오류가 뜹니다 ㅠㅠ java.lang.IllegalStateException: Failed to load ApplicationContextat org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:98)at org.springframework.test.context.support.DefaultTestContext.getApplicationContext(DefaultTestContext.java:124)at org.springframework.test.context.web.ServletTestExecutionListener.setUpRequestContextIfNecessary(ServletTestExecutionListener.java:190)at org.springframework.test.context.web.ServletTestExecutionListener.prepareTestInstance(ServletTestExecutionListener.java:132)at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:248)at org.springframework.test.context.junit.jupiter.SpringExtension.postProcessTestInstance(SpringExtension.java:138)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$8(ClassBasedTestDescriptor.java:363)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.executeAndMaskThrowable(ClassBasedTestDescriptor.java:368)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$invokeTestInstancePostProcessors$9(ClassBasedTestDescriptor.java:363)at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195)at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655)at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(StreamSpliterators.java:312)at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:735)at java.base/java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Streams.java:734)at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.invokeTestInstancePostProcessors(ClassBasedTestDescriptor.java:362)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$instantiateAndPostProcessTestInstance$6(ClassBasedTestDescriptor.java:283)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.instantiateAndPostProcessTestInstance(ClassBasedTestDescriptor.java:282)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$4(ClassBasedTestDescriptor.java:272)at java.base/java.util.Optional.orElseGet(Optional.java:369)at org.junit.jupiter.engine.descriptor.ClassBasedTestDescriptor.lambda$testInstancesProvider$5(ClassBasedTestDescriptor.java:271)at org.junit.jupiter.engine.execution.TestInstancesProvider.getTestInstances(TestInstancesProvider.java:31)at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$prepare$0(TestMethodTestDescriptor.java:102)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:101)at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.prepare(TestMethodTestDescriptor.java:66)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$prepare$2(NodeTestTask.java:123)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.prepare(NodeTestTask.java:123)at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:90)at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53)at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57)at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:232)at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:55)Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'memberController' defined in file [C:\Users\hyk46\hwang-spring\hwang-spring\out\production\classes\hwang\hwangspring\controller\MemberController.class]: Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberService' defined in class path resource [hwang/hwangspring/SpringConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [hwang.hwangspring.service.MemberService]: Factory method 'memberService' threw exception; nested exception is java.lang.ClassCastException: class hwang.hwangspring.repository.JpaMemberRepository cannot be cast to class hwang.hwangspring.repository.MemoryMemberRepository (hwang.hwangspring.repository.JpaMemberRepository and hwang.hwangspring.repository.MemoryMemberRepository are in unnamed module of loader 'app')at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800)at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:229)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1372)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1222)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:955)at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:920)at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:731)at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408)at org.springframework.boot.SpringApplication.run(SpringApplication.java:307)at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:136)at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContextInternal(DefaultCacheAwareContextLoaderDelegate.java:141)at org.springframework.test.context.cache.DefaultCacheAwareContextLoaderDelegate.loadContext(DefaultCacheAwareContextLoaderDelegate.java:90)... 71 moreCaused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberService' defined in class path resource [hwang/hwangspring/SpringConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [hwang.hwangspring.service.MemberService]: Factory method 'memberService' threw exception; nested exception is java.lang.ClassCastException: class hwang.hwangspring.repository.JpaMemberRepository cannot be cast to class hwang.hwangspring.repository.MemoryMemberRepository (hwang.hwangspring.repository.JpaMemberRepository and hwang.hwangspring.repository.MemoryMemberRepository are in unnamed module of loader 'app')at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658)at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:486)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1352)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1195)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:582)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1391)at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1311)at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887)at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)... 89 moreCaused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [hwang.hwangspring.service.MemberService]: Factory method 'memberService' threw exception; nested exception is java.lang.ClassCastException: class hwang.hwangspring.repository.JpaMemberRepository cannot be cast to class hwang.hwangspring.repository.MemoryMemberRepository (hwang.hwangspring.repository.JpaMemberRepository and hwang.hwangspring.repository.MemoryMemberRepository are in unnamed module of loader 'app')at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653)... 103 moreCaused by: java.lang.ClassCastException: class hwang.hwangspring.repository.JpaMemberRepository cannot be cast to class hwang.hwangspring.repository.MemoryMemberRepository (hwang.hwangspring.repository.JpaMemberRepository and hwang.hwangspring.repository.MemoryMemberRepository are in unnamed module of loader 'app')at hwang.hwangspring.SpringConfig.memberService(SpringConfig.java:29)at hwang.hwangspring.SpringConfig$$EnhancerBySpringCGLIB$$f992599.CGLIB$memberService$0(<generated>)at hwang.hwangspring.SpringConfig$$EnhancerBySpringCGLIB$$f992599$$FastClassBySpringCGLIB$$aa36e038.invoke(<generated>)at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331)at hwang.hwangspring.SpringConfig$$EnhancerBySpringCGLIB$$f992599.memberService(<generated>)at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.base/java.lang.reflect.Method.invoke(Method.java:566)at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)... 104 more

