import java.util.Scanner; public class LabProgram { public static Roster getInput(){ /* Reads course title, creates a roster object with the input title. Note that */ /* the course title might have spaces as in "COP 3804" (i.e. use nextLine) */ /* reads input student information one by one, creates a student object */ /* with each input student and adds the student object to the roster object */ /* the input is formatted as in the sample input and is terminated with a "q" */ /* returns the created roster */ /* Type your code here */ } public static void main(String[] args) { Roster course = getInput(); course.display(); course.dislayScores(); }} public class Student { String id; int score; public Student(String id, int score) { /* Student Employee */ /* Type your code here */ } public String getID() { /* returns student's id */ /* Type your code here */ } public int getScore() { /* returns student's score */ /* Type your code here */ }} public Student (String id, int score) {/* Student Employee}public String getID () {}public int getScore () {class Roster}/* returns student's id */public Roster (String title) {/* Roster constructor}/* returns student's score */public void add (Student s) {}public void display() {/* displays class information i.e. course title, and students' data/* (student id, student score) formatted as in the sample output}/* Adds students to the class roster */public int count (int score) {/* returns number of students in the roster whose score equals/* the method parameter score*/public void dislayScores () {/* displays scores obtained in the class and their frequencies *//*as described in the sample output */}• class LabProgram:de /4/public static Roster getInput () {/* Reads course title, creates a roster object with the input title. Note that/* the course title might have spaces as in "COP 3804" (i.e. use nextLine)/* reads input student information one by one, creates a student object *//* with each input student and adds the student object to the roster object *//* the input is formatted as in the sample input and is terminated with a "q" *//* returns the created roster Write a program that reads a course's title and enrolled student information (student id, student score) and displays the input data followedby the frequency of each score in the course. The end of input is indicated by letter q on the last line For example, for the input:10 9012 5017 8515 9042 7520 9030 7578 5061 5021 8522 50qThe output is:COP 3804 class list10 9012 5017 8515 9042 7520 9030 7578 5061 5021 8522 50COP 3804 class scores90 3504852752Given classes:ent represents a lent• class Roster represents a course• class LabProgram contains the main method that reads course data (i.e. course title and students' information), creates a Rosterobject with the input data and produces the output by calling relevant methods of the Roster objectYour task is to complete the following methods:• class Student:

Program Description: Define the Student class which gets the id and score of the student. Define…

Answered: Write a program that reads a course's…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

import java.util.Scanner;

public class LabProgram {

public static Roster getInput(){
/* Reads course title, creates a roster object with the input title. Note that */
/* the course title might have spaces as in "COP 3804" (i.e. use nextLine) */
/* reads input student information one by one, creates a student object */
/* with each input student and adds the student object to the roster object */
/* the input is formatted as in the sample input and is terminated with a "q" */
/* returns the created roster */

/* Type your code here */

}

public static void main(String[] args) {

Roster course = getInput();
course.display();
course.dislayScores();
}
}

public class Student {

String id;
int score;

public Student(String id, int score) {
/* Student Employee */
/* Type your code here */

}

public String getID() {
/* returns student's id */
/* Type your code here */

}

public int getScore() {
/* returns student's score */
/* Type your code here */
}
}

public Student (String id, int score) {
/* Student Employee
}
public String getID () {
}
public int getScore () {
class Roster
}
/* returns student's id */
public Roster (String title) {
/* Roster constructor
}
/* returns student's score */
public void add (Student s) {
}
public void display() {
/* displays class information i.e. course title, and students' data
/* (student id, student score) formatted as in the sample output
}
/* Adds students to the class roster */
public int count (int score) {
/* returns number of students in the roster whose score equals
/* the method parameter score
*/
public void dislayScores () {
/* displays scores obtained in the class and their frequencies */
/*as described in the sample output */
}
• class LabProgram:
de /
4/
public static Roster getInput () {
/* Reads course title, creates a roster object with the input title. Note that
/* the course title might have spaces as in "COP 3804" (i.e. use nextLine)
/* reads input student information one by one, creates a student object */
/* with each input student and adds the student object to the roster object */
/* the input is formatted as in the sample input and is terminated with a "q" */
/* returns the created roster

Write a program that reads a course's title and enrolled student information (student id, student score) and displays the input data followed
by the frequency of each score in the course. The end of input is indicated by letter q on the last line For example, for the input:
10 90
12 50
17 85
15 90
42 75
20 90
30 75
78 50
61 50
21 85
22 50
q
The output is:
COP 3804 class list
10 90
12 50
17 85
15 90
42 75
20 90
30 75
78 50
61 50
21 85
22 50
COP 3804 class scores
90 3
50
4
85
2
75
2
Given classes:
ent represents a lent
• class Roster represents a course
• class LabProgram contains the main method that reads course data (i.e. course title and students' information), creates a Roster
object with the input data and produces the output by calling relevant methods of the Roster object
Your task is to complete the following methods:
• class Student:

Expert Solution

Step 1

Program Description:

Define the Student class which gets the id and score of the student.
Define the Roster class which defines the following methods:
- Roster(title)
- add(Student)
- display()
- count(score)
- displayScores()
In the Main function, define the getInput function:
- Get the user input for course name and course id.
- Define a Roster object using the title.
- Get the user inputs for student id and scores.
- Create a Student object using the student information.
- Add the Student object to the Roster.
- Return the Roster object.

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