package com.in28minutes.springboot.learnjapandhibernate.course; import jakarta.persistence.Column; import jakarta.persistence.Entity; import jakarta.persistence.Id; @Entity public class Course { @Id private long id; private String name; private String author; public Course() { } @Override public String toString() { return "Course [id=" + id + ", name=" + name + ", author=" + author + "]"; } publ..