do the changes in this program according to the given instructionlike coaches instead of teachers,sports name instead of courses etc,import java.util.*;class CourseManager{//toatl students each section can holdstatic int max_Students;//mapping of each sections w.r.t to courseHashMap<String,ArrayList<Section> > courses ;//constructor for CourseManagerpublic CourseManager(int max){max_Students = max;courses = new HashMap<>();}//class Person which will be used by teacher and students to inherit its propertiesstatic class Person{String name;int age;public Person(String name , int age ){this.name = name;this.age = age;}}//teacher classstatic class Teacher extends Person{int id;public Teacher(int id , String name , int age ){super(name , age );this.id = id;}}//student classstatic class Student extends Person{int id;public Student(int id , String name , int age ){super(name , age );this.id = id;}}//section classstatic class Section{int section;String course ;Teacher instructor;int size ;HashMap<Integer ,Student > students;//constructorpublic Section(int section , String course , Teacher instructor){this.section = section;this.course = course;instructor = this.instructor;students = new HashMap<>();this.size = 0;}//function to add studentspublic void addStudent(int id ,Student s1){if(students.containsKey(id) || size == max_Students){System.out.println("Adding student to Section is not succesful");}else{students.put(id ,s1);size++;System.out.println("Adding student to Section is succesful");}}//function to remove studentpublic void removeStudent(int id ){if(!students.containsKey(id) || size == 0){System.out.println("Removing student from Section is not succesful");}else{students.remove(id);size--;System.out.println("Removing student from Section is succesful");}}}// function of course manager to map section with their coursespublic void addSection(String course , Section s){if(!courses.containsKey(course))courses.put(course,new ArrayList<Section>());courses.get(course).add(s);}//function to display the section w.r.t its coursespublic void DisplaySection(){for(String key : courses.keySet()){System.out.print("Courses with sections : ");for(Section s : courses.get(key)){System.out.print(s.section +" ");}System.out.println();}}public static void main(String args[]){//course manager objectCourseManager cm = new CourseManager(2);//some students objectStudent s1 = new Student(123,"John",15);Student s2 = new Student(456 , "Paul" ,16);Student s3 = new Student(789 , "Chris" ,15);Student s4 = new Student(901 , "Morris" ,17);//some teacher objectTeacher t1 = new Teacher(1234 , "Sophie" , 28);Teacher t2 = new Teacher(1000 , "Alena" , 40);//creating section and mapping them with the coursesSection sec1 = new Section(11,"M54",t1);cm.addSection("M54", sec1);Section sec2 = new Section(22,"C11",t2);cm.addSection("M55", sec2);//adding and removing studentssec1.addStudent(123, s1);sec1.addStudent(456, s2);sec1.addStudent(789, s3);sec1.removeStudent(123);sec2.addStudent(901, s4);//display the section w.r.t its coursescm.DisplaySection();}} Overview:A Sports Club is an organization formed in order to help its members develop interest in certainsports.Usually, members interested in the same sport are divided into groups and an expert trainer isresponsible for training each group.it is required to help the head of a Sports Club for kids implement application tokeep track of the kids (members of the club) and the sports they are interested in.Requirements:After a quick meeting with the head of the sports club, you got the following information:• It is required to store the whole data (all groups of all sports) in one collection.• Each group has a number, a trainer and they are interested in a certain sport (e.g. footballI).In addition, it contains many kids with flexibility of adding and removing kids within a givenlimit for the maximum number of kids who could be in the same group (where this limit isfixed and unified for all groups). Furthermore, there are other attributes (add at least 2attributes from your choice). Group number is unique for each sport.• Each trainer has a unique ID, a name and other attributes (add at least 3 attributes fromyour choice). He/she could train more than one sport.• Each kid has a unique ID, a name and other attributes (add at least 2 attributes from yourchoice).Moreover, you have been informed that the following operations happen frequently:• Forming a new group• Adding a kid to a specified group• Removing a kid from a specified group• Retrieving the average number of kids per group of a certain sport• Displaying all groups in a format similar to the following:sport1: groupNo1 groupNo2 groupNo3 ..sport2: groupNo1 groupNo2 groupNo3 ..where sports and groups are sorted in ascending order• Saving all the groups into a text fileAnalysis:Q1: There are common attributes and methods between kids and trainers. What is the bestchoice for designing and writing the codes of these two classes? Explain your answer.Q2: Draw a simple class diagram showing only relationships between the classes. Implementation:After analysing the given requirements, implement the required application:• with Object Oriented Programming style• following the rules of good programming style (e.g. adding comments, etc.)