work/Course.java

package advanced;

public class AdvancedCourse {
    private int id;
    private String name;
    private int credit;
    private java.util.List<AdvancedCourse> prerequisiteCourses;
    
    public AdvancedCourse() {
        this.prerequisiteCourses = new java.util.ArrayList<>();
    }
    
    public AdvancedCourse(int id, String name, int credit) {
        this.id = id;
        this.name = name;
        this.credit = credit;
        this.prerequisiteCourses = new java.util.ArrayList<>();
    }
    
    public void addPrerequisiteCourse(AdvancedCourse course) {
        prerequisiteCourses.add(course);
    }
    
    public void removePrerequisiteCourse(AdvancedCourse course) {
        prerequisiteCourses.remove(course);
    }
    
    public int getId() {
        return id;
    }
    
    public void setId(int id) {
        this.id = id;
    }
    
    public String getName() {
        return name;
    }
    
    public void setName(String name) {
        this.name = name;
    }
    
    public int getCredit() {
        return credit;
    }
    
    public void setCredit(int credit) {
        this.credit = credit;
    }
    
    public java.util.List<AdvancedCourse> getPrerequisiteCourses() {
        return prerequisiteCourses;
    }
    
    public void setPrerequisiteCourses(java.util.List<AdvancedCourse> prerequisiteCourses) {
        this.prerequisiteCourses = prerequisiteCourses;
    }
}