Answer to Question #267130 in Java | JSP | JSF for Flying Bird

Question

Consider the association between a Country class and a Sportsperson class. Country class is defined with a name and other attributes like size, population, capital, etc, and a list of all the Sportspersons that come from it. A Sportsperson class is defined with a name and other attributes like age, height, weight, match scores (int array), number of matches played etc. Provide appropriate getters/setters and toString() method. In a real-world context, we can infer association between country and sports person that hails from that country. A Country object has-a list of Sportsperson objects that are related to it.Note that a sportsperson object can exist with his own attributes and methods, alone without the association with the country object. Similarly, a country object can exist independently without any association to a sportsperson object. In the main method make objects and print list of sportsman of the country, average scores of all sportsperson and the sportsperson who have highest scores in a match.

Answer 1

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

public class Country {

    private String name;
    private float size;
    private String capital;
    private int population;
    private List<Sportsperson> sportsPersons = new ArrayList<>();

    public Country(String name, float size, String capital, int population) {
        this.name = name;
        this.size = size;
        this.capital = capital;
        this.population = population;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public float getSize() {
        return size;
    }

    public void setSize(float size) {
        this.size = size;
    }

    public String getCapital() {
        return capital;
    }

    public void setCapital(String capital) {
        this.capital = capital;
    }

    public int getPopulation() {
        return population;
    }

    public void setPopulation(int population) {
        this.population = population;
    }

    public List<Sportsperson> getSportsPersons() {
        return sportsPersons;
    }

    public void setSportsPersons(List<Sportsperson> sportsPersons) {
        this.sportsPersons = sportsPersons;
    }

    @Override
    public String toString() {
        return "Country{" +
                "name='" + name + '\'' +
                ", size=" + size +
                ", capital='" + capital + '\'' +
                ", population=" + population +
                ", sportsPersons=" + sportsPersons +
                '}';
    }
}

import java.util.Arrays;
import java.util.Objects;

public class Sportsperson {

    private String name;
    private short age;
    private float weight;
    private float height;
    private int[] matchScores;
    private int matchPlayed = 0;
    private Country country;

    public Sportsperson() {

    }

    public Sportsperson(String name, short age, float weight, float height) {
        this.name = name;
        this.age = age;
        this.weight = weight;
        this.height = height;
    }

    public double getAverageScore() {
        int sum = 0;
        for(int i = 0; i < matchScores.length; i++) {
            sum+=matchScores[i];
        }

        return sum / (double) matchScores.length;
    }

    public int getTheMostEfficientMatch() {
        int highest = 0;

        for(int i = 0; i < matchScores.length; i++) {
            if(highest < matchScores[i]) {
                highest = matchScores[i];
            }
        }

        return highest;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public short getAge() {
        return age;
    }

    public void setAge(short age) {
        this.age = age;
    }

    public float getWeight() {
        return weight;
    }

    public void setWeight(float weight) {
        this.weight = weight;
    }

    public float getHeight() {
        return height;
    }

    public void setHeight(float height) {
        this.height = height;
    }

    public int[] getMatchScores() {
        return matchScores;
    }

    public void setMatchScores(int[] matchScores) {
        this.matchScores = matchScores;
        this.matchPlayed = matchScores.length;
    }

    public int getMatchPlayed() {
        return matchPlayed;
    }

    public Country getCountry() {
        return country;
    }

    public void setCountry(Country country) {
        this.country = country;

        if(!country.getSportsPersons().contains(this)) {
            country.getSportsPersons().add(this);
        }
    }

    @Override
    public String toString() {
        return "Sportsperson{" +
                "name='" + name + '\'' +
                ", age=" + age +
                ", weight=" + weight + " kg" +
                ", height=" + height + " cm" +
                ", matchScores=" + Arrays.toString(matchScores) +
                ", matchPlayed=" + matchPlayed +
                '}';
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        Sportsperson that = (Sportsperson) o;
        return getAge() == that.getAge() && Float.compare(that.getWeight(), getWeight()) == 0 && Float.compare(that.getHeight(), getHeight()) == 0 && Objects.equals(getName(), that.getName());
    }

    @Override
    public int hashCode() {
        return Objects.hash(getName(), getAge(), getWeight(), getHeight());
    }
}

public class Main {
    public static void main(String[] args) {
        Country country = new Country("USA", 9834000f,"Washington", 333449281);

        Sportsperson sportsperson = new Sportsperson("Jayson Tatum", (short) 23, 95, 203);
        sportsperson.setMatchScores(new int[]{23, 54, 13, 4});
        sportsperson.setCountry(country);

        Sportsperson sportsperson1 = new Sportsperson("Jaylen Brown", (short) 25, 101, 198);
        sportsperson1.setMatchScores(new int[]{41, 15, 13});
        sportsperson1.setCountry(country);

        int highestScore = 0;
        Sportsperson highestScorePerson = null;

        for(Sportsperson sp : country.getSportsPersons()) {
            System.out.println(sp);
            System.out.println("Average score: " + sp.getAverageScore());

            if(highestScore < sp.getTheMostEfficientMatch()) {
                highestScore = sp.getTheMostEfficientMatch();
                highestScorePerson = sp;
            }
        }

        System.out.println("The highest scores " + highestScore + " in a match has " + highestScorePerson.getName());
    }
}