package limq.hibernate.vo;import java.io.Serializable;import java.util.*;/** * A class that represents a row in the 'classes' table.  * This class may be customized as it is never re-generated  * after being created. */public class Classes    extends AbstractClasses    implements Serializable{    /**     * Simple constructor of Classes instances.     */    public Classes()    {    }    /**     * Constructor of Classes instances given a simple primary key.     * @param id     */    public Classes(java.lang.Integer id)    {        super(id);    }    /* Add customized code below */    private Set students = new HashSet();    private Set history = new HashSet();    private ClassesInfo classinfo;    private Teachers teacher;    private Courses course;    /**     * @return 返回 students。     */    public Set getStudents() {        return students;    }    /**     * @param students 要設置的 students。     */    public void setStudents(Set students) {        this.students = students;    }       /**     * @return 返回 teacher。     */    public Teachers getTeacher() {        return teacher;    }    /**     * @param teacher 要設置的 teacher。     */    public void setTeacher(Teachers teacher) {        this.teacher = teacher;    }    /**     * @return 返回 course。     */    public Courses getCourse() {        return course;    }    /**     * @param course 要設置的 course。     */    public void setCourse(Courses course) {        this.course = course;    }    /**     * @return 返回 classinfo。     */    public ClassesInfo getClassinfo() {        return classinfo;    }    /**     * @param classinfo 要設置的 classinfo。     */    public void setClassinfo(ClassesInfo classinfo) {        this.classinfo = classinfo;    }    /**     * @return 返回 history。     */    public Set getHistory() {        return history;    }    /**     * @param history 要設置的 history。     */    public void setHistory(Set history) {        this.history = history;    }}