Question

Description: This assignment is going to evaluate your overall knowledge of the Java Programming. You shall implement a program which can store and retrieve student list. The program has a menu that you can take input from console, and the user can choose between the items. The program data is in the HwO8FinalProjectStudentList.txt file. Required Items: 1. The program must show a menu to user and ask the user can either choose between the options or press q to quit the program 2. The Menu is as bellow CSC3020 Final Project 1. Show student list 2. Add a New Student 3. Edit a student by Id 4. Delete a student 5. Find a student by Id 6. Find student(s) by First Name 7. Find a student(s) by Last Name Please q to exit or Press 1-7:

Hw08FinalProjectStudentList.txt

1,Simon,Jefferson,gy3085,4.0,2019
2,John,Johnson,xy1242,3.9,2019
3,Kayla,Anderson,as1324,3.8,2019
4,David,Kidman,re5423,3.8,2017
5,Mary,Coleman,ze7698,3.8,2018

Answer 1

Note: Could you plz go through this code and let me know if u need any changes in this.Thank You
=================================

Hw08FinalProjectStudentList.txt (Input file)

1,Simon,Jefferson,gy3085,4.0,2019
2,John,Johnson,xy1242,3.9,2019
3,Kayla,Anderson,as1324,3.8,2019
4,David,Kidman,re5423,3.8,2017
5,Mary,Coleman,ze7698,3.8,2018

======================================

// Student.java

public class Student implements Comparable<Student>{
   private int id;
   private String firstName;
   private String lastName;
   private String accessId;
   private double gpa;
   private int entranceYear;

   /**
   * @param id
   * @param firstName
   * @param lastName
   * @param accessId
   * @param gpa
   * @param entranceYear
   */
   public Student(int id, String firstName, String lastName, String accessId,
           double gpa, int entranceYear) {
       this.id = id;
       this.firstName = firstName;
       this.lastName = lastName;
       this.accessId = accessId;
       this.gpa = gpa;
       this.entranceYear = entranceYear;
   }

   /**
   * @return the id
   */
   public int getId() {
       return id;
   }

   /**
   * @param id
   * the id to set
   */
   public void setId(int id) {
       this.id = id;
   }

   /**
   * @return the firstName
   */
   public String getFirstName() {
       return firstName;
   }

   /**
   * @param firstName
   * the firstName to set
   */
   public void setFirstName(String firstName) {
       this.firstName = firstName;
   }

   /**
   * @return the lastName
   */
   public String getLastName() {
       return lastName;
   }

   /**
   * @param lastName
   * the lastName to set
   */
   public void setLastName(String lastName) {
       this.lastName = lastName;
   }

   /**
   * @return the accessId
   */
   public String getAccessId() {
       return accessId;
   }

   /**
   * @param accessId
   * the accessId to set
   */
   public void setAccessId(String accessId) {
       this.accessId = accessId;
   }

   /**
   * @return the gpa
   */
   public double getGpa() {
       return gpa;
   }

   /**
   * @param gpa
   * the gpa to set
   */
   public void setGpa(double gpa) {
       this.gpa = gpa;
   }

   /**
   * @return the entranceYear
   */
   public int getEntranceYear() {
       return entranceYear;
   }

   /**
   * @param entranceYear
   * the entranceYear to set
   */
   public void setEntranceYear(int entranceYear) {
       this.entranceYear = entranceYear;
   }

   /*
   * (non-Javadoc)
   *
   * @see java.lang.Object#toString()
   */
   @Override
   public String toString() {
       return "Id=" + id + ", firstName=" + firstName + ", lastName="
               + lastName + ", accessId=" + accessId + ", gpa=" + gpa
               + ", entranceYear=" + entranceYear;
   }

   @Override
   public int compareTo(Student other) {
       if(this.firstName.compareTo(other.getFirstName())<0)
           return -1;
       else if(this.firstName.compareTo(other.getFirstName())>0)
           return 1;
       return 0;
   }

}

==============================================

// StudentDAO.java

public interface StudentDAO {
void addNewStudent(Student s);
void editStudentByID(int id);
void showStudentList();
void deleteStudentByID(int id);
void findStudentByID(int id);
void findStudentByFirstName(String fname);
void findStudentByLastName(String lname);
  
}

=================================================

// StudentDAOImpl.java

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;

public class StudentDAOImpl implements StudentDAO {
   private ArrayList<Student> students;

   public StudentDAOImpl() {
       students = new ArrayList<Student>();
   }

   @Override
   public void addNewStudent(Student s) {
       students.add(s);

