1. 클래스 생성package com.demo.domain;import java.util.Date;import org.hibernate.annotations.ColumnDefault;import org.hibernate.annotations.DynamicInsert;import org.hibernate.annotations.DynamicUpdate;import jakarta.persistence.Entity;import jakarta.persistence.GeneratedValue;import jakarta.persistence.GenerationType;import jakarta.persistence.Id;import jakarta.persistence.JoinColumn;import jakarta.p..
