School Managament System

Main

package school.managament.system;

import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) {
        Teacher maria = new Teacher(1,"Maria",500);
        Teacher melissa = new Teacher(2,"Melissa",700);
        Teacher john= new Teacher(3,"John",600);

        List<Teacher> teacherList = new ArrayList<>();

        Student ivana = new Student(1,"Ivana",4);
        Student marcus = new Student(2,"Marcus",12);
        Student ivan = new Student(3,"Ivan",5);

        List<Student> studentList = new ArrayList<>();
        studentList.add(ivana);
        studentList.add(marcus);
        studentList.add(ivana);



        School ghs = new School(teacherList,studentList);

        ivana.payFees(5000);
        marcus.payFees(6000);
        System.out.println("GHS has earned $" + ghs.getTotalMoneyEarned());

        System.out.println("------Making GHS SCHOOL SALARY-----");
        maria.recieveSalary(maria.getSalary());
        System.out.println("GHS has has spent for salary to " + maria.getName()
        +" and now has $" + ghs.getTotalMoneyEarned());

        john.recieveSalary(john.getSalary());
        System.out.println("GHS has spent for salary to " + john.getName()
        +" and now has $" + ghs.getTotalMoneyEarned());


        System.out.println(marcus);
        System.out.println(maria);








    }
}

School

package school.managament.system;

import java.util.List;

/**
 * Many teachers, many students.
 * Implements teachers and students using an Arraylist.
 */

public class School {

    private List<Teacher> teachers;
    private List<Student> students;
    private static int totalMoneyEarned;
    private static int totalMoneySpent;

    /**
     * new school object is created.
     * @param teachers list of teachers in the school.
     * @param students list of students in the school.
     */
    public School(List<Teacher> teachers, List<Student> students) {
        this.teachers = teachers;
        this.students = students;
        totalMoneyEarned=0;
        totalMoneySpent=0;
    }

    public List<Teacher> getTeachers() {
        return teachers;
    }

    /**
     *
     * @param teacher the teacher to be added.
     */

    public void addTeacher(Teacher teacher) {
        teachers.add(teacher);
    }



    /**
     *
     * @return the list of students in the school.
     */

    public List<Student> getStudents() {
        return students;
    }

    /**
     * Adds a student to the school.
     * @param student the student to be added.
     */

    public void addStudent(Student student) {
        students.add(student);
    }

    /**
     *
     * @return the total money earnd by the school.
     */

    public int getTotalMoneyEarned() {
        return totalMoneyEarned;
    }

    /**
     * Adds the total money by the school.
     * @param MoneyEarned money that is supposed to be added.
     */


    public static void updateTotalMoneyEarned(int MoneyEarned) {
        totalMoneyEarned += MoneyEarned;
    }

    /**
     *
     * @return the total money spent by the school.
     */

    public  int getTotalMoneySpent() {
        return totalMoneySpent;
    }

    /**
     * update the money that is spent by the school which is the salary given by the school to its teachers.
     * @param MoneySpent the money spent by school.
     */
    public static void updateTotalMoneySpent(int MoneySpent) {
        totalMoneySpent -= MoneySpent;
    }
}

Student

package school.managament.system;

/**
 * This class is responsible for keeping the
 * track of students fees, names, grade & fees
 * paid.
 *
 * */

public class Student {

    private int id;
    private String name;
    private int grade;
    private int feesPaid;
    private int feesTotal;

    /**
     * To create a new student by initializing.
     * Fees for every student is $30,000
     * Fees paid initially is 0
     * @param id id for the student: unique.
     * @param name name of the student.
     * @param grade grade of the student.
     */


    public Student(int id, String name,int grade ){
        this.feesPaid=0;
        this.feesTotal=30000;
        this.id=id;
        this.name=name;
        this.grade=grade;

    }

    //Not going to alter the student's name, student's id.

    /**
     * Used to update the student's grade.
     * @param grade now grade of the student.
     */
    public void setGrade(int grade){
        this.grade=grade;
    }

    /**
     * Keep adding the fees to feesPaid Field.
     * Add the fees to the fees paid.
     * The school is going to receive the funds.
     *
     * @param fees the fees that the students pays.
     */

    public void  payFees(int fees){
        feesPaid+=fees;
        School.updateTotalMoneyEarned(feesPaid);

    }

    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public int getGrade() {
        return grade;
    }

    public int getFeesPaid() {
        return feesPaid;
    }

    public int getFeesTotal() {
        return feesTotal;
    }

    public int getRamainingFees(){
        return feesTotal-feesPaid;
    }

    @Override
    public String toString() {
        return "Student's name : " +name+ " Total fees paid so far $"+ feesPaid;
    }
}

Teacher

package school.managament.system;

/**
 * This class is responsible for keeping the track
 * of teacher's name,id,salary.
 */

public class Teacher {
    private int id;
    private String name;
    private int salary;
    private int salaryEarned = 0;

    /**
     * Creates a new Teacher object.
     * @param id id for the teacher.
     * @param name name of the teacher.
     * @param salary salary of the teacher.
     */

    public Teacher(int id, String name, int salary){

        this.id=id;
        this.name=name;
        this.salary=salary;


    }

    public int getId(){
        return id;
    }

    public String getName(){
        return name;

    }

    public int getSalary(){
        return salary;
    }

    public void setSalary(int salary){
        this.salary=salary;
    }


    /**
     * Adds to salary.
     * Removes from the total money earned by the school.
     * @param salary
     */
    public void recieveSalary(int salary){
        salaryEarned+=salary;
        School.updateTotalMoneySpent(salary);


    }

    @Override
    public String toString() {
        return "Name of the Teacher: " + name + " Total salary earned so far $ " + salaryEarned;
    }
}