   }

   @Override
   public void editStudentByID(int id) {
       /*
       * Creating an Scanner class object which is used to get the inputs
       * entered by the user
       */
       Scanner sc = new Scanner(System.in);
       int index = isStudentAvailable(id);
       if (index == -1) {
           System.out.println("Student Not Found");
       } else {
           System.out.print("Enter firstname :");
           String fname = sc.next();

           System.out.print("Enter lastname :");
           String lname = sc.next();

           System.out.print("Enter access ID :");
           String accessID = sc.next();

           System.out.print("Enter Gpa :");
           double gpa = sc.nextDouble();

           System.out.print("Enter Entrance year :");
           int year = sc.nextInt();

           Student s = new Student(id, fname, lname, accessID, gpa, year);
           students.set(index, s);
           System.out.println("** Student Successfully Modified **");

       }

   }

   private int isStudentAvailable(int id) {
       for (int i = 0; i < students.size(); i++) {
           if (students.get(i).getId() == id)
               return i;
       }
       return -1;
   }

   @Override
   public void showStudentList() {
       for(int i=0;i<students.size();i++)
       {
           System.out.println(students.get(i));
       }

   }

   @Override
   public void deleteStudentByID(int id) {
       int index = isStudentAvailable(id);
       if (index == -1) {
           System.out.println("Student Not Found");
       } else {
           students.remove(index);
           System.out.println("** Student Successfully Deleted **");
       }
      

   }

   @Override
   public void findStudentByID(int id) {
       int index = isStudentAvailable(id);
       if (index == -1) {
           System.out.println("Student Not Found");
       } else {
           System.out.println(students.get(index));
       }

   }

   @Override
   public void findStudentByFirstName(String fname) {
       int flag=0;
       for(int i=0;i<students.size();i++)
       {
           if(students.get(i).getFirstName().equalsIgnoreCase(fname))
           {
               System.out.println(students.get(i));
           flag=1;
           }
       }
       if(flag==0)
           System.out.println("Student not found");

   }

   @Override
   public void findStudentByLastName(String lname) {
       int flag=0;
       for(int i=0;i<students.size();i++)
       {
           if(students.get(i).getLastName().equalsIgnoreCase(lname))
           {
               System.out.println(students.get(i));
       flag=1;
           }
       }
       if(flag==0)
           System.out.println("Student not found");
   }

   public void save() throws IOException
   {
       FileWriter fw = new FileWriter(new File("Hw08FinalProjectStudentList.txt"));
       for(int i=0;i<students.size();i++)
       {
           fw.write(students.get(i).getId()+","+students.get(i).getFirstName()+","+students.get(i).getLastName()+","+students.get(i).getAccessId()+","+students.get(i).getGpa()+","+students.get(i).getEntranceYear()+"\n");
       }
       fw.close();
   }
}

=============================================

// Hw08FinalProject.java

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;

public class Hw08FinalProject {

   public static void main(String[] args) throws IOException {
       /*
       * Creating an Scanner class object which is used to get the inputs
       * entered by the user
       */
       Scanner read = new Scanner(System.in);
       int id, choice = 0;
       String firstName, lastName, accessId, choice1;
       double gpa;
       int entranceYear;
       StudentDAOImpl simpl = new StudentDAOImpl();

       try {
           Scanner sc = new Scanner(
                   new File("Hw08FinalProjectStudentList.txt"));
           while (sc.hasNext()) {
               String line = sc.nextLine();
               String arr[] = line.split(",");
               id = Integer.parseInt(arr[0]);
               firstName = arr[1];
               lastName = arr[2];
               accessId = arr[3];
               gpa = Double.parseDouble(arr[4]);
               entranceYear = Integer.parseInt(arr[5]);
               Student s = new Student(id, firstName, lastName, accessId, gpa,
                       entranceYear);
               simpl.addNewStudent(s);
           }

           sc.close();
          

           while (true) {
               System.out.println("\n1.Show Student List");
               System.out.println("2.Add a new Student");
               System.out.println("3.Edit a Student by Id");
               System.out.println("4.Delete a Student");
               System.out.println("5.Find a Student by ID");
               System.out.println("6.Find a Student(s) by First Name");
               System.out.println("7.Find a srudent(s) by Last Name");
               System.out.println("Please q to exit or Press (1-7) :");
               choice1 = read.next();
               if (choice1.equalsIgnoreCase("q")) {
               simpl.save();
                   break;
               } else {
                   choice = Integer.parseInt(choice1);
                   switch (choice) {
                   case 1: {
                       simpl.showStudentList();
                       continue;
                   }
                   case 2: {
                      

