(Enable the Course class cloneable) Rewrite the Course class in Listing 10.6 to add a clone method to perform a deep copy on the students field

/*********************************************************************************
* (Enable the Course class cloneable) Rewrite the Course class in Listing 10.6   *
* to add a clone method to perform a deep copy on the students field.            *
*********************************************************************************/
public class Exercise_13_13 {
	public static void main(String[] args) 
			throws CloneNotSupportedException {
		// Create a course object
		Course course1 = new Course("Data Structures");

		// Add three students to course1
		course1.addStudent("Peter Jones");
		course1.addStudent("Kim Smith");
		course1.addStudent("Anne kennedy");

		// Clone course1
		Course course2 = course1.clone();

		// Add three students to course2
		course2.addStudent("Jamal Jones");
		course2.addStudent("Steve Smith");

		// Display students in course1
		System.out.println("\nNumber of students in course1: "
			+ course1.getNumberOfStudents());
		String[] students = course1.getStudents();
		for (int i = 0; i < course1.getNumberOfStudents(); i++)
			System.out.print(students[i] + ", ");
		System.out.println();

		// Display students in course2
		System.out.println("\nNumber of students in course2: "
			+ course2.getNumberOfStudents());
		String[] students2 = course2.getStudents();
		for (int i = 0; i < course2.getNumberOfStudents(); i++)
			System.out.print(students2[i] + ", ");
		System.out.println();
	}
}

Course.java

public class Course implements Cloneable {
	private String courseName;
	private String[] students = new String[100];
	private int numberOfStudents;

	public Course(String courseName) {
		this.courseName = courseName;
	}

	public void addStudent(String student) {
		students[numberOfStudents] = student;
		numberOfStudents++;
	}

	public String[] getStudents() {
		return students;
	}

	public int getNumberOfStudents() {
		return numberOfStudents;
	}

	public String getCourseName() {
		return courseName;
	}

	@Override /** Override the proceted clone method defined in 
		the Object class, and strengthen its accessibility */
	public Course clone() throws CloneNotSupportedException {
		// Perform a shallow copy
		Course courseClone =	(Course)super.clone();
		// Deep copy on students
		courseClone.students = students.clone();
		return courseClone;
	}

	public void dropStudent(String student) {
		// Left as an exercise in Programming Exercise 10.9
	}
}