Building on the Student and course classes from a previous lab, imple.pdf

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Building on the Student and course classes from a previous lab, implement the drop_student () instance method in the Course class, which removes a student (by last name) from the course roster. If the student is not found in the course roster, no student should be dropped. The file main.py will contain both the Student class and the Course class. Copy your student class from the previous lab, or write a Student class with the following instance methods: - A Student constructor that takes parameters for self, first, last, and gpa and sets the instance variables - A method get_first(self) - return student's first name - A method get_last(self) - return student's last name - A method get_gpa(self) - return student's gpa Ex: If a new Student object is created with Andrew, Woo, 3.6, the default return values are: Andrew Woo 3.6 Copy your Course class from the previous lab (you do NOT need the print statements), or write a Course class with the following instance methods:.

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import school.*; import school.courses.*; public class Main { public static void main(String[] args) { Teacher phil = new Teacher(\"Phil\"); Teacher bill = new Teacher(\"Bill\"); Teacher lil = new Teacher(\"Lil\"); Teacher joe = new Teacher(\"Joe\"); Course[] courses = { new NetworkCourse(15, phil), new SwingCourse(30, bill), new APIDesignCourse(50, lil), new PerformanceCourse(5, joe) }; School school = new School(courses); Student ludwig = new Student(\"Ludwig\"); Student cam = new Student(\"Cam\"); Student daniel = new Student(\"Daniel\"); ludwig.setPreferredCourses(NetworkCourse.class, SwingCourse.class); //give students preferred classes if they have them cam.setPreferredCourses(APIDesignCourse.class, PerformanceCourse.class, NetworkCourse.class); school.register(ludwig, cam, daniel); /* * Below is where we test by printing things out */ test(school); } static void test(School school) { /* * Prints all the students in the school, all the courses in the school, and which course each student has */ System.out.println(\"Students and their courses:\"); for(Student student : school.getStudents()) { if(student != null) { String message = student.getName() + \" is taking\"; //message will reset for each new student, since we do = and not += here for(Course course : student.getCourses()) message += \" - \" + course.getName(); System.out.println(message); } } System.out.println(\"\ Courses and their students:\"); for(Course course : school.getCourses()) { String message = course.getName() + \" is taken by\"; for(Student student : course.getStudents()) { if(student != null) message += \" - \" + student.getName(); } System.out.println(message); } } } School.java package school; import java.util.*; public class School { private Course[] courses; private Student[] students; public School(Course[] courses) { this.courses = courses; //ive been told that constructors shouldnt contain logic. is there any other way to handle this? int numOfStudents = 0; for(Course course : courses) numOfStudents += course.getStudents().length; students = new Student[numOfStudents]; } public void register(Student...students) { //this method is pretty messy, and loops quite a few times. any suggestions? if(isFull()) throw new IllegalStateException(\"Cannot register anymore students at this time\"); for(Student student : students) { if(Arrays.asList(this.students).contains(student)) //wrapping the array every loop. is there any better way to do this, without creating my own private contains method for students? throw new IllegalArgumentException(\"You cannot add the same student to a school twice\"); //should I be throwing a runtime exception here? or should i just continue with the rest of the students for(Course course : courses) { if(student.prefersCourse(course) && !course.isFull()) student.assignCourse(course); } verifyStudent(student); //make sure the student is ready for school student.setSchool(this); for(int i = 0; i < this.students.length; i++) { if(this.students[i].

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