StudentCourseEnrollment.java

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

@Entity
@Table(name = "student_courses")
@IdClass(StudentCourseId.class)
public class StudentCourseEnrollment implements Serializable
{
    @Id
    @ManyToOne
    @JoinColumn(name = "course_id", referencedColumnName = "id")
    private Course course;

    @Id
    @ManyToOne
    @JoinColumn(name = "student_id", referencedColumnName = "id")
    private Student student;

    @JoinColumn(name = "from_date")
    private String fromDate;

    @JoinColumn(name = "to_date")
    private String toDate;
    
    //TODO add getters and setters for all properties
}