WS-02-intro-to-oop/src/CourseRegistrationStarter/Student.java

package CourseRegistrationStarter;
import java.util.ArrayList;

public class Student {
    private String name;
    private String studentId;
    private ArrayList<Course> registeredCourses;

    public Student(String name, String studentId) {
        this.name = name;
        this.studentId = studentId;
        this.registeredCourses = new ArrayList<>();
    }

    public String getName() {
        return name;
    }

    public String getStudentId() {
        return studentId;
    }

    public boolean addCourse(Course c) {
        if(registeredCourses.contains(c)){
            System.out.println("Studend registered in this corse!");
            return false;
        }
        if(c.reduceCapacity()){
            registeredCourses.add(c);
            System.out.println("corse added:" + c.getCourseName());
            return true;
        }
        System.out.println("corse is full");
        return false;
    }

    public boolean dropCourse(Course c) {
        if(registeredCourses.remove(c)){
            c.increaseCapacity();
            System.out.println("corse dropped :" + c.getCourseName());
            return true;
        }
        System.out.println("studend is not registered in this corse!");
        return false;
    }

    public void showRegisteredCourses() {
        System.out.println("registered corses for " + name + ":");
        if(registeredCourses.isEmpty()){
            System.out.println("no corses registered");
            return;
        }
        for(Course c : registeredCourses){
            System.out.println("- " + c.getCourseName() + "/" + c.getCourseCode());
        }
    }
}