7강에서 PostMapping과 GetMapping에 URL로 /user을 입력했는데 홈페이지에서 사용자 등록버튼을 누르거나 목록창을 눌러도 url은 전혀 변하지 않습니다. url로 클라이언트가 요청을해서 서버가 응답하는 거라고 알고있는데 어떻게 이렇게 작용하는건가요?url이 바뀌지 않아도 요청을 받아들이는건가요?

toad 를 사용할수가 없는데 sql developer 를 사용하여 수업참여 가능한가요?

Database "~" not found 떠서 오류 뜨시는분들이렇게 base에 jpashop.mv.db가 생성되지 않아서 생기는 문제같습니다../h2.sh로 h2 실행한 후 맥이든 윈도우든 상단이나 우측하단의 h2아이콘을 클릭한 후 create new database를 생성합니다. 여기서 그냥 넣게되면 h2의 bin폴더에 생성되면서 제대로 실행이 안됩니다.그래서 제가 해결한 방법은 h2폴더의 bin폴더에서를 기준으로 한 절대경로로 base까지 이동한 다음 마지막에 jpashop을 기입한다면 원준님 사진처럼 나옵니다. 그리고 해결됩니다 ex)../../../../jpashop 이런식으로요강의 듣느라 고생많으신데 빨리 해결하고 넘어가시면 좋겠습니다!정리하자면1. ./h2.sh 실행2. h2아이콘에서 create new database3. 절대경로로 h2/bin에서 base경로까지 이동해 jpashop으로 파일이름 넣기4. jdbc:h2:tcp://localhost/~/jpashop 이후 실행되실겁니다

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)[질문 내용]여기에 질문 내용을 남겨주세요. 1:10 쯤 testcase 를 위한 package 생성을 하는데 제 파일은 패키지가 아닌건지 패키지를 생성할 수 있는 버튼이 뜨지 않습니다. 왜 이럴까요 ㅜㅜ

