Question

Write a class XXX_Course

• • A course has a name, a course number, a department code (for example, CS, MATH) and a room number.
• • Include a static variable used to assign the course number to each Course in the constructor. The value of the variable will start at 1000.
• • Write the instance variables, the accessors (getters), the mutators (setters) and two constructors for the class. One of the constructors should be the no args constructor

Write a second class, XXX_ TestCourse, which will have a main method.

• • Create an Array of Course objects, which can hold 3 elements.
• • Using a loop:
  • • Ask the user for the name, department and room number for 3 courses.
  • • Create course objects.
  • • Store the objects in the Array
• • At the end, traverse the array of courses and print each course on a separate line.

Sample Output

Enter Dept

CS

Enter room number

204

Enter Course name

CPS 2231

Enter Dept

CS

Enter room number

220

Enter Course name

CPS 2232

Enter Dept

CS

Enter room number

204

Enter Course name

CPS 2232

Printing the courses

Course Name: CPS 1231 Dept: CS CourseNumber: 1000 Room 204

Course Name: CPS 2231 Dept: CS CourseNumber: 1001 Room 220

Course Name: CPS 2232 Dept: CS CourseNumber: 1002 Room 204

Answer 1

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Code:

================ XXX_Course.java===========

public class XXX_Course

{

    private static int cNumber =1000;

   

    //private data members

    private String name;

    private String departmentCode;

    private int roomNumber;

    private int courseNumber;

   

    //default constructor

    public XXX_Course()

    {

        name ="";

        departmentCode ="";

        roomNumber =0;

        courseNumber = cNumber++;

    }

   

    //parameterized constructor

    public XXX_Course(String cname,String dep,int room)

    {

        name = cname;

        departmentCode = dep;

        roomNumber = room;

        courseNumber = cNumber++;

    }

   

    //accessors

    public String getName()

    {

        return name;

    }

   

    public String getDepartmentCode()

    {

        return departmentCode;

    }

   

    public int getRoomNumber()

    {

        return roomNumber;

    }

   

    public int getcNumber()

    {

        return courseNumber;

    }

   

    //mutators

    public void setName(String cname)

    {

        name = cname;

    }

   

    public void setDepartmentCode(String dep)

    {

        departmentCode = dep;

    }

    public void setRoomNumber(int room)

    {

        roomNumber = room;

    }

   

    //string representation of objects

    public String toString()

    {

        return "Course Name: " + name + " Dept: " + departmentCode + " CourseNumber: " + courseNumber + " Room " + roomNumber;

    }

   

}

============ XXX_ TestCourse.java=========

import java.util.*;

public class XXX_ TestCourse

{

                public static void main(String[] args) {

                               

                                XXX_Course[] courses = new XXX_Course[3];

                                String dept,courseName;

                                int room;

                                Scanner scnr = new Scanner(System.in);

                                //using loop take user input to create objects of XXX_Course class and fill the array

                                for (int i =0;i <3 ;i++ )

                                {

                                    System.out.println("Enter Dept");

                                    dept = scnr.nextLine();

                                    System.out.println("Enter room number");

                                    room = Integer.parseInt(scnr.nextLine());

                                    System.out.println("Enter Course name");

                                    courseName = scnr.nextLine();

                                   

                                    courses[i] = new XXX_Course(courseName,dept,room);

                                }

                               

                                System.out.println("Printing the courses");

                                //display the data

                                for (int i =0;i <3 ;i++ )

                                {

                                    System.out.println(courses[i]);

                                }

                               

                }

}

==========screen shot of the code========

Output: