Course.java

import javax.persistence.*;
import java.io.Serializable;
import java.util.List;

@Entity
@Table(name = "courses")
public class Course implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    private String title;

    private String description;

    private String major;

    @Column(name = "created_at")
    private String createdAt;

    @ManyToMany(mappedBy = "courses")
    private List<Student> students;
    
    //TODO getters and setters for all properties
    
}