Question

Create a java project and create Student class.

This class should have the following attributes, name : String age : int id : String gender : String gpa : double and toString() method that returns the Student's detail. Your project should contain a TestStudent class where you get the student's info from user , create student's objects and save them in an arralist.

You should save at least 10 student objects in this arraylist using loop statement. Then iterate through the arralist ,

1. print the details of all the students.

2. print female to male ratio (example female to male ratio is 6 : 4)

***** Please write the program in java code not in any other programming languages. Thank you

Answer 1

/************************Student.java************************************/

public class Student {

   /**
   * Data fields
   */
   private String name;
   private int age;
   private String gender;
   private String gpa;

   /**
   *
   * @param name
   * @param age
   * @param gender
   * @param gpa
   */
   public Student(String name, int age, String gender, String gpa) {
       super();
       this.name = name;
       this.age = age;
       this.gender = gender;
       this.gpa = gpa;
   }

   /*
   * Getters and setters
   */
   public String getName() {
       return name;
   }

   public int getAge() {
       return age;
   }

   public String getGender() {
       return gender;
   }

   public String getGpa() {
       return gpa;
   }

   /**
   * toString() method
   */
   @Override
   public String toString() {
       return "Student " + name + ", " + age + ", " + gender + " has grade " + gpa;

   }

}

/***********************************TestStudent.java**************************************/

import java.util.ArrayList;
import java.util.Scanner;

public class TestStudent {

   public static void main(String[] args) {

       /*
       * array list of student
       */
       ArrayList<Student> students = new ArrayList<>();
       int countM = 0, countF = 0;
       Scanner scan = new Scanner(System.in);
       System.out.print("How many student you want to enter: ");
       int numberOfStudent = scan.nextInt();
       scan.nextLine();
       //loop to enter student info
       for (int i = 1; i <= numberOfStudent; i++) {

           System.out.print("Enter the student " + i + " name: ");
           String name = scan.nextLine();
           System.out.print("Enter the student's age: ");
           int age = scan.nextInt();
           scan.nextLine();
           System.out.print("Enter the student's gender: ");
           String gender = scan.nextLine();
           System.out.print("Enter the student's gpa: ");
           String gpa = scan.nextLine();

           students.add(new Student(name, age, gender, gpa));
       }

       /**
       * loop to print student info
       * loop to count M and F
       */
       for (Student student : students) {

           System.out.println(student.toString());
           if (student.getGender().toUpperCase().charAt(0) == 'M') {

               countM++;
           } else {
               countF++;
           }
       }

       System.out.println("Female to male ratio is: " + countF + ":" + countM);
   }
}
/*************************output***************************/

How many student you want to enter: 3
Enter the student 1 name: John Smith
Enter the student's age: 25
Enter the student's gender: M
Enter the student's gpa: B
Enter the student 2 name: Mary Doe
Enter the student's age: 23
Enter the student's gender: F
Enter the student's gpa: A
Enter the student 3 name: Carry Lynn
Enter the student's age: 24
Enter the student's gender: M
Enter the student's gpa: C
Student John Smith, 25, M has grade B
Student Mary Doe, 23, F has grade A
Student Carry Lynn, 24, M has grade C
Female to male ratio is: 1:2

Thanks a lot, Please let me know if you have any problem,,,,,,,,,,,,,,,,,,,