• using only the material covered in M251 (and its prerequisites)Hints:• For each class, it is required to implement constructors, setters, getters, toString() method,and any other necessary method• If the user tries to do an operation that could violate the state of objects, the operationshould be ignored and the application should display an error message (e.g. adding a kid tothe same group twice, etc.)• Checking equality of any 2 objects should be done via the equals() method• There is a class that will do the main job of keep tracking of the kids as follows:o It has one collection to store the whole data (all groups of all sports)o It has static methods, one for each operation happens frequentlyo For each adding or removing operation, a message should be displayed to the user toexplain the status of the operation (i.e. if it was successful or not)Testing:After implementing the required classes, design and implement a testing class to test them asfollows:• Create at least 7 groups of at least 3 sports and add them to the collection that stores thewhole data then add and remove some kids from them.• Try to violate the state of the objects and show that your code prevents all violations.• Show that the other operations that happen frequently are working fine.At the end, the whole data should be saved into a text file and this file should be savedautomatically inside the folder contains your Java project.

import java.util.*;class Main{ static int max_Students;…

do the changes in this program according to the given instruction like coaches instead of teachers,sports name instead of courses etc, import java.util.*; class CourseManager{ //toatl students each section can hold static int max_Students; //mapping of each sections w.r.t to course HashMap > courses ; //constructor for CourseManager public CourseManager(int max){ max_Students = max; courses = new HashMap<>(); } //class Person which will be used by teacher and students to inherit its properties static class Person{ String name; int age; public Person(String name , int age ) { this.name = name; this.age = age; } } //teacher class static class Teacher extends Person{ int id; public Teacher(int id , String name , int age ) { super(name , age ); this.id = id; } } //student class static class Student extends Person{ int id; public Student(int id , String name , int age ) { super(name , age ); this.id = id; } } //section class static class Section { int section; String course ; Teacher instructor; int size ; HashMap students; //constructor public Section(int section , String course , Teacher instructor) { this.section = section; this.course = course; instructor = this.instructor; students = new HashMap<>(); this.size = 0; } //function to add students public void addStudent(int id ,Student s1) { if(students.containsKey(id) || size == max_Students) { System.out.println("Adding student to Section is not succesful"); } else { students.put(id ,s1); size++; System.out.println("Adding student to Section is succesful"); } } //function to remove student public void removeStudent(int id ) { if(!students.containsKey(id) || size == 0) { System.out.println("Removing student from Section is not succesful"); } else { students.remove(id); size--; System.out.println("Removing student from Section is succesful"); } } } // function of course manager to map section with their courses public void addSection(String course , Section s) { if(!courses.containsKey(course)) courses.put(course,new ArrayList()); courses.get(course).add(s); } //function to display the section w.r.t its courses public void DisplaySection() { for(String key : courses.keySet()) { System.out.print("Courses with sections : "); for(Section s : courses.get(key)) { System.out.print(s.section +" "); } System.out.println(); } } public static void main(String args[]) { //course manager object CourseManager cm = new CourseManager(2); //some students object Student s1 = new Student(123,"John",15); Student s2 = new Student(456 , "Paul" ,16); Student s3 = new Student(789 , "Chris" ,15); Student s4 = new Student(901 , "Morris" ,17); //some teacher object Teacher t1 = new Teacher(1234 , "Sophie" , 28); Teacher t2 = new Teacher(1000 , "Alena" , 40); //creating section and mapping them with the courses Section sec1 = new Section(11,"M54",t1); cm.addSection("M54", sec1); Section sec2 = new Section(22,"C11",t2); cm.addSection("M55", sec2); //adding and removing students sec1.addStudent(123, s1); sec1.addStudent(456, s2); sec1.addStudent(789, s3); sec1.removeStudent(123); sec2.addStudent(901, s4); //display the section w.r.t its courses cm.DisplaySection(); } }