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)[질문 내용]여기에 질문 내용을 남겨주세요.Test자바 파일 실행시,"C:\Program Files\Java\jdk-20\bin\java.exe" -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.1.1\lib\idea_rt.jar=57983:C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.1.1\bin" -Dfile.encoding=UTF-8 -Dsun.stdout.encoding=UTF-8 -Dsun.stderr.encoding=UTF-8 -classpath "C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.1.1\lib\idea_rt.jar;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.1.1\plugins\junit\lib\junit5-rt.jar;C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.1.1\plugins\junit\lib\junit-rt.jar;C:\Users\Me\Desktop\김씨꺼\jpashop\out\test\classes;C:\Users\Me\Desktop\김씨꺼\jpashop\out\production\classes;C:\Users\Me\Desktop\김씨꺼\jpashop\out\production\resources;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-data-jpa\3.1.1\f129ea070d7d7152c984189301dc751be45f9a38\spring-boot-starter-data-jpa-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-thymeleaf\3.1.1\69e351b19ee4fa37ff7cb851354498a880b5a937\spring-boot-starter-thymeleaf-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-web\3.1.1\f2c2d9e35430e4b4a98ad91780bb9b2d1deec08\spring-boot-starter-web-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-devtools\3.1.1\fca82661c18f1ca18614d308523c0d404d3753b9\spring-boot-devtools-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\junit\junit\4.13.1\cdd00374f1fee76b11e2a9d127405aa3f6be5b6a\junit-4.13.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-test\3.1.1\6e69181686ec1c9af137f038ddf6cd1830a2af19\spring-boot-starter-test-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-aop\3.1.1\f72362878ded668b8c3a12f8465ced98ef3fb188\spring-boot-starter-aop-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-jdbc\3.1.1\8e6bdc511fc9ade17c09fcc20a0f6a44fa39a876\spring-boot-starter-jdbc-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.hibernate.orm\hibernate-core\6.2.5.Final\3c0d24dd2f66920aeeee666779ca7391f20bc69c\hibernate-core-6.2.5.Final.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.data\spring-data-jpa\3.1.1\815665072b1cfa83aa3175228539e3e468db15e0\spring-data-jpa-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework\spring-aspects\6.0.10\4a6a423ce6fdc474a327f7b7a7818dedc33c504f\spring-aspects-6.0.10.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter\3.1.1\cf74eeaef5a265c75dd89fea829391bf08efdb6c\spring-boot-starter-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.thymeleaf\thymeleaf-spring6\3.1.1.RELEASE\deb52ef921a4ac5132fedb7ebfc2bc1dad4382b3\thymeleaf-spring6-3.1.1.RELEASE.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-json\3.1.1\8dc99860536a6a858de6caaeb67f84d7af8a30a3\spring-boot-starter-json-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-starter-tomcat\3.1.1\927f80fb9d8816209420223d1a1a09e730ea78e6\spring-boot-starter-tomcat-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework\spring-webmvc\6.0.10\af3f040747f4bfbcdb96140f8c9d252d3a6a4ef1\spring-webmvc-6.0.10.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework\spring-web\6.0.10\e61defa7908bf7a499f000dab8ef7691c2aa75c1\spring-web-6.0.10.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-autoconfigure\3.1.1\618ec717eef4ba2ff347c7713150aac8e73fe233\spring-boot-autoconfigure-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot\3.1.1\f8f80c1453c8fe0e08a6235f983d8daf571d3e3\spring-boot-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.hamcrest\hamcrest-core\2.2\3f2bd07716a31c395e2837254f37f21f0f0ab24b\hamcrest-core-2.2.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-test-autoconfigure\3.1.1\4d6b05666438577e2fa7a1cbad6f58956bee34d7\spring-boot-test-autoconfigure-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.springframework.boot\spring-boot-test\3.1.1\8481164eedc07955e903cb4442dc23a868eecb8d\spring-boot-test-3.1.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\com.jayway.jsonpath\json-path\2.8.0\b4ab3b7a9e425655a0ca65487bbbd6d7ddb75160\json-path-2.8.0.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\jakarta.xml.bind\jakarta.xml.bind-api\4.0.0\bbb399208d288b15ec101fa4fcfc4bd77cedc97a\jakarta.xml.bind-api-4.0.0.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\net.minidev\json-smart\2.4.11\cc5888f14a5768f254b97bafe8b9fd29b31e872e\json-smart-2.4.11.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.assertj\assertj-core\3.24.2\ebbf338e33f893139459ce5df023115971c2786f\assertj-core-3.24.2.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.hamcrest\hamcrest\2.2\1820c0968dba3a11a1b30669bb1f01978a91dedc\hamcrest-2.2.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.junit.jupiter\junit-jupiter\5.9.3\72e840501e1550e9799c9a5cc9483d7d6b29e0ba\junit-jupiter-5.9.3.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.mockito\mockito-junit-jupiter\5.3.1\d6ac0f6d54addf02def4ba1213f73a15ae6c2308\mockito-junit-jupiter-5.3.1.jar;C:\Users\Me\.gradle\caches\modules-2\files-2.1\org.mockito\mockito-core\5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com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit4 jpabook.jpashop.MemberRepositoryTest23:14:14.131 [main] INFO org.springframework.test.context.support.AnnotationConfigContextLoaderUtils -- Could not detect default configuration classes for test class [jpabook.jpashop.MemberRepositoryTest]: MemberRepositoryTest does not declare any static, non-private, non-final, nested classes annotated with @Configuration.23:14:14.250 [main] INFO org.springframework.boot.test.context.SpringBootTestContextBootstrapper -- Found @SpringBootConfiguration jpabook.jpashop.JpashopApplication for test class jpabook.jpashop.MemberRepositoryTest처럼 뜨고 DB에 MEMBER 테이블이 생성되지 않습니다. 무엇이 문제일까요