                       System.out.print("Enter Id :");
                       int ID = read.nextInt();
                      
                       System.out.print("Enter firstname :");
                       String fname = read.next();

                       System.out.print("Enter lastname :");
                       String lname = read.next();

                       System.out.print("Enter access ID :");
                       String accessID = read.next();

                       System.out.print("Enter Gpa :");
                       gpa = read.nextDouble();

                       System.out.print("Enter Entrance year :");
                       int year = read.nextInt();

                       Student s = new Student(ID, fname, lname, accessID, gpa, year);
                       simpl.addNewStudent(s);
                      
                       continue;
                   }
                   case 3: {

                       System.out.print("Enter Student Id :");
                       id = read.nextInt();
                      
                       simpl.editStudentByID(id);
                       continue;
                   }
                   case 4: {
                       System.out.print("Enter Student Id :");
                       id = read.nextInt();
                      
                       simpl.deleteStudentByID(id);
                       continue;
                   }
                   case 5: {
                       System.out.print("Enter Student Id :");
                       id = read.nextInt();
                      
                       simpl.findStudentByID(id);
                       continue;
                   }
                   case 6: {
                       System.out.print("Enter firstname :");
                       firstName = read.next();
                      
                       simpl.findStudentByFirstName(firstName);
                       continue;
                   }
                   case 7: {
                       System.out.print("Enter lastname :");
                       lastName = read.next();
                      
                       simpl.findStudentByLastName(lastName);
                       continue;
                   }

                   }
               }
           }

       } catch (FileNotFoundException e) {
           System.out.println(e.getMessage());
       }

   }

}
==============================================

Output:

1.Show Student List
2.Add a new Student
3.Edit a Student by Id
4.Delete a Student
5.Find a Student by ID
6.Find a Student(s) by First Name
7.Find a srudent(s) by Last Name
Please q to exit or Press (1-7) :
1
Id=1, firstName=Simon, lastName=Jefferson, accessId=gy3085, gpa=4.0, entranceYear=2019
Id=2, firstName=John, lastName=Johnson, accessId=xy1242, gpa=3.9, entranceYear=2019
Id=3, firstName=Kayla, lastName=Anderson, accessId=as1324, gpa=3.8, entranceYear=2019
Id=4, firstName=David, lastName=Kidman, accessId=re5423, gpa=3.8, entranceYear=2017
Id=5, firstName=Mary, lastName=Coleman, accessId=ze7698, gpa=3.8, entranceYear=2018

1.Show Student List
2.Add a new Student
3.Edit a Student by Id
4.Delete a Student
5.Find a Student by ID
6.Find a Student(s) by First Name
7.Find a srudent(s) by Last Name
Please q to exit or Press (1-7) :
2
Enter Id :6
Enter firstname :Pat
Enter lastname :Simkox
Enter access ID :ze5467
Enter Gpa :3.4
Enter Entrance year :2019

1.Show Student List
2.Add a new Student
3.Edit a Student by Id
4.Delete a Student
5.Find a Student by ID
6.Find a Student(s) by First Name
7.Find a srudent(s) by Last Name
Please q to exit or Press (1-7) :
4
Enter Student Id :2
** Student Successfully Deleted **

1.Show Student List
2.Add a new Student
3.Edit a Student by Id
4.Delete a Student
5.Find a Student by ID
6.Find a Student(s) by First Name
7.Find a srudent(s) by Last Name
Please q to exit or Press (1-7) :
1
Id=1, firstName=Simon, lastName=Jefferson, accessId=gy3085, gpa=4.0, entranceYear=2019
Id=3, firstName=Kayla, lastName=Anderson, accessId=as1324, gpa=3.8, entranceYear=2019
Id=4, firstName=David, lastName=Kidman, accessId=re5423, gpa=3.8, entranceYear=2017
Id=5, firstName=Mary, lastName=Coleman, accessId=ze7698, gpa=3.8, entranceYear=2018
Id=6, firstName=Pat, lastName=Simkox, accessId=ze5467, gpa=3.4, entranceYear=2019

1.Show Student List
2.Add a new Student
3.Edit a Student by Id
4.Delete a Student
5.Find a Student by ID
6.Find a Student(s) by First Name
7.Find a srudent(s) by Last Name
Please q to exit or Press (1-7) :
q

=====================Could you plz rate me well.Thank You